NLE Respiratory Nursing — Upper & Lower Respiratory InfectionsStudy Notes

The upper respiratory tract includes the nasal cavity, paranasal sinuses, pharynx, and larynx. Infections of these structures are extremely common and are a leading reason for ambulatory care visits in the Philippines. While most URTIs are viral and self-limiting, the nursing priority is to distinguish those requiring antimicrobial therapy, prevent unnecessary antibiotic use (to slow resistance development), and identify complications. Maslow's hierarchy frames our approach: after ensuring a patent airway (physiological safety), we address comfort (pain, congestion) and then promote rest and recovery. Most URTIs do not warrant antibiotics; patient education about when antibiotics are truly indicated is a key nursing role in antimicrobial stewardship, aligning with Department of Health (DOH) guidelines on responsible antimicrobial use in the Philippines.

Sinusitis is inflammation of one or more paranasal sinuses (frontal, maxillary, ethmoid, or sphenoid), usually triggered by a preceding viral upper respiratory infection (URTI) that obstructs sinus drainage, or by allergic rhinitis. **The majority of cases are viral**; bacterial superinfection is suspected when symptoms **persist beyond 10 days or worsen after initial improvement**. **Pathophysiology:** Viral infection causes mucosal swelling and increased mucus production, impairing drainage from the sinuses. When sinus ostia (drainage openings) are blocked, negative pressure builds and fluid accumulates, creating an anaerobic environment that favours bacterial overgrowth (most commonly *Streptococcus pneumoniae*, *Haemophilus influenzae*, or *Moraxella catarrhalis*). Secondary bacterial infection turns clear drainage into purulent (thick, discoloured) secretions. **Clinical Manifestations:** Facial pain or pressure (worse on bending forward), purulent nasal discharge (yellow or green), nasal congestion, postnasal drip, headache (often described as a "sinus headache" in the forehead or cheeks), and sometimes fever and malaise. Symptoms typically begin after a cold and may improve after 5–7 days, then worsen (biphasic pattern signalling bacterial superinfection). **Assessment & Diagnostics:** Diagnosis is **mostly clinical**. Imaging (sinus CT) is reserved for recurrent/chronic cases or suspicion of complications. The key point: **if a patient has clear drainage and symptoms resolve within 10 days, it is almost certainly viral and does not require antibiotics**. A **purulent nasal discharge persisting beyond 10 days or accompanied by fever and worsening pain suggests bacterial sinusitis**. **Management Aligned with Philippine DOH Guidelines:** - **Viral sinusitis (majority of cases):** Supportive care is the cornerstone. Saline nasal irrigation (using a neti pot or saline spray) twice daily relieves congestion, promotes drainage, and removes irritants. Humid air (steam inhalation, cool-mist humidifier) eases nasal passages. Encourage fluids (water, warm tea) to thin secretions. Analgesics (paracetamol, ibuprofen) manage pain and fever. Most cases resolve in 7–10 days without antibiotics. - **Bacterial sinusitis (persistent/worsening symptoms):** **Amoxicillin** is the first-line antibiotic (500 mg three times daily for 10 days, or as prescribed). If the patient is penicillin-allergic, a **macrolide** (azithromycin) or **fluoroquinolone** (levofloxacin) is used. Emphasise completing the full course even after symptoms resolve. **Nursing Interventions & Patient Education (Maslow's Framework):** - **Physiological:** Assess airway patency; use saline irrigation or suction if needed. Monitor temperature and vital signs. - **Comfort:** Apply warm compresses to the sinuses (forehead/cheeks) for 15–20 minutes to increase blood flow and pain relief. Teach this simple measure as a non-pharmacological strategy. - **Education & Prevention:** Teach hand hygiene to reduce transmission during a cold (prevents URTIs from progressing to sinusitis). Advise avoiding smoke and irritants, maintaining humidity, and staying hydrated. Emphasise that antibiotics will not be prescribed for viral sinusitis, reducing patient anxiety and promoting antimicrobial stewardship. - **Compliance:** If antibiotics are prescribed, stress taking them exactly as directed and completing the course to prevent resistance. **Complications (Rare but Important):** Untreated bacterial sinusitis can spread to adjacent structures: **cavernous sinus thrombosis** (life-threatening), **meningitis**, **brain abscess**, or **osteomyelitis** of the skull. Teach patients to seek care immediately if they develop severe headache, high fever, confusion, neck stiffness, or weakness.

Pharyngitis ("sore throat") is inflammation of the pharynx and is one of the most common acute illnesses. **The vast majority—80–90%—are viral** and resolve spontaneously without treatment. However, **the critical subset to identify is Group A beta-haemolytic streptococcus (GABHS, or "strep throat")** because **untreated cases can lead to rheumatic fever and acute glomerulonephritis**, both serious complications that can cause permanent cardiac and renal damage. This is a **high-yield NLE topic** because the prevention strategy—**completing the full antibiotic course**—is simple but absolutely essential. **Pathophysiology:** Viral pharyngitis results from infection by rhinoviruses, coronaviruses, parainfluenza, influenza, or enteroviruses. The inflammatory response causes mucosal redness, oedema, and often exudate (whitish coating). **Bacterial (streptococcal) pharyngitis** arises from GABHS colonisation of the pharynx, triggering acute inflammation and exudate. **Clinical Manifestations — How to Distinguish Viral from Strep:** *Strep pharyngitis (GABHS) classic clues:* - **Sudden onset** of severe sore throat (often overnight), fever (usually >38.5°C), **tonsillar erythema with exudate** (white/yellow coating on tonsils), and **tender anterior cervical lymph nodes** (sometimes described as "brawny" or enlarged). - **Absence of cough** — this is key; viral pharyngitis often includes a cough (because viruses infect the entire respiratory tract), whereas strep is isolated to the throat. - Headache, malaise, myalgia; nausea and abdominal pain may occur. - Incubation period: 2–5 days; peaks in school-aged children and adolescents. *Viral pharyngitis:* - **Gradual onset**, mild-to-moderate sore throat, low-grade or no fever, viral prodrome (rhinorrhea, cough, sneezing). - Throat may be red but exudate is absent or minimal; cervical nodes are less prominent or absent. - Cough is often present (unlike strep). - Self-limited, resolving in 3–7 days. **Diagnostics:** - **Rapid streptococcal antigen test (RAT)** — quick (10 min), bedside, identifies GABHS antigen. If positive, confirms strep and antibiotics are started; if negative but high clinical suspicion, a **throat culture** is sent for confirmation (takes 24–48 hours). - **Throat culture** — gold standard; positive result confirms GABHS. Obtain by swabbing both tonsils and the posterior pharynx before starting antibiotics if possible (to avoid suppressing growth). - **Full blood count (FBC)** — may show lymphocytosis in viral cases, but is not routinely needed. **Management:** *Viral pharyngitis (symptomatic/supportive care):* - **Rest** — encourage 1–2 days off from work/school while acutely ill. - **Fluids** — water, warm tea, warm salt-water gargles (1/2 teaspoon salt in 240 mL warm water), soothing lozenges, or popsicles. - **Analgesics/antipyretics** — paracetamol (500 mg–1 g four times daily) or ibuprofen (200–400 mg three times daily) for pain and fever. Acetylsalicylic acid (aspirin) is avoided in children due to risk of Reye's syndrome. - **Local comfort** — gargles, lozenges, and avoiding irritants (smoke, very hot foods). - Most cases resolve in 3–7 days without antibiotics. *Strep pharyngitis (GABHS):* - **First-line: Penicillin V (oral)** — 500 mg four times daily for 10 days (total of 40 tablets). This is the standard because GABHS remains universally susceptible to penicillin, it is affordable in the Philippines, and it is safe in pregnancy/lactation. - **Alternatives:** If penicillin-allergy: - **Azithromycin (macrolide)** — 500 mg on day 1, then 250 mg daily for 4 more days (5-day course). Caution: increasing macrolide resistance in some areas; GI upset is common. - **Cephalosporin** (e.g., cephalexin 500 mg four times daily for 10 days) — safe in patients with non-IgE-mediated penicillin allergy (like rash with amoxicillin) but **avoided if history of IgE-mediated anaphylaxis** to penicillin due to 1–2% cross-reactivity. - **Pain management:** Paracetamol or ibuprofen plus antibiotics; continue for comfort even after fever resolves. **The Critical Nursing Role — Prevention of Sequelae:** This is a **gold-standard NLE teaching point.** The **single most important intervention to prevent rheumatic fever** is ensuring the patient **completes the full 10-day antibiotic course**, even after the sore throat improves (usually by day 2–3). Many patients stop early once they feel better, which leaves residual streptococci and allows immune-mediated sequelae (post-streptococcal acute glomerulonephritis and acute rheumatic fever) to develop. **Acute rheumatic fever can cause permanent cardiac damage (valvular stenosis, regurgitation)** and is still a leading cause of acquired heart disease in children in resource-limited settings, including the Philippines. Nursing interventions: 1. **Emphasise the importance of the full 10-day course.** Use teach-back method: "Tell me why you need to finish all 10 days of antibiotics even though your throat feels better." The answer should be: "To kill all the strep bacteria and prevent serious complications like rheumatic fever." 2. **Facilitate adherence:** If cost is a barrier, connect the family with local health programs or DOH subsidies. If the taste is a concern (especially in children), suggest taking it with food or juice. Set a daily alarm or calendar reminder. 3. **Advise when to return:** Worsening throat pain, fever after 48 hours of antibiotics, difficulty swallowing/drooling (rare sign of retropharyngeal abscess), or signs of complications (joint pain, chest pain, rash) warrant re-evaluation. 4. **Educate about transmission:** Strep spreads via respiratory droplets; the patient should stay home for the first 24 hours of antibiotics (when most infectious), cover their mouth when coughing/sneezing, and avoid sharing food/utensils. **Complications (If Untreated):** - **Acute Rheumatic Fever (ARF)** — develops 2–3 weeks after infection; presents with polyarthritis (often knee, ankle, wrist), carditis (heart murmur, chest pain, dyspnoea), chorea (involuntary movements), subcutaneous nodules, or erythema marginatum (rash). Can cause permanent valvular heart disease. - **Post-Streptococcal Acute Glomerulonephritis (PSAGN)** — develops 1–2 weeks post-infection; presents with haematuria, hypertension, oedema, and reduced GFR. Usually self-limited in children but requires monitoring. - **Suppurative complications (rare):** Abscess, mastoiditis, scarlet fever. **Prevention:** No vaccine exists for GABHS. **Primary prevention is hand hygiene and respiratory etiquette.** **Secondary prevention (preventing complications in those with strep) is completing the antibiotic course.** **Tertiary prevention (preventing recurrent strep in those with a history of ARF) is long-term penicillin prophylaxis** (e.g., penicillin V 250 mg twice daily or benzathine penicillin G monthly injection), which is beyond this chapter but important to know exists.

Influenza is an acute systemic viral illness caused by **influenza A or B viruses**, characterized by **abrupt onset of high fever (often >38.5°C), severe myalgia (muscle aches), headache, malaise, dry cough, and profound fatigue**. It is clinically distinct from the common cold because of its **sudden onset and systemic symptoms**; patients often report feeling acutely ill ("knocked down") rather than just congested. Influenza is a **significant public health concern in the Philippines**, particularly during the rainy/cooler months (July–October and December–February, though circulation is year-round in tropical climates). **Epidemiology & Transmission:** - Spread via **respiratory droplets** (5–6 feet range) when an infected person coughs, sneezes, or talks; also via direct contact with contaminated fomites. - Incubation period: 1–4 days (usually 2 days). - Highly contagious: people are most infectious **24 hours before symptom onset through 5–7 days after** (longer in young children and immunocompromised persons). - Annual vaccination is the cornerstone of prevention, especially for high-risk groups (elderly, pregnant women, chronic disease, healthcare workers). **Pathophysiology:** - Viral infection of the respiratory epithelium triggers direct cytotoxic injury and inflammatory response (release of cytokines, interferon). This causes mucosal oedema, mucus production, and tissue damage, explaining the dry cough and throat pain. - Systemic symptoms (fever, myalgia, headache) arise from cytokine release (especially interleukin-1 and tumor necrosis factor-alpha). - In uncomplicated influenza, the infection is usually self-limited, lasting 3–7 days, though fatigue and cough can persist for weeks. **Clinical Manifestations:** - **Classic triad:** high fever (sudden), myalgia, dry cough. - Additional: headache, sore throat, malaise, anorexia, rhinitis (runny nose), and sometimes nausea/vomiting. - **Distinguishing feature:** abrupt onset and systemic "feel-bad" symptoms; patients may say, "I felt fine this morning and now I am in bed." This contrasts with the cold, which is gradual and mainly nasal. - Recovery: fever typically breaks after 3–5 days; cough and fatigue can linger 1–2 weeks. **Complications (Most Important):** - **Secondary bacterial pneumonia** — the most common serious complication; occurs when the damaged respiratory epithelium is colonized by bacteria (commonly *Streptococcus pneumoniae*, *Staphylococcus aureus* including MRSA, or *Haemophilus influenzae*). - **Primary viral pneumonia** — can occur even without secondary bacterial infection, especially in severe cases. - **Myocarditis, pericarditis, encephalitis, Guillain-Barré syndrome** — rare but serious. - **Death** — uncommon in healthy adults but significant in the **very elderly, pregnant women, and those with chronic disease** (diabetes, cardiovascular disease, COPD, asthma, immunosuppression). This is crucial for the Philippine context where many patients have limited access to ICU care. **Diagnostics:** - **Rapid influenza diagnostic tests (RIDTs)** — detect viral antigen; positive result is specific but sensitivity is 50–70%, meaning a negative test does not exclude influenza (especially late in illness when antigen shedding is low). Tests are most useful in the first 3–4 days of illness. - **RT-PCR** — gold standard; more sensitive and specific; takes 24–48 hours. - **Chest X-ray** — normal in uncomplicated influenza; infiltrates suggest pneumonia. - **Clinical diagnosis** — in a patient with classic presentation (abrupt fever, myalgia, cough) during influenza season, a clinical diagnosis is often made without testing, especially if testing is not available or is costly. **Management:** *Antivirals (Most Effective Within 48 Hours):* - **Oseltamivir (Tamiflu)** — the most commonly used antiviral in the Philippines; **75 mg orally twice daily for 5 days**. Reduces fever duration by ~1 day and decreases risk of complications (pneumonia) in high-risk groups if started **within 48 hours of symptom onset**. Less effective (but still offered) after 48 hours. - **Mechanism:** inhibits neuraminidase, preventing viral release from infected cells. - **Adverse effects:** nausea, vomiting, abdominal pain; neuropsychiatric effects (delirium, self-harm) are rare but reported, particularly in children in Japan and need to be monitored. - **Use in high-risk groups:** Oseltamivir is recommended for **pregnant women, elderly, those with chronic disease, and those with severe influenza** even outside the 48-hour window; benefits continue to accrue. - **Note:** In the Philippines, oseltamivir may not always be available or affordable in primary care settings; supportive care is the mainstay for most patients. *Supportive Care (Mainstay for Most):* - **Rest** — 1–2 days off from work/school; avoid contact with others (RESPIRATORY/DROPLET PRECAUTIONS). - **Fluids** — water, warm fluids (broth, tea), and electrolyte solutions; hydration is essential to prevent dehydration from fever and to thin respiratory secretions. - **Antipyretics/analgesics** — paracetamol (500 mg–1 g four times daily) or ibuprofen (200–400 mg three times daily) for fever and myalgia. Do NOT use aspirin in children (risk of Reye's syndrome) or in those taking anticoagulants without caution. - **Cough management:** Supportive; most coughs resolve without treatment. Avoid cough suppressants (antitussives) unless cough is severely disrupting sleep; they may trap secretions. Consider humidification. - **Avoid antibiotics unless bacterial superinfection is suspected** (rising fever after day 3–4, productive cough with purulent sputum, infiltrate on CXR). **Prevention (THE Priority in Philippine Public Health):** 1. **Annual influenza vaccination** — This is the **single best prevention strategy** and is the cornerstone of the DOH's influenza prevention program. Recommended for **all persons ≥6 months old**, with special emphasis on: pregnant women, elderly (≥60 years), healthcare workers, persons with chronic disease, and other high-risk groups. Vaccines are updated annually to match circulating strains. In the Philippines, the influenza vaccine is part of the expanded program on immunization (EPI) for high-risk groups and healthcare workers. 2. **Respiratory etiquette (Cough Etiquette):** - Cover mouth and nose with a tissue or the inside of your elbow (NOT your hands) when coughing or sneezing. - Dispose of tissues in a trash bin immediately. - Wash hands after coughing/sneezing. - Avoid touching face with contaminated hands. 3. **Hand Hygiene:** Wash hands frequently with soap and water, especially after coughing/sneezing, before eating, and after using the toilet. Alcohol-based hand sanitizers are effective if soap and water are unavailable. 4. **Respiratory Precautions:** Maintain at least 1–2 meters distance from persons with respiratory symptoms; avoid crowded spaces during influenza season. 5. **Healthcare Setting Precautions:** **Droplet precautions** (surgical mask for patients) for all patients with suspected/confirmed influenza; healthcare workers use a surgical mask (N95 if aerosol-generating procedures). **Nursing Interventions (Maslow's Framework & NANDA-I Nursing Diagnoses):** 1. **Ineffective airway clearance / Ineffective breathing pattern** (if respiratory involvement): - Position in semi-Fowler's or high-Fowler's to ease breathing. - Encourage deep breathing and coughing. - Administer humidified oxygen if SpO2 <94% or respiratory distress. - Suction airway as needed if unable to clear secretions. 2. **Fever / Hyperthermia** (related to viral infection): - Monitor temperature every 4 hours or as needed. - Encourage light clothing and bed linens; avoid overheating. - Provide tepid sponging if fever is very high and patient is uncomfortable (though most evidence supports antipyretics alone). - Administer antipyretics on schedule (not p.r.n. only); alternate paracetamol and ibuprofen if needed for sustained fever (use different drugs to avoid overdose). - Monitor for febrile seizures in young children with rapid temperature rise. 3. **Acute pain** (myalgia, headache, sore throat): - Assess pain using pain scale; give analgesics on schedule. - Encourage rest and reduce stimulation (quiet environment, dim lights, soft voices). - Non-pharmacological: warm compress on muscles, gentle massage, positioning with pillows for support. 4. **Fluid volume deficit** (related to fever and anorexia): - Monitor intake and output; assess skin turgor, mucous membrane moisture, and urine colour. - Encourage frequent small sips of fluids (water, warm tea, broth, electrolyte solutions). - If unable to take oral fluids or severely dehydrated, IV hydration may be needed (hospital setting). - Monitor electrolytes (sodium, potassium) if diarrhoea/vomiting occur. 5. **Activity intolerance / Fatigue** (related to viral infection and systemic inflammation): - Restrict activities during acute illness; plan care to minimize interruptions and conserve energy. - Provide assistance with activities of daily living (ADLs) as needed. - Gradually resume activities as fever resolves; reassure that fatigue is normal and will improve over 1–2 weeks. - Advise not returning to work/school until fever-free without antipyretics for 24 hours (to reduce transmission and allow recovery). 6. **Infection control (Transmission) / Risk of infection to others**: - **Droplet precautions:** Patient wears a surgical mask when outside their room/home; place tissues and used materials in a separate trash bin. - Teach hand hygiene: wash hands after coughing/sneezing, before eating, after using toilet. - Isolate from vulnerable others (elderly, pregnant women, immunocompromised) if possible. - Educate household members about transmission and precautions. **Patient Education (Critical for Flu Prevention in Community Settings):** 1. **Emphasise annual vaccination** — it is safe, effective, and free or low-cost in Philippines for eligible groups. Dispel myths about the vaccine causing the flu (it does not; some people develop mild symptoms after vaccination as the immune system responds, but this is not the flu). 2. **Explain oseltamivir (if prescribed):** Take it twice daily for 5 days even if you feel better after 2–3 days; it reduces fever duration and risk of pneumonia, especially if you are elderly or have chronic disease. 3. **Teach cough etiquette:** Cover your cough with a tissue or your elbow (not your hands), wash hands frequently, and stay home for the first few days of illness. 4. **Manage fever:** Take paracetamol or ibuprofen on schedule for comfort; staying hydrated and resting will speed recovery. 5. **Know when to return:** Seek care immediately if you develop shortness of breath, chest pain, persistent high fever after 3–4 days of treatment, or signs of pneumonia (see pneumonia section). **Special Populations in Philippine Context:** - **Pregnant women:** At increased risk of severe influenza and complications; should receive the inactivated vaccine (safe in pregnancy) and oseltamivir if infected. The benefit of antiviral therapy outweighs theoretical risks. - **Elderly and chronically ill:** High risk of pneumonia and death; vaccination and early antiviral treatment are priorities. - **Healthcare workers:** Must be vaccinated annually and adhere to infection control to prevent nosocomial transmission. - **Children:** Vaccine dosing is age-dependent (2 doses 4 weeks apart if <9 years old and first-time vaccine); oseltamivir dosing is weight-based; avoid aspirin (Reye's syndrome risk).

Acute bronchitis is inflammation of the **bronchi (the large airways that branch from the trachea into the lungs)**. It is usually **viral and self-limiting**, following an upper respiratory infection or influenza. It is extremely common in primary care and accounts for a significant portion of inappropriate antibiotic prescriptions—a key focus of antimicrobial stewardship in the Philippines. **Pathophysiology:** - Viral infection (rhinoviruses, coronaviruses, influenza, parainfluenza, RSV) damages the ciliated epithelium lining the bronchi, impairing mucociliary clearance. The damaged epithelium swells, produces excess mucus, and becomes sensitive to irritation. - The inflammatory response triggers bronchial smooth muscle contraction and mucus-secreting cell hyperplasia, causing a **persistent cough**. - In most cases, the infection is self-limited; the epithelium regenerates over 3–4 weeks, and the cough gradually resolves. **Clinical Manifestations:** - **Hallmark: a cough lasting 2–3 weeks**, initially **dry (non-productive)** and irritating, then becoming **productive (with sputum)**. Sputum colour is often **clear or whitish-yellow** (mucoid or mucopurulent) and does not indicate bacterial infection. - Associated symptoms: **mild-to-low-grade fever** (if any), rhinitis, sore throat, fatigue, and chest discomfort or soreness from coughing. - **Wheezing** may occur due to airway inflammation and bronchial hyperreactivity, especially in those with asthma or COPD. - Symptoms of the preceding URTI (congestion, sneezing) usually improve first; the cough lags behind. **Distinguishing Acute Bronchitis from Pneumonia (Critical for NLE):** | Feature | Acute Bronchitis | Pneumonia | |---------|-----------------|----------| | Fever | Mild/none | High (>38.5°C) | | Cough | Productive; non-purulent sputum | Productive; may be purulent or rust-coloured | | Chest auscultation | Wheezes, normal breath sounds | Crackles, bronchial breath sounds, dullness to percussion | | CXR | Normal | Infiltrate/consolidation | | Respiratory distress | Absent or mild | Present (tachypnoea, dyspnoea, use of accessory muscles) | | Systemic symptoms | Mild (fatigue) | Pronounced (fever, myalgia, malaise) | | WBC count | Normal or mildly elevated | Elevated (>11,000) | **Diagnostics:** - **Clinical diagnosis** — based on presentation; no test is needed for uncomplicated acute bronchitis. - **Chest X-ray** — **normal in uncomplicated acute bronchitis**. If infiltrate is present, pneumonia is suspected and further workup is warranted. - **Sputum culture** — NOT routinely indicated because acute bronchitis is viral and culture does not change management. - **CBC** — NOT routinely needed; if obtained, WBC may be normal or mildly elevated. **Why Antibiotics Are NOT Indicated in Acute Bronchitis (Key NLE Concept):** This is a **cornerstone of Philippine DOH antimicrobial stewardship.** Multiple systematic reviews and guidelines (including IDSA, BTS, and WHO) confirm that: 1. **Acute bronchitis is viral in >90% of cases**; even when bacteria are isolated, they are often **colonisers, not pathogens**. 2. **Antibiotics do not shorten the cough duration**, do not prevent pneumonia, and do not reduce symptom severity in most patients. 3. **Overuse of antibiotics drives resistance**; unnecessary use in acute bronchitis is a major driver of community-acquired resistance, which is a significant public health threat in the Philippines. 4. **Rare exceptions:** A patient with underlying COPD or asthma with acute bronchitis may have a bacterial exacerbation and may benefit from antibiotics; this is individualised decision-making and should involve evaluation for concurrent conditions. **Management (Supportive Care — The Standard):** *First-line interventions:* 1. **Rest** — 1–2 days off from strenuous activities; allows immune system to focus on fighting infection. 2. **Fluids** — water, warm fluids (tea, broth), electrolyte solutions. Hydration thins secretions, easing cough and preventing dehydration. Advise **2–3 liters per day** unless contraindicated (heart failure, renal disease). 3. **Humidity** — a cool-mist humidifier or steam inhalation (from a bowl of hot water with a towel over the head) eases airway irritation and cough. Warm, humid air is soothing and helps loosen secretions. 4. **Cough management:** - **Cough lozenges or hard candies** containing menthol or honey provide local anesthesia and may ease the tickle. - **Honey** — has some antimicrobial and anti-inflammatory properties; a teaspoon of honey (not for children <1 year due to botulism risk) or warm honey-lemon tea can soothe the throat and cough. Evidence is modest but harm is minimal. - **Avoid cough suppressants (antitussives like dextromethorphan or codeine)** unless the cough is severely disrupting sleep or daily function. Suppressants may trap secretions and delay epithelial healing; supportive measures are preferred. - **Avoid smoking and secondhand smoke**; irritation delays recovery. 5. **Analgesics for chest discomfort:** Paracetamol or ibuprofen for muscle soreness from coughing. *Do NOT give antibiotics* unless there is **strong clinical evidence of bacterial infection** (i.e., **high fever, purulent sputum, signs of pneumonia on exam/CXR**). **Course and Expected Recovery:** - Acute phase (fever, URTI symptoms): 3–7 days. - Cough: 2–3 weeks (can persist up to 6 weeks in some). - **Most patients recover completely without residual effects.** **Nursing Interventions (NANDA-I & Maslow):** 1. **Ineffective airway clearance** (related to excess mucus production and inflammatory response): - Assess breath sounds, respiratory rate, and ability to clear secretions. - Encourage deep breathing and coughing to mobilize secretions; position upright/semi-Fowler's to ease cough. - Humidify air using a humidifier or steam; this is a first-line comfort measure. - Suction airway if patient is unable to cough effectively (rare in acute bronchitis; more common if bedridden/hospitalized). - Monitor for signs of deterioration (increasing RR, dyspnoea, cyanosis) that would suggest pneumonia. 2. **Acute pain** (chest discomfort from coughing): - Assess and monitor pain using a pain scale. - Give analgesics (paracetamol/ibuprofen) on a schedule (not just when pain is severe). - Non-pharmacological: teach splinting (hugging a pillow against the chest when coughing to reduce chest wall movement and pain), position changes, and rest. 3. **Ineffective coping / Activity intolerance** (related to persistent cough and fatigue): - Acknowledge that the cough is frustrating and can be exhausting; normalise the 2–3 week duration so the patient does not think something is wrong. - Educate that cough resolves gradually; alarm symptoms (shortness of breath, high fever, coughing up blood, severe chest pain) warrant re-evaluation. - Encourage gradual return to activities as tolerated; avoid overexertion early. 4. **Risk of transmission** (to others with respiratory precautions): - Teach respiratory/cough etiquette: cover mouth with a tissue or elbow when coughing, dispose of tissues, wash hands. - Advise staying home from work/school for the first 3–5 days if fever is present; after fever resolves, the cough is not a reason to exclude from activities (the cough is bothersome but not a major transmission risk once acute illness is over). **Patient Education (Very Important for Reducing Inappropriate Antibiotic Use):** This is a golden opportunity for **health promotion and disease prevention** aligned with DOH antimicrobial stewardship. Teach: 1. **Antibiotics do not help acute bronchitis because it is viral.** Explain: "Antibiotics kill bacteria, not viruses. Your cough is caused by a virus, so antibiotics will not make it go away faster. Overusing antibiotics creates resistant bacteria that are harder to treat. We reserve antibiotics for bacterial infections." 2. **The cough will take 2–3 weeks.** Many patients expect a quick fix; setting realistic expectations prevents unnecessary frustration and pressure on healthcare providers to prescribe antibiotics. 3. **Fluids, humidity, and rest are the mainstay.** Teach a simple home regimen: drink 2–3 liters daily, use a humidifier, rest well, and take paracetamol for aches. These cost little and are effective. 4. **Honey-lemon tea or lozenges** can soothe throat and ease cough; no harm and may help with comfort. 5. **Warning signs warranting return:** High fever (>39°C) persisting >3 days, shortness of breath, coughing up blood, severe chest pain, or signs of pneumonia (rapid breathing, severe fatigue). Explain: "If you develop any of these, come back because it might be pneumonia, which does need antibiotics." 6. **Smoking and secondhand smoke delay recovery.** If the patient or household members smoke, emphasise cessation as part of bronchitis recovery and long-term health. **Special Populations:** - **COPD/asthma patients:** An acute bronchitis episode can trigger bronchospasm and airway hyperreactivity. These patients may develop transient wheezing and may benefit from bronchodilators (albuterol inhaler). Monitor closely for pneumonia superinfection (higher risk in COPD). - **Elderly patients:** May develop pneumonia more easily; close monitoring and a lower threshold for CXR if symptoms persist or worsen is appropriate. - **Immunocompromised:** Higher risk of secondary bacterial infection or opportunistic infections; may warrant CXR and sometimes cultures. **Comparison: Acute Bronchitis vs. Chronic Bronchitis (for context):** - **Acute bronchitis:** Recent onset (usually following URTI), viral, self-limited, no prior history of chronic cough. - **Chronic bronchitis:** Part of COPD, defined as a persistent (chronic) productive cough on most days for ≥3 months in a year for ≥2 consecutive years; often associated with smoking. Acute exacerbations of chronic bronchitis may warrant antibiotics (due to higher risk of bacterial superinfection) and are distinct from acute bronchitis in a previously healthy person.

Pneumonia is an infection of the **lung parenchyma (alveoli and surrounding tissue)**, causing **inflammation and consolidation with exudative filling of alveoli**. It is a major cause of morbidity and mortality in the Philippines and is a frequent NLE examination topic. Unlike acute bronchitis (which affects the bronchi and is usually viral), pneumonia affects the distal lung units and causes **hypoxaemia due to impaired gas exchange**. Pneumonia ranges from mild (community-acquired, outpatient-manageable) to severe (hospital-acquired, life-threatening). **Pathophysiology:** 1. **Inhalation of pathogenic organisms** (or aspiration of oral secretions containing bacteria) into the distal respiratory tract. 2. **Deficits in host defences** (impaired cough reflex, mucociliary clearance, or immune function) allow organisms to lodge and multiply in the alveoli. 3. **Inflammatory response:** The body's immune system recognizes the pathogen and triggers an inflammatory cascade. **Pro-inflammatory cytokines, complement activation, and white blood cell recruitment** cause **alveolar wall oedema, exudate formation, and consolidation**. 4. **Consolidation:** Alveoli fill with **inflammatory exudate (fluid, fibrin, white blood cells, red blood cells, and cellular debris)**, replacing air. This **reduces the surface area for gas exchange**, causing **hypoxaemia (low oxygen in blood)** and **ventilation-perfusion (V/Q) mismatch**. 5. **Clinical manifestations:** The body attempts to improve oxygenation by increasing respiratory rate (tachypnoea); patients may develop dyspnoea, cyanosis (in severe cases), and hypoxaemia (SpO2 <94%). **Classification:** **1. Community-Acquired Pneumonia (CAP) — Most Common** - Develops outside hospital or within 48 hours of hospital admission in a patient who has not been hospitalized in the past 90 days. - **Most common bacterial cause:** **Streptococcus pneumoniae** (accounts for ~40–50% of bacterial CAP) — presents with **abrupt onset, high fever, productive cough with rust-coloured sputum, and pleuritic chest pain**. - **Other bacteria:** *Haemophilus influenzae*, *Moraxella catarrhalis*, *Staphylococcus aureus* (increasing, especially MRSA in some regions). - **Viral causes:** Influenza virus, respiratory syncytial virus (RSV), parainfluenza, coronavirus, rhinovirus (often preceding bacterial superinfection). - **Atypical organisms:** *Mycoplasma pneumoniae*, *Legionella pneumophila*, *Chlamydia pneumoniae* — present with atypical features (gradual onset, systemic symptoms, dry cough, extrapulmonary manifestations). - **Most common setting in Philippines:** Outpatient/community; managed with oral antibiotics in primary health centers. **2. Hospital-Acquired (Nosocomial) Pneumonia — Pneumonia Acquired >48 Hours After Hospitalization** - Often involves **resistant Gram-negative organisms** (*Pseudomonas aeruginosa*, *Acinetobacter*, *Klebsiella*) and **Staphylococcus aureus** (including MRSA). - Risk factors: mechanical ventilation, prolonged intubation, supine positioning, aspiration of gastric contents, immunosuppression, severity of underlying illness. - **Higher mortality than CAP** due to resistant pathogens and comorbidities. - Management: requires **broad-spectrum antibiotics** (often combination therapy) pending culture results; narrowed based on sensitivities. - Not a focus of this chapter (falls under critical care); mentioned for distinction. **3. Ventilator-Associated Pneumonia (VAP)** - A subset of hospital-acquired pneumonia; develops in mechanically ventilated patients. - High mortality; requires ICU-level care. - Prevention focuses on: **head-of-bed elevation ≥30 degrees, oral care, subglottic secretion drainage, spontaneous breathing trials to facilitate early extubation**. - Not detailed here but important for nurses in critical care settings. **4. Aspiration Pneumonia** - Results from inhalation of **gastric contents or oropharyngeal secretions** rather than a typical pathogenic organism. - **Risk factors:** **Impaired swallowing, decreased level of consciousness (stroke, seizures, intoxication, head injury), NG feeding, gastric reflux, achalasia**. - Often involves **anaerobic bacteria** from the oral cavity; may progress to lung abscess. - **Classic presentation:** Fever, cough, and infiltrate in the **dependent lung zones** (right lower lobe if upright; posterior if recumbent). - **Prevention is key:** Assess swallowing before oral intake post-stroke; use proper NG feeding technique; elevate head of bed; maintain oral hygiene; monitor for silent aspiration in high-risk patients. **Clinical Manifestations — Typical Presentation:** *Classic pneumococcal (bacterial CAP):* - **Abrupt onset** (over hours to 1–2 days): high fever (38.5–40°C), rigors (shaking chills). - **Productive cough** with **rust-coloured sputum** (pathognomonic for pneumococcus; the rust colour is from haemorrhagic exudate). - **Pleuritic chest pain** — sharp pain worse on deep breathing or coughing (due to pleural inflammation). - **Dyspnoea** and **tachypnoea** (RR >20/min, often >24/min in severe cases). - **Systemic symptoms:** Fever, chills, malaise, myalgia, headache, anorexia. - **Elderly patients (Critical NLE Point):** Present **atypically**. Instead of classic fever/cough, the elderly may present with **confusion, delirium, lethargy, or a fall**. **Fever may be absent or blunted.** This is a very common NLE distractor and a critical assessment skill: do not miss pneumonia in an elderly patient presenting with altered mental status. *Atypical presentation (atypical organisms like Mycoplasma, Legionella, Chlamydia):* - **Gradual onset** (over 3–5 days). - **Dry cough** (non-productive initially, may become productive later). - **Systemic symptoms may predominate:** Fever, headache, myalgia, malaise; cough is less prominent. - **Extrapulmonary manifestations:** Rash (Mycoplasma), diarrhoea/hepatitis (Legionella), pharyngitis (Chlamydia). - **Often diagnosed in teenagers/young adults.** **Physical Examination Findings in Pneumonia (Consolidation):** When an area of the lung is consolidated (filled with exudate), it transmits sound differently than air-filled lung: - **Crackles (rales)** — fine, short crackling sounds at the end of inspiration; sound like "Rice Krispies" in the chest. Represent fluid/secretions in small airways. Very common in pneumonia but also seen in pulmonary edema. - **Bronchial breath sounds** — louder, harsher breathing sounds (normally heard over the trachea); when heard over peripheral lung, indicate consolidation (air-filled lung is quieter). Described as "tubular" or "blowing" in character. - **Dullness to percussion** — consolidated lung does not transmit resonance as well as air-filled lung; percussion elicits a dull (not hollow) sound over the affected area. - **Increased tactile fremitus** — vibrations from speech transmission through consolidated tissue feel stronger (more vibrations) to the hand placed on the chest. - **Positive egophony** — when the patient says "E," it sounds like "A" transmitted through consolidated lung (due to preferential transmission of high-frequency sound). **Diagnostic Approach (High-Yield NLE Content):** **1. Chest X-Ray (Gold Standard):** - **Shows infiltrate/consolidation:** An area of increased density (whiteness) on the film, representing the consolidation and exudate. - **Lobar pattern:** Classic pneumococcal pneumonia shows **consolidation confined to a single lobe** (lobar pneumonia). - **Bronchopneumonia pattern:** More diffuse, patchy infiltrates throughout the lungs (associated with viral or aspiration pneumonia). - **Pleural effusion:** Fluid between the lung and chest wall; seen as a **blunted costophrenic angle** (the sharp angle where the lung meets the diaphragm becomes rounded). - **Cavitation:** Areas of lung tissue necrosis leaving a cavity; suggests abscess (can develop from inadequate antibiotic therapy or aspiration pneumonia). - **CRITICAL:** A patient with **clinical signs of pneumonia but a normal CXR on initial presentation** may have **early pneumonia (infiltrate not yet visible on X-ray)** or **atypical infection**. Repeat CXR in 48 hours or use CT if the clinical suspicion is high. **2. Sputum Gram Stain and Culture:** - **Collect sputum before starting antibiotics** (if possible) to ensure organism identification and susceptibility testing. - **Gram stain** can be done quickly (1–2 hours) and shows **morphology of organisms:** Gram-positive diplococci in pairs suggest *S. pneumoniae*; Gram-negative coccobacilli suggest *H. influenzae*; Gram-positive cocci in clusters suggest *S. aureus*. This can guide initial empiric therapy while awaiting culture. - **Culture** takes 24–48 hours but is definitive for identification and susceptibility. - **Quality of specimen:** A good sputum sample contains **many white blood cells (>25/low-power field) and few epithelial cells (<10/lpf)**, indicating it is from the lower respiratory tract, not saliva. **3. Blood Cultures:** - Obtained in **hospitalized/severe pneumonia** to detect bacteremia (occurs in ~20% of pneumococcal pneumonia). - **Collect before antibiotics** (two sets from two different sites). - Positive culture identifies the pathogen and guides therapy; also indicates worse prognosis. **4. Complete Blood Count (CBC):** - **Leukocytosis** (WBC >11,000, often >15,000) is typical in bacterial pneumonia; suggests bacterial infection. - **Normal or low WBC** may be seen in viral pneumonia, atypical infections, or severe/immunocompromised patients. - Left shift (increased immature forms) suggests acute bacterial infection. **5. Pulse Oximetry / ABG:** - **SpO2 <94%** at rest or exertion indicates hypoxaemia and warrants supplemental oxygen. - **ABG** (if severe): assess pH, PaO2, PaCO2, and HCO3– to evaluate severity and respiratory/metabolic status. Respiratory acidosis (↓pH, ↑PaCO2) indicates severe hypoxaemia and impending respiratory failure. **6. Tests for Atypical/Specific Organisms:** - **Mycoplasma PCR or serology:** If atypical features; useful to guide macrolide therapy. - **Legionella antigen (urine):** If Legionella suspected (institutional outbreak, travel history, high fever/diarrhoea/hepatitis). - **Influenza or RSV antigen/PCR:** If viral etiology suspected; helps de-escalate antibiotics if viral confirmed. **SEVERITY ASSESSMENT — Determining Inpatient vs. Outpatient Management:** Not all pneumonia patients require hospitalization. Severity assessment guides site of care: **Outpatient (CAP managed in primary care / community setting):** - No sepsis criteria. - Able to take oral medications and fluids. - Reliable follow-up. - Stable vital signs (RR <30, HR <120, SBP >90, SpO2 >94% on room air, no altered mental status). - No comorbidities or well-controlled comorbidities. - **Examples:** Young, healthy adult with lobar pneumonia; elderly with mild CAP and controlled diabetes. **Inpatient (Hospital Care):** - Signs of sepsis (fever >39°C, RR >30, HR >120, SBP <90, altered mental status). - Severe respiratory distress (RR >30, SpO2 <90% on room air, use of accessory muscles, inability to speak full sentences). - Confusion / altered mental status (especially elderly). - Comorbidities: age >65, chronic lung disease, heart failure, diabetes, renal impairment, immunosuppression. - Failure of outpatient therapy (return after 48–72 hours on antibiotics with worsening symptoms). - Hypoxaemia (SpO2 <92% on room air). - Imaging showing extensive infiltrates, cavitation, or pleural effusion. **PHARMACOTHERAPY — Antibiotic Selection for CAP (High-Yield NLE Content):** **First-Line for Community-Acquired Pneumonia (Philippines context):** **Outpatient CAP (oral therapy):** - **Amoxicillin** 500 mg orally three times daily for 7–10 days (or 875 mg twice daily). - Good coverage for *S. pneumoniae*, *H. influenzae*. - Affordable, safe, widely available in Philippines. - Often used as first-line for CAP in primary health centers. - **Macrolide** (e.g., **azithromycin**) 500 mg on day 1, then 250 mg daily for 4 more days (5-day total course). - Covers *S. pneumoniae*, *H. influenzae*, and **atypical organisms** (*Mycoplasma*, *Chlamydia*, *Legionella*). - Good choice if atypical features (gradual onset, dry cough, extrapulmonary manifestations). - **GI upset is common** (nausea, diarrhoea, abdominal pain). - **QT prolongation risk,** especially in elderly or with concurrent medications; monitor ECG if risk factors. - Increasing resistance in some regions; use judiciously. - **Respiratory fluoroquinolone** (e.g., **levofloxacin**) 500 mg once or twice daily for 7–10 days. - Excellent coverage of typical and atypical organisms. - Good lung penetration; oral bioavailability is high. - **Cautions:** Risk of **tendon rupture** (especially in elderly and those on corticosteroids); **QT prolongation**; **interactions with divalent cations** (calcium, iron, antacids); **effects on blood glucose** (hyperglycemia or hypoglycemia, important in diabetic patients). - Reserved for patients with comorbidities, treatment failure, or intolerance to beta-lactams. **Inpatient CAP (parenteral + oral step-down):** - **Beta-lactam + macrolide approach:** - **IV ceftriaxone** 1–2 g once daily (or divided) **PLUS IV azithromycin** 500 mg once daily for 2–3 days, then step down to oral amoxicillin/macrolide when improving. - Ceftriaxone covers typical organisms; azithromycin covers atypical organisms and enhances immune response. - This combination is standard in Philippine hospitals. - **Respiratory fluoroquinolone monotherapy:** - **IV levofloxacin** 500–750 mg once daily; step down to oral when improving. - Equivalent efficacy to beta-lactam + macrolide in some studies; convenient single agent. - More expensive than beta-lactam combinations; use if allergic to beta-lactams or special circumstances. **Duration of Therapy:** - **Typical: 7–10 days** for CAP. - **Longer courses (10–14 days)** for **severe CAP, Legionella, or Staphylococcus aureus**. - **Indicator of response:** Defervescence (fever resolves) within 48–72 hours; decreasing cough; improving SpO2. If no improvement by 48–72 hours, reconsider diagnosis (is it really pneumonia? Is there a complication like empyema? Is the organism resistant?), switch antibiotics, or obtain imaging. **Antipyretics & Supportive Care:** - **Paracetamol** for fever and discomfort (500 mg–1 g four times daily). - **Avoid NSAIDs** in severe pneumonia (may worsen outcomes in some studies); paracetamol is preferred. **Nursing Management & Interventions (NANDA-I Nursing Diagnoses & Maslow's Hierarchy):** Priority ordering follows Maslow: physiological needs (airway, oxygenation) first, then comfort, then psychosocial. **1. Ineffective airway clearance / Ineffective breathing pattern** (MOST CRITICAL PRIORITY) Rationale: Hypoxaemia (low blood oxygen) from alveolar consolidation is life-threatening and must be addressed immediately. *Interventions:* - **Assess and monitor respiratory status continuously:** - Respiratory rate (normal 12–20; tachypnoea >24 indicates respiratory distress). - Oxygen saturation (SpO2) via pulse oximetry; maintain **SpO2 >94%** (target >90% minimum). - Work of breathing: observe for **use of accessory muscles** (intercostal retractions, nasal flaring, abdominal breathing), **inability to speak full sentences** (sign of severe distress). - Breath sounds: note if present/absent, location of crackles or consolidation. - **ABG** if SpO2 <94% or RR >30 or signs of respiratory failure. - **Administer supplemental oxygen:** - **Starting point:** Oxygen to keep SpO2 **≥94%** (or ≥88–94% if COPD with CO2 retention risk, though this is individualised). - **Devices:** Nasal cannula 1–6 L/min (usual), non-rebreather mask (high-concentration), or Venturi mask (precise FiO2 delivery) if available. - **Titrate** based on SpO2; gradually reduce oxygen as patient improves to avoid oxygen dependency. - Monitor for **oxygen toxicity** (rare with short-term use) and **CO2 retention** in COPD patients (chronic CO2 retainers have blunted hypoxic drive; high oxygen may depress breathing; careful titration needed). - **Position for lung expansion:** - **High-Fowler's (head elevated 45–90 degrees)** or **semi-Fowler's (30–45 degrees)** to ease breathing and reduce work of respiration. - Avoid supine positioning unless necessary (promotes atelectasis and pooling of secretions). - **Lateral positioning** to the side of the consolidation **may increase shunting and worsen hypoxaemia** (consolidated lung does not participate in gas exchange; turning consolidated side up does not help). Position the **"good" lung down** (lateral on the non-consolidated side) to maximize perfusion of ventilated lung. In practice, most patients self-position for comfort; allow freedom of movement. - **Frequent position changes** (every 2 hours if bedridden) to prevent atelectasis and promote drainage of secretions. - **Promote airway clearance / secretion drainage:** - **Encourage deep breathing and coughing every 2–4 hours.** Teach the patient to take a deep breath, hold for 2 seconds, then cough forcefully. This mobilizes secretions and re-expands atelectatic alveoli. - **Incentive spirometry** (if available): Patient inhales deeply to achieve a target volume; a visual indicator shows progress. Helps prevent atelectasis and improves oxygenation. Teach to use 10 times per hour while awake. - **Hydration (crucial):** **Maintain 2–3 liters of fluid daily** (oral fluids, IV if unable to take oral, or IV for hospitalized patients). Adequate hydration thins secretions, making them easier to expectorate. Monitor for fluid overload if signs of heart failure. - **Humidified oxygen:** If available, deliver oxygen through a humidifier to moisten secretions and reduce airway irritation. - **Chest physiotherapy / percussion and drainage:** Not routine but may be considered if secretions are copious and patient cannot clear them. Nursing assistant or therapist taps the chest over consolidation to loosen secretions, then positions patient head-down to drain (postural drainage). Useful in hospitalized, bedridden patients. - **Suctioning:** Only if patient is intubated or unable to cough effectively (advanced illness, sedation). Closed suctioning system if mechanically ventilated to prevent hypoxia during suctioning. **2. Hyperthermia / Fever** (related to inflammatory response to infection) Rationale: Fever increases metabolic rate and oxygen demand; high fever (>39°C) is uncomfortable and increases risk of delirium, especially in elderly. *Interventions:* - **Monitor temperature frequently** (every 4–6 hours initially, or continuously if high fever). - **Administer antipyretics on schedule:** - Paracetamol 500 mg–1 g four times daily (every 6 hours). - Space doses to avoid overdose (max 4 g/day). - Give on schedule (not just when fever is high) for more consistent temperature control. - **Environmental cooling:** - Light clothing and lightweight bedding; remove unnecessary blankets. - Cool, well-ventilated room. - **Tepid sponging** (lukewarm water sponge on skin) can help if fever is very high and causing distress, though evidence is limited and antipyretics are preferred. **Avoid cold water or ice** (causes vasoconstriction and paradoxical rise in core temperature). - **Oral hydration:** Fever increases fluid loss through sweating; encourage frequent small sips of water, oral rehydration solution, or other fluids. - **Monitor for complications:** Fever with **confusion, delirium, or lethargy** in elderly warrants urgent evaluation (could be sepsis or delirium from fever itself). Fever with **stiff neck or photophobia** raises concern for meningitis (rare but serious; requires immediate re-evaluation). - **Document fever trends:** Note time, temperature, antipyretic given, and response. A fever that does not resolve by 48–72 hours on appropriate antibiotics suggests inadequate therapy, resistant organism, or complication (empyema, abscess); warrants clinical reassessment and possible imaging. **3. Acute pain** (pleuritic chest pain from pleural inflammation) Rationale: Pain limits breathing and coughing, which impairs airway clearance and oxygenation; pain management is essential to promote effective breathing and recovery. *Interventions:* - **Assess pain** using a pain scale (0–10 numeric scale or other standardized tool). - **Administer analgesics on schedule:** - Paracetamol 500 mg–1 g four times daily. - Ibuprofen 200–400 mg three times daily (if no contraindications like GI ulcer, kidney disease). - Avoid NSAIDs in severe pneumonia (potential harm); paracetamol is safest. - For severe pain, opioids (e.g., morphine) may be used in hospital settings but are not routine and carry risk of respiratory depression (caution in hypoxaemic patients). - **Splinting / chest wall support:** - Teach patient to hold or hug a pillow against the chest when coughing or deep breathing; this reduces chest wall movement and pain, allowing better breathing and more effective cough. - Patient may spontaneously do this; encourage and teach if not. - **Non-pharmacological comfort:** - Positioning with pillows for support. - Heat application (if available; not contraindicated): a warm (not hot) pack on the chest may ease pleuritic pain. - Distraction: music, TV, reading; keeps mind off pain. - Rest in a quiet environment. **4. Ineffective nutrition / Anorexia** (related to acute illness, fever, malaise) Rationale: Infection and fever increase metabolic demand; adequate nutrition supports immune function and recovery. Anorexia (loss of appetite) is common. *Interventions:* - **Assess appetite and oral intake:** - Monitor food/fluid intake; note if patient is leaving meals uneaten. - Assess for nausea, vomiting, or other barriers to eating. - **Offer small, frequent meals:** - Rather than three large meals, offer 5–6 small meals or snacks throughout the day. - Patient may tolerate small portions better when acutely ill. - **Provide preferred foods/fluids:** - Liquid or soft foods are easier to swallow if throat is sore. - Warm liquids (broth, soup, warm milk) are often preferred in acute illness and provide comfort. - Cold items (juice, popsicles) may soothe throat and provide fluids. - Honor patient preferences when possible (culturally appropriate foods increase adherence in Philippines context). - **Nutritional support:** - If unable to eat, ensure **adequate fluid intake (2–3 L/day)** via oral, IV, or other routes. - Vitamin C (citrus, tomato) and zinc may support immune function; encourage if patient can eat. - **Monitor intake/output (I&O):** For hospitalized patients; track fluids and urine output to ensure adequate hydration. **5. Deficient knowledge / Patient education** Rationale: Patients and families need to understand pneumonia, treatment, and when to return; education promotes compliance and early recognition of complications. *Interventions:* - **Explain pneumonia in simple terms:** "Your lungs are infected. The infection causes the air sacs to fill with fluid, making it harder for oxygen to get into your blood. The antibiotics will fight the infection, and your immune system will heal the lungs over the next 1–2 weeks." - **Medication education:** - Take antibiotics exactly as prescribed (dose, frequency, duration). - Complete the full course even if feeling better after 2–3 days; stopping early allows infection to return and increases resistance risk. - Take with food or without food, as directed (amoxicillin can be taken with or without food; levofloxacin should not be taken with calcium/iron/antacids which reduce absorption; follow specific instructions). - Report side effects (rash, nausea, diarrhoea) but do not stop antibiotics without guidance. - **Symptom expectation:** - Fever should improve within 48–72 hours; may take up to 1 week to resolve completely. - Cough may worsen initially as loosened secretions are expelled (expected, not a sign of worsening); gradually improves over 1–2 weeks. - Fatigue is normal; recovery is gradual; expect 2–4 weeks for full return to baseline energy. - Chest pain from pleurisy may persist longer than fever; continue pain management and splinting. - **Monitoring for complications (Warning Signs):** - **Return or seek care immediately if:** - **Increased dyspnoea / shortness of breath:** Fever from pneumonia should improve with antibiotics; increasing shortness of breath suggests deterioration (empyema, abscess, ARDS) and requires urgent re-evaluation. - **Persistent high fever (>39°C) beyond 48–72 hours on antibiotics:** Suggests inadequate therapy or complications; warrants CXR and possible change in antibiotics. - **Coughing up blood (haemoptysis):** Rare but concerning; could indicate lung abscess, cavitation, or other serious pathology. - **Severe pleuritic chest pain:** Especially if accompanied by dyspnoea, could indicate pneumothorax (air in pleural space) or large effusion. - **Confusion, severe lethargy, or altered mental status:** In elderly, may indicate sepsis or delirium from hypoxia; urgent evaluation needed. - **Signs of sepsis:** Severe shaking, very high fever, rapid heartbeat, low blood pressure, extreme weakness. - **Recovery expectations:** - Most CAP resolves with antibiotics; full radiographic clearing may take 4–6 weeks even after clinical improvement. - Return to work/school: typically safe once fever is resolved and breathing normalized (usually 3–5 days for mild CAP; longer if hospitalized). - Smoking cessation: if applicable, use this opportunity to discuss smoking and its role in pneumonia; cessation support resources. - **Prevention of future pneumonia:** - Annual influenza vaccine (reduces risk of influenza and secondary pneumonia). - Pneumococcal vaccine (for at-risk groups: age >65, chronic disease, asplenia, immunosuppression). - Hand hygiene, avoid exposure to sick persons, avoid smoking and secondhand smoke. **6. Risk for infection transmission** (if in hospital, manage infection control) Rationale: Hospitalized pneumonia patients may transmit pathogens; appropriate precautions protect others. *Interventions:* - **Standard precautions:** Hand hygiene (before/after patient contact), gloves if contact with body fluids, respiratory etiquette. - **Respiratory precautions (if specific pathogen transmitted by droplet/airborne):** - If suspected influenza or measles: **droplet precautions** (surgical mask on patient, healthcare worker mask). - If TB suspected: **airborne precautions** (see TB section; N95 respirator for staff). - For most bacterial CAP (pneumococcus, H. influenzae): standard precautions are sufficient. - **Patient education on hygiene:** - Cover mouth/nose with tissue when coughing/sneezing; dispose in trash. - Wash hands after coughing/sneezing. - Keep distance from vulnerable others (infants, elderly, immunocompromised). **7. Activity intolerance / Fatigue** Rationale: Acute illness and hypoxaemia limit energy; gradual mobilization promotes recovery and prevents complications (deep vein thrombosis, deconditioning). *Interventions:* - **Rest and activity balance:** - Encourage rest during acute phase (bed rest is not mandatory unless severely hypoxaemic; any activity increases oxygen demand). - As fever resolves and breathing improves, gradually increase activity (sit up in chair, walk short distances). - Avoid vigorous exercise until fully recovered (usually 2–4 weeks). - **Positioning:** Frequent position changes if bedridden (every 2 hours) to prevent DVT and bedsores. - **Support:** - Assist with ADLs (bathing, toileting, eating) as needed. - Provide call bell within reach; answer promptly to reduce patient exertion. **Complications of Pneumonia (Must Know for NLE):** 1. **Pleural effusion** — accumulation of fluid between lung and chest wall; common; usually reabsorbs with antibiotic therapy. If large or causing dyspnoea, may require thoracentesis (needle aspiration). If purulent (empyema) or blood-tinged (haemothorax), more urgent intervention may be needed. 2. **Empyema** — **infected pleural fluid (pus)**; occurs when infection extends to the pleural space. Presents with **persistent fever despite antibiotics, dyspnoea, chest pain**. Diagnosis: **ultrasound or CT of thorax, thoracentesis showing purulent fluid and positive culture**. Treatment: **antibiotics PLUS drainage** (thoracostomy tube or VATS — video-assisted thoracoscopic surgery). This is a serious complication requiring hospital care. 3. **Pneumothorax** — **air in the pleural space**; rare but can occur (especially in young males with pneumonia from *Staphylococcus aureus* or *Pneumocystis jirovecii*). Presents with **acute dyspnoea, pleuritic pain, and decreased breath sounds on one side**. Diagnosis: **CXR showing air-fluid level**. Treatment: **observation for small pneumothorax, chest tube for large/symptomatic cases**. 4. **Respiratory failure / ARDS (Acute Respiratory Distress Syndrome)** — progressive hypoxaemia and respiratory distress despite oxygen therapy. Occurs in severe pneumonia, especially with sepsis. Requires **ICU care, high-flow oxygen, possible mechanical ventilation, vasopressor support**. Mortality is high. 5. **Sepsis and septic shock** — systemic inflammatory response to infection; manifests as **fever/hypothermia, tachycardia, tachypnoea, altered mental status, hypotension**. Pneumonia is a common source of sepsis. Requires **urgent antibiotics, fluids, vasopressors, intensive care**. See sepsis protocol in hospital. 6. **Atelectasis** — partial or complete collapse of lung units due to inadequate ventilation (impaired cough, immobility, anesthesia complications). Prevents gas exchange, worsens hypoxaemia. **Prevention:** incentive spirometry, deep breathing, coughing, mobility, chest physiotherapy. 7. **Lung abscess** — localized collection of pus within lung tissue; can develop from **inadequately treated pneumonia, aspiration pneumonia, or hematogenous spread**. Presents as **persistent fever, productive cough with foul-smelling (putrid) sputum, dyspnoea**. Diagnosis: **CXR/CT showing cavitary lesion with air-fluid level**. Treatment: **prolonged antibiotics (3–4 weeks) with aerobic and anaerobic coverage; possible percutaneous or surgical drainage if large**. **High-Yield NLE Points for Pneumonia:** 1. **Priority = maintain patent airway and adequate oxygenation.** Position high-Fowler's, give oxygen to maintain SpO2 >94%, encourage deep breathing/coughing, hydrate to loosen secretions. 2. **Rust-coloured sputum = Streptococcus pneumoniae** (classic teaching point). 3. **In the elderly, confusion/delirium/lethargy may be the ONLY sign of pneumonia** (absent fever, absent obvious respiratory symptoms). This is a common NLE distractor and a critical assessment skill. 4. **First-line CAP antibiotics: amoxicillin or macrolide** (in Philippines primary care); cephalosporin + macrolide or respiratory fluoroquinolone in hospitalized/severe cases. 5. **Duration: 7–10 days.** Fever should resolve within 48–72 hours; if not, reconsider diagnosis or organism resistance. 6. **CXR is diagnostic** (shows infiltrate/consolidation). **Normal CXR does not rule out early pneumonia**; clinical judgment is essential. 7. **Aspiration pneumonia** — risk is high in **impaired swallowing, unconscious, NG feeding, gastric reflux**. Prevent by assessing swallowing, head-of-bed elevation, proper feeding technique. 8. **Pleural effusion is common and usually self-resolving with antibiotics.** **Empyema (infected pleural fluid) requires drainage PLUS antibiotics.** 9. **Incentive spirometry and deep breathing/coughing every 2–4 hours are essential nursing interventions** to prevent atelectasis and improve oxygenation.