Midwife Licensure Exam Fundamentals of Care & the Health-Care Process — Vital Signs & Basic Physiologic MonitoringDetailed Explanation

Body Temperature: Regulation, Measurement, and Nursing Management

Body temperature reflects the balance between heat produced (thermogenesis) and heat lost (thermolysis), regulated by the hypothalamus — the body's 'thermostat.' When the hypothalamic set point rises (due to pyrogens from infection or inflammation), the body generates and conserves heat, causing fever. The nurse's role is to accurately measure temperature, identify deviations, understand their clinical significance, and implement appropriate interventions. NORMAL ADULT RANGES BY ROUTE: • Oral: 36.5–37.5°C (average 37.0°C) — most common in practice • Rectal: approximately 0.5°C HIGHER than oral (most accurate reflection of core temperature; contraindicated in rectal surgery, neutropenic patients, neonates, and patients with diarrhea) • Axillary: approximately 0.5°C LOWER than oral (safest and least invasive, but least accurate; recommended for newborns and unconscious patients) • Tympanic/Temporal: approximates core temperature; useful for quick screening Remember: Rectal = High (+0.5°C), Axillary = Low (-0.5°C) compared to oral. DEVIATIONS: • Pyrexia/Fever: temperature above normal; broadly called 'hyperthermia' • Hyperpyrexia: very high fever above 41°C — a medical emergency • Hypothermia: core temperature below 35°C — causes confusion, slow pulse, shallow respirations FEVER PATTERNS (commonly tested in NLE): • Intermittent: temperature alternates between febrile and normal (as in malaria) • Remittent: temperature fluctuates but stays above normal (common in bacterial infections) • Relapsing/Recurrent: febrile periods interspersed with 1–2 normal days (as in dengue, typhoid) • Constant/Sustained: temperature remains consistently elevated (as in typhoid fever plateau) THREE PHASES OF FEVER (NLE FAVORITE): 1. Onset/Cold/Chill Phase: Hypothalamic set point rises → body tries to generate heat → shivering, chills, goosebumps (piloerection), pallor, cold extremities. NURSING ACTION: Provide warm blankets; monitor closely. Do NOT give cool sponge bath at this phase. 2. Course/Plateau Phase: Body temperature matches the new set point → patient feels warm, flushed, thirsty, fatigued. NURSING ACTION: Increase oral fluid intake, loosen clothing, tepid sponge bath, antipyretics as ordered. 3. Defervescence/Flush/Crisis Phase: Set point returns to normal → body dissipates heat → profuse diaphoresis (sweating), flushing, warm skin. NURSING ACTION: Monitor for dehydration and fluid-electrolyte imbalance; provide fluids; change damp linens. NURSING MANAGEMENT OF FEVER: • Tepid sponge bath (lukewarm water, approximately 32–37°C) — stimulates vasodilation and evaporation • Avoid cold water or alcohol rubs — cause shivering and vasoconstriction, which INCREASE temperature • Administer antipyretics as ordered: PARACETAMOL (acetaminophen) is the drug of choice — 500mg to 1g every 4–6 hours, maximum 4g/day for healthy adults (lower in hepatic impairment or alcohol users) • Increase oral fluid intake to replace losses from sweating • Provide light clothing; maintain cool environment • Monitor for complications: febrile seizures (especially in children 6 months–5 years), dehydration, altered sensorium TEMPERATURE CONVERSION FORMULAS: °F = (°C × 9/5) + 32 °C = (°F − 32) × 5/9 Example: 37°C = (37 × 9/5) + 32 = 66.6 + 32 = 98.6°F Example: 102.2°F = (102.2 − 32) × 5/9 = 70.2 × 5/9 = 39°C

Pulse: Rate, Rhythm, Volume, and Clinical Significance

The pulse represents the palpable pressure wave generated by the heart's contraction as blood is ejected into the arteries. It reflects cardiac output and circulatory status. Nurses assess the pulse at multiple sites for different clinical purposes. NORMAL RANGES: • Adult: 60–100 beats per minute • Newborn: 120–160 beats per minute • Infants (1–12 months): 100–160 bpm • Toddlers (1–3 years): 90–150 bpm • Preschool (3–6 years): 80–140 bpm • School-age (6–12 years): 70–120 bpm • Adolescents (12–18 years): 60–100 bpm (Pulse rate decreases with age — a key principle) DEVIATIONS: • Tachycardia: >100 bpm in adults (causes: fever, pain, anxiety, hemorrhage, anemia, hyperthyroidism, certain medications like epinephrine) • Bradycardia: <60 bpm in adults (causes: athletes [normal], hypothyroidism, increased intracranial pressure, beta-blockers, digoxin toxicity, vagal stimulation) PULSE ASSESSMENT PARAMETERS (Rate, Rhythm, Volume, Bilateral Equality): • Rate: Count for 30 seconds × 2 (regular rhythm) OR full 60 seconds (irregular rhythm) • Rhythm: Regular or irregular (irregularly irregular = atrial fibrillation) • Volume/Amplitude: 0 = Absent; 1+ = Weak/Thready; 2+ = Normal/Strong; 3+ = Bounding • Bilateral Equality: Compare both sides (unequal radial pulses may suggest vascular occlusion) PULSE SITES AND THEIR USES: • Radial (wrist): Most common routine assessment site in adults • Apical (5th intercostal space, left midclavicular line — using stethoscope): Most accurate; used for infants, irregular rhythms, and BEFORE giving cardiac medications like digoxin • Brachial: Used in blood pressure measurement; pulse check for INFANTS in cardiac arrest • Carotid: EMERGENCY — pulse check for adults in cardiac arrest (NEVER palpate both sides simultaneously — risk of reduced cerebral blood flow and stimulation of carotid sinus) • Femoral: Used in critically ill patients, cardiac catheterization assessment • Popliteal: Behind the knee; assesses lower extremity circulation • Posterior Tibial: Ankle; assesses foot circulation • Dorsalis Pedis: Top of foot; assesses pedal circulation (a weak or absent dorsalis pedis pulse is a sign of peripheral arterial disease) PULSE DEFICIT: Defined as the difference between the apical pulse and the radial pulse. It occurs when some heartbeats are too weak to produce a palpable peripheral pulse (e.g., in atrial fibrillation, premature beats). Measurement: TWO nurses assess simultaneously — one counts the apical pulse using a stethoscope, and the other counts the radial pulse. Pulse deficit = Apical rate − Radial rate. Example: Apical = 98, Radial = 82 → Pulse deficit = 16 beats/min DIGOXIN SAFETY RULE (CRITICAL NLE POINT): Always assess the APICAL pulse for a FULL ONE MINUTE before administering digoxin. HOLD digoxin and notify the physician if: • Adult apical pulse < 60 bpm • Infant/child: apical pulse < 90–100 bpm (per facility policy) Digoxin slows the heart rate. If already bradycardic, giving digoxin can cause dangerous bradycardia or cardiac arrest. FACTORS AFFECTING PULSE: • Age (higher in infants, decreases with age) • Exercise (increases pulse — up to 200 bpm during maximal exercise) • Fever (each 1°C rise in temperature increases pulse by approximately 10 beats/min) • Medications (beta-blockers lower it; epinephrine, atropine raise it) • Hemorrhage (early: tachycardia; late: bradycardia and shock) • Position changes (standing increases pulse slightly due to orthostatic compensation) • Stress and emotions (sympathetic stimulation increases pulse) • Pain (acute pain increases pulse; severe chronic pain may cause vagal stimulation and bradycardia)

Respiration: Assessment, Patterns, and Oxygen Saturation

Respiration is the exchange of oxygen (O₂) and carbon dioxide (CO₂) between the body and the environment. The respiratory rate is controlled by the medulla oblongata and pons (brainstem). CO₂ levels are the primary stimulus for breathing in healthy individuals. NORMAL RANGES: • Adult: 12–20 breaths per minute (eupnea) • Newborn: 30–60 breaths per minute • Infant: 25–50 breaths per minute • Toddler: 20–30 breaths per minute • School-age child: 18–25 breaths per minute • Adolescent: 12–20 breaths per minute THREE PARAMETERS TO ASSESS: 1. Rate: Count full inspirations for 30 seconds × 2 (regular) or 60 seconds (irregular or abnormal) 2. Depth: Shallow, normal, or deep 3. Rhythm: Regular or irregular 4. Character/Effort: Easy or labored (use of accessory muscles, nasal flaring, intercostal retractions) IMPORTANT TRICK FOR ASSESSMENT: Count respirations WITHOUT telling the patient — awareness causes deliberate alteration of breathing rate. The best technique: after counting the pulse (while still appearing to hold the wrist), continue observing chest rise and fall to count respirations. This is a frequently tested nursing skill principle. DEVIATIONS IN RATE: • Tachypnea: >20 breaths/min (adult) — causes: fever, pain, anxiety, hypoxia, pneumonia • Bradypnea: <12 breaths/min — causes: opioid overdose, CNS depression, increased intracranial pressure • Apnea: complete absence of breathing (emergency) ABNORMAL BREATHING PATTERNS (HIGH-YIELD NLE): • Cheyne-Stokes: gradual increase then decrease in depth and rate, followed by a period of apnea (10–60 seconds), then repeats. Seen in: serious cardiac failure, brainstem damage, uremia, end-of-life. Mnemonic: 'Wax and wane with pause' — like waves coming in and going out. • Kussmaul: deep, rapid, regular breathing (hyperpnea). The body is trying to 'blow off' excess CO₂ to compensate for metabolic acidosis. Seen in: diabetic ketoacidosis (DKA), renal failure, severe diarrhea. Mnemonic: 'Kussmaul = Ketoacidosis' • Biot's (Ataxic): completely irregular breathing with random periods of apnea. Seen in: meningitis, severe head injury, brainstem lesions • Apneustic: prolonged inspiratory hold followed by brief expiration. Seen in: brainstem injury DYSPNEA TERMINOLOGY: • Dyspnea: subjective difficulty or discomfort in breathing • Orthopnea: dyspnea when lying flat; patient must sit up or use multiple pillows to breathe comfortably (seen in left heart failure, severe COPD). Measured in 'pillow count' (e.g., 2-pillow orthopnea) • Paroxysmal Nocturnal Dyspnea (PND): sudden awakening at night with severe shortness of breath OXYGEN SATURATION (SpO₂) — PULSE OXIMETRY: Pulse oximetry measures the percentage of hemoglobin saturated with oxygen using a non-invasive probe placed on the finger, earlobe, or forehead. NORMAL SpO₂: 95–100% INTERVENTION THRESHOLD: • SpO₂ <95%: monitor more closely • SpO₂ <90%: HYPOXEMIA — requires immediate nursing intervention (reposition, increase O₂, notify physician) • SpO₂ <85%: SEVERE hypoxemia — urgent intervention SPECIAL CONSIDERATION — COPD PATIENTS: Patients with chronic CO₂ retention (Type II respiratory failure) rely on HYPOXIC DRIVE (low O₂) as their stimulus to breathe. If given too much supplemental oxygen, the hypoxic drive is suppressed and they may stop breathing. Target SpO₂ for COPD patients with known CO₂ retention: 88–92% (NOT the usual 95–100%). This is a critical NLE safety principle. FACTORS AFFECTING ACCURACY OF PULSE OXIMETRY: • Nail polish (particularly dark colors) — remove or use different site • Poor peripheral perfusion (cold extremities, hypotension, vasoconstriction) • Carbon monoxide poisoning — oximeter will read falsely NORMAL (CO and O₂ absorb at similar wavelengths) • Anemia — may give falsely normal SpO₂ despite inadequate oxygen delivery • Motion artifact — patient movement causes inaccurate readings

Blood Pressure: Measurement, Deviations, and Clinical Significance

Blood pressure (BP) is the force exerted by circulating blood against the walls of the arteries. It is determined by two key factors: CARDIAC OUTPUT (the amount of blood the heart pumps per minute) × PERIPHERAL VASCULAR RESISTANCE (the resistance of the blood vessels). Understanding this relationship explains why conditions that affect either factor change blood pressure. BP = Cardiac Output × Peripheral Vascular Resistance NORMAL ADULT BLOOD PRESSURE CLASSIFICATION (per current guidelines): • Normal: Systolic <120 mmHg AND Diastolic <80 mmHg • Elevated: Systolic 120–129 mmHg and Diastolic <80 mmHg • Hypertension Stage 1: Systolic 130–139 OR Diastolic 80–89 mmHg • Hypertension Stage 2: Systolic ≥140 OR Diastolic ≥90 mmHg • Note: Classic NLE references may still cite ≥140/90 as the hypertension threshold — follow the reference specified in your exam review book. • Hypotension: Systolic <90 mmHg (or a clinically significant drop from baseline) PULSE PRESSURE: Pulse Pressure = Systolic BP − Diastolic BP Normal: 30–40 mmHg Example: BP of 120/80 → PP = 40 mmHg (normal) Narrow Pulse Pressure (<25 mmHg): suggests decreased cardiac output (e.g., heart failure, cardiac tamponade, aortic stenosis) Widened Pulse Pressure (>40 mmHg): suggests increased stroke volume or decreased peripheral resistance (e.g., aortic regurgitation, severe anemia, increased ICP — Cushing's triad) MEAN ARTERIAL PRESSURE (MAP): MAP = Diastolic BP + 1/3 (Pulse Pressure) Normal MAP: 70–100 mmHg MAP >60 mmHg is required to perfuse vital organs (kidneys, brain, heart) ORTHOSTATIC (POSTURAL) HYPOTENSION: Defined as a drop of ≥20 mmHg in systolic BP OR ≥10 mmHg in diastolic BP when moving from lying to standing. Assessment: Measure BP while supine → sitting → standing (wait 1–3 minutes between positions) Clinical signs: Dizziness, light-headedness, syncope upon standing Risk groups: Elderly, patients on antihypertensives, diuretics, prolonged bed rest, diabetics (autonomic neuropathy) Nursing interventions: Rise slowly (dangle legs before standing), elastic stockings, adequate hydration ACCURATE BLOOD PRESSURE MEASUREMENT TECHNIQUE: PATIENT PREPARATION: • Seat patient with back supported, feet flat on the floor • Rest arm at HEART LEVEL (on a table or supported) • Rest the patient for AT LEAST 5 minutes before measurement • No talking, no caffeine or smoking 30 minutes prior • Empty bladder (a full bladder can elevate BP) CUFF SELECTION — CRITICAL NLE TOPIC: • Cuff bladder should encircle 80% of the upper arm circumference • Cuff TOO SMALL → Falsely HIGH reading (blood pressure appears higher than it is) • Cuff TOO LARGE → Falsely LOW reading (blood pressure appears lower than it is) Mnemonic: 'Small cuff = Scary HIGH, Large cuff = Laughably LOW' ARTERY/SITE CONSIDERATIONS: • Do NOT measure on the arm with: IV infusion, dialysis fistula/graft, lymphedema, cast, or on the affected side of a mastectomy • Use the same arm for serial measurements to ensure consistency AUSCULTATORY METHOD (KOROTKOFF SOUNDS): • Phase I: First clear tapping sound = SYSTOLIC BP • Phase II: Swishing/murmur sounds • Phase III: Crisper, louder sounds • Phase IV: Muffled sounds (sometimes used as diastolic in children) • Phase V: Disappearance of sounds = DIASTOLIC BP in adults AUSCULTATORY GAP: Temporary disappearance of Korotkoff sounds between systolic and diastolic readings — common in hypertensive patients. If the nurse does not inflate the cuff high enough, they may start listening AFTER the gap and miss the true (higher) systolic pressure. Solution: ALWAYS palpate the systolic first. Inflate the cuff 30 mmHg above the point where the radial pulse disappears (palpatory method), then auscultate to get the true systolic. COMMON MEASUREMENT ERRORS AND THEIR EFFECTS: • Arm BELOW heart level → Falsely HIGH BP (gravity adds hydrostatic pressure) • Arm ABOVE heart level → Falsely LOW BP (gravity reduces hydrostatic pressure) • Cuff too loose or improperly wrapped → Falsely HIGH BP • Deflating cuff too quickly → Underestimation of systolic; overestimation of diastolic • Not waiting between repeated measurements → Venous congestion → Falsely HIGH BP • Talking during measurement → Falsely HIGH BP BP REGULATION: The body regulates BP through: 1. Baroreceptors (carotid sinus, aortic arch) — detect pressure changes and adjust HR and vascular tone 2. Renin-Angiotensin-Aldosterone System (RAAS) — regulates blood volume and sodium retention 3. Antidiuretic Hormone (ADH) — increases water retention to raise BP 4. Sympathetic Nervous System — vasoconstriction and increased HR

Pain: The Fifth Vital Sign — Assessment and Management

Pain is recognized as the FIFTH VITAL SIGN and must be assessed, documented, and managed with the same diligence as temperature, pulse, respiration, and blood pressure. The most important principle: PAIN IS SUBJECTIVE — it is 'whatever the experiencing person says it is, existing whenever the experiencing person says it does' (McCaffery's definition). The nurse's role is to BELIEVE the patient's report of pain, assess it systematically, implement interventions, and reassess effectiveness. UNDER RA 9173 (Philippine Nursing Act of 2002): Nurses are legally and professionally responsible for pain assessment and management as part of holistic nursing care. Failure to assess and report pain adequately is a breach of nursing standards. PAIN ASSESSMENT TOOLS: • Numeric Rating Scale (NRS): 0–10 scale (0 = no pain, 10 = worst imaginable pain) — used for alert adults and older children • Wong-Baker FACES Pain Scale: Six faces from smiling (0) to crying (10) — used for CHILDREN (ages 3 and up) and adults who cannot use the numeric scale • FLACC Scale (Face, Legs, Activity, Cry, Consolability): 0–10 behavioral scale — used for INFANTS, toddlers, and NON-VERBAL patients or those who cannot self-report • Behavioral Pain Scale (BPS): Used in ICU patients on mechanical ventilation • Visual Analog Scale (VAS): 10-cm line from 'no pain' to 'worst pain' — research and clinical use PAIN ASSESSMENT FRAMEWORK — PQRST: • P — Provoking/Palliating factors: What makes it worse or better? • Q — Quality: How does it feel? (sharp, dull, burning, stabbing, throbbing, aching, cramping) • R — Region/Radiation: Where is it? Does it spread anywhere? • S — Severity: Rate your pain on a scale of 0–10 • T — Timing: When did it start? Is it constant or intermittent? How long does it last? Alternative: OLDCARTS (Onset, Location, Duration, Character, Alleviating factors, Relieving factors, Timing, Severity) TYPES OF PAIN: BY DURATION: • Acute Pain: Short-term (<3–6 months); has identifiable cause; serves a protective warning function; associated with sympathetic response (tachycardia, elevated BP, diaphoresis, restlessness); resolves with healing • Chronic Pain: Persistent >3–6 months; may outlast tissue healing; often associated with depression, sleep disturbance, and functional decline; parasympathetic adaptation occurs (patient may not appear to be in pain) BY MECHANISM: • Nociceptive Pain: From activation of pain receptors (nociceptors) by tissue damage - Somatic: Well-localized, aching/throbbing (bone fractures, skin lacerations) - Visceral: Poorly localized, cramping/squeezing (bowel obstruction, renal colic, angina) • Neuropathic Pain: From nerve injury or dysfunction; burning, shooting, electric-shock quality; examples: diabetic peripheral neuropathy, post-herpetic neuralgia, phantom limb pain REFERRED PAIN: Pain felt at a location distant from its actual source Examples: • Cardiac ischemia → left arm, jaw, neck pain • Cholecystitis → right shoulder pain • Appendicitis → McBurney's point (initially periumbilical, then right iliac fossa) • Renal calculi → flank pain radiating to groin WHO ANALGESIC LADDER (3-STEP APPROACH): Step 1 — Mild pain (NRS 1–3): Non-opioid analgesics (paracetamol, NSAIDs like ibuprofen or mefenamic acid) ± adjuvants Step 2 — Moderate pain (NRS 4–6): Weak opioids (tramadol, codeine) ± non-opioids ± adjuvants Step 3 — Severe pain (NRS 7–10): Strong opioids (morphine, oxycodone, fentanyl) ± non-opioids ± adjuvants Adjuvant medications: Antidepressants (amitriptyline for neuropathic pain), anticonvulsants (gabapentin), corticosteroids, muscle relaxants NON-PHARMACOLOGIC PAIN MANAGEMENT: • Cutaneous stimulation: Massage, heat therapy (relaxes muscle spasms), cold therapy (reduces inflammation and numbs), TENS (transcutaneous electrical nerve stimulation) • Distraction: Music, TV, conversation, art, prayer — diverts attention from pain • Relaxation techniques: Deep breathing, progressive muscle relaxation, meditation • Guided imagery: Mentally transporting the patient to a pleasant place or experience • Positioning: Elevating a painful limb, semi-Fowler's for abdominal pain, SIMS for back pain • Cognitive-behavioral therapy (CBT) • Spiritual support — highly relevant in the Filipino cultural context where faith and prayer are integral to coping OPIOID SAFETY: • Monitor for respiratory depression (most dangerous adverse effect — RR <12/min) • Antidote for opioid overdose: NALOXONE (Narcan) • Other opioid side effects: constipation, nausea/vomiting, urinary retention, sedation, pruritus • REASSESS PAIN after intervention: 30–60 minutes after oral/IM analgesic; 15–30 minutes after IV analgesic REASSESSMENT IS MANDATORY — an intervention is only complete when its effectiveness is evaluated. This reflects the EVALUATING step of the nursing process.

When to Assess Vital Signs and Documentation

Knowing WHEN to assess vital signs is as important as knowing HOW to measure them. Vital sign assessment is both a routine and a responsive activity in nursing practice. WHEN TO ASSESS VITAL SIGNS: 1. Upon ADMISSION to a healthcare facility — establishes the patient's baseline 2. At ROUTINE intervals per facility protocol (typically every 4–8 hours in stable patients, more frequently in critical patients) 3. BEFORE and AFTER surgery, invasive procedures, or any intervention that may affect cardiovascular/respiratory status 4. BEFORE administering medications that affect vital signs (cardiac drugs, antihypertensives, sedatives, opioids) 5. With any CHANGE IN CONDITION — new symptoms, altered level of consciousness, patient complaint 6. Before and after nursing interventions that affect vital signs — ambulation, suctioning, position changes 7. When the patient reports a SYMPTOM that may reflect a vital sign change (chest pain, dizziness, palpitations, shortness of breath) DOCUMENTATION PRINCIPLES: Accurate, timely documentation is a legal and professional obligation under RA 9173. Each vital sign must be recorded with: • The VALUE obtained • The ROUTE or SITE used (e.g., 'T: 38.2°C axillary,' 'P: 96 apical,' 'BP: 138/86 right arm, sitting') • The DATE and TIME of measurement • Any relevant CONTEXT (before/after activity, before/after medication, patient complaint) Values are plotted on a GRAPHIC FLOW SHEET so that trends are visible at a glance — this is critical for early recognition of deterioration. EARLY WARNING SIGNS OF PATIENT DETERIORATION (NLE SAFETY PRINCIPLE): A pattern of RISING heart rate + RISING respiratory rate + FALLING blood pressure + FALLING SpO₂ is an EARLY WARNING of hemodynamic compromise (shock, sepsis, respiratory failure). This is the basis for Modified Early Warning Score (MEWS) systems used in Philippine hospitals. When you detect this pattern: ESCALATE IMMEDIATELY — call the physician, prepare for emergency intervention, document the time of notification. SPECIAL POPULATIONS: • INFANTS AND CHILDREN: Higher heart and respiratory rates, lower BP than adults. Assess RESPIRATIONS FIRST (before the infant cries), then the apical pulse (before disturbing the child), then BP last. Count respirations and apical pulse for a FULL MINUTE in infants. • ELDERLY: May have BLUNTED febrile response (an elderly patient can have a serious infection with only a low-grade or no fever). Arteries are stiffer (arteriosclerosis) → higher systolic, wider pulse pressure. Greater risk of orthostatic hypotension due to baroreceptor insensitivity. • Always compare readings to the PATIENT'S OWN BASELINE, not just population norms.

39.5°C is a significant fever (pyrexia). This level of fever warrants close monitoring, antipyretic administration as ordered, tepid sponge bath, increased fluid intake, and assessment for the phase of fever. The nurse would document this as 'T: 39.5°C (oral)' with the time and date.

A pulse deficit of 22 bpm indicates that 22 out of every 126 ventricular contractions are too weak to generate a palpable peripheral pulse. This is clinically significant because it means the heart is inefficiently perfusing peripheral tissues. In atrial fibrillation, the irregularly timed contractions result in variable stroke volumes — some beats eject too little blood to create a radial pulse. The nurse must report this finding to the physician and continue to monitor the patient's cardiac status and signs of reduced perfusion.

The lying pulse pressure of 52 mmHg is above normal (30–40 mmHg), suggesting increased stiffness of arteries (common in hypertension and elderly patients). The 26 mmHg drop in systolic BP upon standing exceeds the 20 mmHg threshold for orthostatic hypotension. Nursing interventions: instruct the patient to rise slowly, dangle legs before standing, ensure adequate hydration, review medications (especially diuretics and antihypertensives), implement fall prevention measures.

COPD patients with chronic hypercapnia breathe primarily in response to low oxygen (hypoxic drive) rather than high CO₂ (as in healthy individuals). Increasing oxygen to achieve a 'normal' SpO₂ can eliminate this drive, causing respiratory depression and potential apnea. The nurse should explain this principle to the new nurse and document the rationale for maintaining the current oxygen level. Always follow the physician's prescribed SpO₂ target for COPD patients.

Chronic cancer pain is associated with physiologic adaptation — patients may not display the expected signs of acute pain (grimacing, guarding, tachycardia). The absence of visible distress does NOT mean the pain is absent or less severe. McCaffery's definition is clear: pain is whatever the patient says it is. Withholding pain medication based on observable behavior alone violates the patient's right to pain management and is a breach of nursing responsibility under RA 9173. Administer the analgesic, reassess in 30–60 minutes (oral) or 15–30 minutes (IV), and document both assessments.

In infants, the least disturbing assessments are performed first and the most disturbing (BP) last. A crying or agitated infant will have elevated respiratory rate, heart rate, and blood pressure, making the readings inaccurate. Observe respirations while the infant is quiet (watch chest rise/count for 60 seconds), then auscultate the apical pulse for 60 seconds, then take temperature (method depends on facility — axillary is safest), and finally measure BP which typically requires a cuff and may be the most upsetting. This sequence yields the most accurate and reliable data.