NLE Renal & Urinary Nursing — UTI & Inflammatory Renal DisordersExam Answer Templates

Marks

1

Topic

Urinary Tract Infection — Pathophysiology

Difficulty

easy

Template Id

T1

Examiner Tip

For 1-mark identification questions, write the full scientific name first, then the abbreviation in parentheses. This shows clinical precision and removes any ambiguity.

Model Answer

The most common causative organism of an uncomplicated UTI is Escherichia coli (E. coli), a gram-negative bacterium that ascends from the perineum into the urinary tract.

Question Type

very_short_answer

Answer Structure

• Line 1: State the organism by full name and abbreviation — Escherichia coli (E. coli) [1 mark]

Scoring Breakdown

Common Mark Deductions

• Writing only 'bacteria' without specifying the organism — earns 0 marks
• Misspelling 'Escherichia' significantly — may lose the mark if the intended organism cannot be identified
• Writing Klebsiella or Staphylococcus without qualification — incorrect for uncomplicated UTI

Key Phrases To Include

• Escherichia coli
• E. coli
• ascending route
• most common

Marks

2

Topic

UTI — Pharmacology and Patient Teaching

Difficulty

easy

Template Id

T2

Examiner Tip

Examiners frequently test the phenazopyridine orange-urine teaching point because it is a classic patient education error. Emphasize that it relieves pain but does NOT treat the infection — this distinction often appears as a separate mark criterion.

Model Answer

The urinary analgesic commonly prescribed for UTI symptom relief is phenazopyridine (Pyridium). An important patient teaching point is that phenazopyridine turns the urine a harmless orange or red color, which is an expected side effect and does NOT indicate bleeding or worsening infection.

Question Type

short_answer

Answer Structure

• Line 1: Name the drug — phenazopyridine (Pyridium) [1 mark]
• Line 2: State the patient teaching point — urine turns orange/red, harmless, expected [1 mark]

Scoring Breakdown

Common Mark Deductions

• Stating phenazopyridine is an antibiotic — this is factually incorrect and will lose the mark
• Saying 'the urine changes color' without specifying the color or explaining it is harmless — incomplete answer, likely 0.5 or 0 marks
• Confusing phenazopyridine with nitrofurantoin or cotrimoxazole

Key Phrases To Include

• phenazopyridine
• Pyridium
• urinary analgesic
• orange or red urine
• harmless/expected
• NOT an antibiotic
• treats symptoms only

Marks

3

Topic

UTI — Manifestations and Assessment

Difficulty

easy

Template Id

T3

Examiner Tip

Always distinguish lower UTI (no fever, suprapubic involvement) from upper UTI (fever, CVA tenderness). Examiners specifically watch for students who incorrectly list fever as a cystitis symptom.

Model Answer

The three cardinal signs and symptoms of lower UTI (cystitis) are: (1) Dysuria — a burning or painful sensation during urination; (2) Urinary frequency and urgency — an abnormally frequent and sudden compelling need to void; and (3) Suprapubic pain or pressure — discomfort felt over the lower abdomen directly above the pubic bone. Cloudy, foul-smelling urine and possible hematuria may also be noted.

Question Type

short_answer

Answer Structure

• Point 1: Dysuria — define the term [1 mark]
• Point 2: Urinary frequency and urgency [1 mark]
• Point 3: Suprapubic pain or pressure [1 mark]
• Optional addition: Cloudy, foul-smelling urine (no additional mark but shows clinical depth)

Scoring Breakdown

Common Mark Deductions

• Writing 'fever' as a cardinal sign of lower UTI — fever is typically ABSENT in cystitis and is a sign of upper UTI (pyelonephritis); this demonstrates a critical conceptual error
• Listing signs without clinical terms — writing 'it hurts to pee' instead of 'dysuria' loses marks for lack of professional terminology
• Repeating the same symptom in different words (e.g., frequency and frequent urination) — this counts as one item, not two

Key Phrases To Include

• dysuria
• urinary frequency
• urgency
• suprapubic pain
• cloudy urine
• foul-smelling urine

Marks

3

Topic

UTI — Diagnostics and Specimen Collection

Difficulty

medium

Template Id

T4

Examiner Tip

The single most important mark in this question is the 'before antibiotics' timing. Examiners consistently test this because it is a real-world clinical error. Write it explicitly and clearly.

Model Answer

To correctly collect a urine specimen for culture and sensitivity: (1) Instruct the patient to perform perineal hygiene — cleanse the urethral meatus with antiseptic wipes, wiping front to back for female patients to prevent contamination. (2) Have the patient begin voiding, discard the initial stream, and collect the midstream urine (clean-catch midstream specimen) in a sterile container, then allow the rest of the stream to pass. (3) MOST CRITICALLY — collect the specimen BEFORE administering the prescribed antibiotic, because antibiotic administration can suppress bacterial growth and produce a false-negative culture result. The specimen should be sent to the laboratory immediately or refrigerated to preserve sample integrity.

Question Type

short_answer

Answer Structure

• Step 1: Perineal cleansing — front-to-back technique [1 mark]
• Step 2: Clean-catch midstream collection into a sterile container [1 mark]
• Step 3: Collect BEFORE antibiotics are given — critical timing point [1 mark]

Scoring Breakdown

Common Mark Deductions

• Failing to mention the BEFORE-antibiotic timing — this is the most critical clinical point and commonly missed
• Describing a random urine or first-void specimen instead of midstream — incorrect procedure
• Not specifying the front-to-back direction for perineal cleansing

Key Phrases To Include

• clean-catch midstream
• sterile container
• front to back
• before antibiotics
• culture and sensitivity
• midstream urine
• refrigerate if not sent immediately

Marks

5

Topic

Pyelonephritis vs. Cystitis

Difficulty

medium

Template Id

T5

Examiner Tip

Five-mark differentiating questions are structured: 1 mark for anatomy, 3 marks for manifestations, 1 mark for diagnostics. Always use the three-part structure. Examiners are specifically checking whether you know that CVA tenderness and WBC casts are UPPER UTI findings.

Model Answer

PYELONEPHRITIS vs. CYSTITIS: (a) Anatomical Location: Cystitis is a LOWER UTI affecting the urinary bladder (and urethra). Pyelonephritis is an UPPER UTI affecting the renal pelvis and renal parenchyma (kidney tissue itself). (b) Three Distinguishing Clinical Manifestations of Pyelonephritis: (1) Systemic fever and chills — typically high-grade fever (>38.5°C), indicating the infection has spread beyond the bladder and is now a systemic illness. Cystitis typically presents WITHOUT fever. (2) Costovertebral angle (CVA) tenderness — pain and tenderness elicited by percussion over the flank area at the costovertebral angle, indicating kidney inflammation. This is ABSENT in uncomplicated cystitis. (3) Flank pain — a deep, aching pain in the flank or loin area (below the ribs, above the iliac crest), often accompanied by nausea and vomiting, reflecting involvement of the renal capsule. (c) Diagnostic Finding Specific to Pyelonephritis: White blood cell (WBC) casts in the urine sediment are a hallmark finding in pyelonephritis. These tubular casts indicate renal tubular inflammation and confirm that the infectious process has involved the kidney parenchyma, distinguishing upper UTI from bladder-limited lower UTI.

Question Type

long_answer

Answer Structure

• Part (a): Define anatomical location for both conditions — lower (bladder) vs. upper (kidney/renal pelvis) [1 mark]
• Part (b): State 3 distinguishing manifestations of pyelonephritis not seen in cystitis — fever, CVA tenderness, flank pain [3 marks — 1 each]
• Part (c): State WBC casts or relevant upper-UTI-specific finding [1 mark]

Scoring Breakdown

Common Mark Deductions

• Listing dysuria and frequency as distinguishing features — these occur in BOTH conditions and do not differentiate them
• Failing to label the anatomical site with clinical terms (renal pelvis, parenchyma) — loses precision marks
• Confusing WBC casts (pyelonephritis) with RBC casts (glomerulonephritis) — a critical clinical error
• Not explaining WHY fever distinguishes pyelonephritis — stating only 'fever present' without noting its absence in cystitis provides incomplete contrast

Key Phrases To Include

• upper UTI
• lower UTI
• renal pelvis and parenchyma
• costovertebral angle (CVA) tenderness
• high-grade fever
• systemic illness
• WBC casts
• flank pain
• no fever in cystitis

Marks

1

Topic

Glomerulonephritis — Diagnostics

Difficulty

easy

Template Id

T6

Examiner Tip

RBC casts are pathognomonic for glomerular disease. Every time you see 'cola-colored urine' in an NLE scenario, think glomerulonephritis and write RBC casts as your answer.

Model Answer

The hallmark urinalysis finding in APSGN is the presence of RBC casts (red blood cell casts) in the urine sediment, along with gross hematuria that gives the urine a smoky, tea-colored, or cola-colored appearance.

Question Type

very_short_answer

Answer Structure

• Line 1: State RBC casts (red blood cell casts) as the hallmark finding [1 mark]

Scoring Breakdown

Common Mark Deductions

• Writing 'WBC casts' — these indicate pyelonephritis, not glomerulonephritis; a critical distinction
• Writing only 'blood in urine' without the clinical term 'hematuria' or 'RBC casts'
• Writing 'massive proteinuria' — this is nephrotic syndrome, not GN; confusing the two syndromes

Key Phrases To Include

• RBC casts
• red blood cell casts
• hematuria
• cola-colored
• tea-colored
• smoky urine

Marks

2

Topic

Glomerulonephritis — Diagnostics

Difficulty

medium

Template Id

T7

Examiner Tip

The complement level direction is a classic NLE trick question. APSGN has LOW complement because it is consumed by the immune complex reaction. Write 'decreased C3' explicitly to secure the mark.

Model Answer

Two laboratory findings that confirm a recent streptococcal infection in APSGN are: (1) Elevated antistreptolysin-O (ASO) titer — an antibody produced against streptolysin O, a toxin released by Group A beta-hemolytic Streptococcus; elevated levels confirm recent streptococcal infection of the throat or skin. (2) Low serum complement level (decreased C3) — indicating complement consumption by immune complex deposition in the glomeruli, a hallmark of the immune-mediated pathophysiology of APSGN.

Question Type

short_answer

Answer Structure

• Finding 1: Elevated ASO (antistreptolysin-O) titer — state what it measures [1 mark]
• Finding 2: Low serum complement/decreased C3 — state what it indicates [1 mark]

Scoring Breakdown

Common Mark Deductions

• Stating 'elevated complement' instead of 'decreased complement' — the opposite is true and earns 0 marks for that criterion
• Writing 'throat culture' — this identifies current strep, not evidence of RECENT past infection; it does not confirm APSGN
• Confusing ASO titer with ANA (antinuclear antibody, which is for lupus nephritis)

Key Phrases To Include

• antistreptolysin-O titer
• ASO titer
• elevated
• serum complement
• C3
• decreased/low
• Group A beta-hemolytic Streptococcus

Marks

2

Topic

Nephrotic Syndrome — Classic Features

Difficulty

easy

Template Id

T8

Examiner Tip

Remember the mnemonic 'PHHE' — Proteinuria, Hypoalbuminemia, Hyperlipidemia, Edema. The NLE often presents a scenario and asks which syndrome is described — if you see massive proteinuria + anasarca + normal BP, it is always nephrotic.

Model Answer

The four classic features of nephrotic syndrome (the nephrotic tetrad) are: (1) Massive proteinuria — greater than 3.5 g/day in adults, the defining feature, caused by loss of the glomerular protein-selective barrier; (2) Hypoalbuminemia — decreased serum albumin due to urinary protein wasting; (3) Generalized edema (anasarca) — periorbital, dependent edema, and ascites from reduced plasma oncotic pressure; and (4) Hyperlipidemia — elevated serum cholesterol and triglycerides, as the liver compensates for low oncotic pressure by synthesizing excess lipoproteins.

Question Type

short_answer

Answer Structure

• Feature 1: Massive proteinuria [0.5 mark]
• Feature 2: Hypoalbuminemia [0.5 mark]
• Feature 3: Generalized edema / anasarca [0.5 mark]
• Feature 4: Hyperlipidemia [0.5 mark]

Scoring Breakdown

Common Mark Deductions

• Listing hypertension as a feature — blood pressure is typically NORMAL OR LOW in nephrotic syndrome (unlike GN); this error shows GN-nephrotic confusion
• Writing 'hematuria' as a feature — hematuria is characteristic of nephritic syndrome (GN), not nephrotic syndrome
• Writing only 'edema' without specifying its generalized/anasarca nature — incomplete for 0.5-mark criteria

Key Phrases To Include

• massive proteinuria
• greater than 3.5 g/day
• hypoalbuminemia
• generalized edema
• anasarca
• hyperlipidemia
• foamy urine

Marks

3

Topic

GN vs. Nephrotic Syndrome — Differential Features

Difficulty

medium

Template Id

T9

Examiner Tip

This is one of the highest-yield comparison questions in renal nursing. Use a two-column or parallel sentence format so the contrast is visually obvious. Examiners award marks for clarity of contrast, not just listing features.

Model Answer

COMPARISON OF NEPHRITIC vs. NEPHROTIC SYNDROME: (1) Urinary Finding: In nephritic syndrome (glomerulonephritis), the hallmark urinary finding is HEMATURIA — gross blood producing cola/tea-colored urine with RBC casts. In nephrotic syndrome, the hallmark is MASSIVE PROTEINURIA with foamy/frothy urine; hematuria is absent or minimal. (2) Blood Pressure: In nephritic syndrome (GN), blood pressure is ELEVATED (hypertension) due to sodium and fluid retention from reduced GFR. In nephrotic syndrome, blood pressure is NORMAL or LOW because plasma volume may be decreased from fluid shift into tissues. (3) Protein Loss: In nephritic syndrome (GN), protein loss in the urine is MILD TO MODERATE. In nephrotic syndrome, protein loss is MASSIVE (greater than 3.5 g/day in adults), defining the condition and causing hypoalbuminemia.

Question Type

short_answer

Answer Structure

• Row 1 — Urinary finding: Hematuria/RBC casts (GN) vs. massive proteinuria/frothy urine (nephrotic) [1 mark]
• Row 2 — Blood pressure: Hypertension (GN) vs. normal or low BP (nephrotic) [1 mark]
• Row 3 — Protein loss: Mild-moderate (GN) vs. massive >3.5 g/day (nephrotic) [1 mark]

Scoring Breakdown

Common Mark Deductions

• Reversing the blood pressure findings — stating hypertension in nephrotic and normal BP in GN is a critical factual error
• Stating 'both have proteinuria' without qualifying the degree — this misses the critical quantitative distinction
• Failing to use clinical terms for the urinary finding — writing 'blood in urine' instead of 'hematuria with RBC casts'

Key Phrases To Include

• hematuria
• RBC casts
• cola-colored urine
• massive proteinuria
• foamy urine
• hypertension
• normal or low blood pressure
• greater than 3.5 g/day
• hypoalbuminemia

Marks

5

Topic

Glomerulonephritis — Nursing Management

Difficulty

hard

Template Id

T10

Examiner Tip

Case study questions reward the nursing process structure. Examiners want to see: (1) diagnosis identification, (2) NANDA nursing diagnosis, (3) numbered, specific interventions with rationale. Numbered interventions are easier to mark and demonstrate organized clinical thinking.

Model Answer

CLINICAL ANALYSIS: The clinical picture — cola-colored urine (hematuria), hypertension, periorbital edema, and antecedent streptococcal sore throat 10 days ago — is consistent with ACUTE POST-STREPTOCOCCAL GLOMERULONEPHRITIS (APSGN). PRIORITY NURSING DIAGNOSIS (NANDA, Maslow-ordered): (1) Excess Fluid Volume related to decreased GFR and sodium/water retention, evidenced by hypertension and periorbital edema — PHYSIOLOGICAL PRIORITY (2) Risk for Hypertensive Crisis related to fluid overload and RAAS activation (3) Risk for Imbalanced Nutrition: Less than Body Requirements related to dietary restrictions NURSING MANAGEMENT: 1. MONITOR BLOOD PRESSURE CLOSELY — measure BP every 4 hours or as ordered; hypertensive encephalopathy (severe headache, seizures, altered consciousness) is the most dangerous acute complication. Report systolic BP exceeding the age-appropriate threshold immediately. Administer antihypertensives and diuretics as prescribed. 2. RESTRICT SODIUM AND FLUID INTAKE — during the oliguric/edematous phase, implement a sodium-restricted diet and fluid restriction as ordered to reduce fluid overload. Teach parents about sodium-containing foods in the Philippine diet (soy sauce, fish sauce, processed snacks). 3. MONITOR FLUID BALANCE DAILY — weigh the patient daily at the same time, using the same scale, before breakfast. Monitor and record accurate intake and output (I&O) every 8 hours. Report oliguria (urine output less than 0.5 mL/kg/hour in children). 4. ADMINISTER ANTIBIOTICS — administer penicillin as prescribed to eradicate any residual streptococcal infection. Instruct parents to complete the full antibiotic course even after symptoms improve. 5. MONITOR RENAL FUNCTION AND URINE — observe urine color for clearing of hematuria; monitor BUN, creatinine, and serum electrolytes as ordered. Observe for RBC casts in urinalysis results. 6. PATIENT AND FAMILY EDUCATION — explain the disease process, the expected course of recovery (most children recover fully), dietary restrictions, activity limitations during the acute phase, and signs of complications (worsening headache, decreased urine output, visual changes) that require immediate reporting.

Question Type

case_study

Answer Structure

• Opening: Identify the condition from clinical cues [implicit — needed for accurate interventions]
• Nursing Diagnosis: State the priority NANDA diagnosis with Maslow rationale [1 mark]
• Intervention 1: BP monitoring and antihypertensive management [1 mark]
• Intervention 2: Sodium and fluid restriction [1 mark]
• Intervention 3: Daily weight, I&O monitoring [1 mark]
• Intervention 4: Antibiotics and patient/family education [1 mark]

Scoring Breakdown

Common Mark Deductions

• Starting with interventions without identifying the nursing diagnosis — loses the first mark on structured questions
• Failing to specify the complication of hypertensive encephalopathy — generic BP monitoring without naming the danger is insufficiently specific
• Recommending high protein diet — APSGN requires protein restriction only if BUN is markedly elevated; incorrectly recommending high protein demonstrates misunderstanding
• Not mentioning daily weight as a specific fluid-balance monitoring tool
• Omitting the Maslow/priority rationale for the NANDA diagnosis

Key Phrases To Include

• acute post-streptococcal glomerulonephritis
• APSGN
• Excess Fluid Volume
• NANDA
• blood pressure monitoring
• hypertensive encephalopathy
• sodium restriction
• fluid restriction
• daily weight
• intake and output
• oliguria
• penicillin
• RBC casts

Marks

1

Topic

Urolithiasis — Priority Nursing Intervention

Difficulty

easy

Template Id

T11

Examiner Tip

Maslow prioritization is tested heavily in NLE. Acute pain from renal colic is a severe physiological stressor — pain management is always the first-line intervention before any surveillance or prevention measures.

Model Answer

The priority nursing intervention for acute renal colic is PAIN RELIEF — administering prescribed analgesics (opioids such as morphine and NSAIDs such as ketorolac as ordered) to manage the severe, excruciating flank pain, which is the patient's immediate physiological distress (Maslow: physiological need).

Question Type

very_short_answer

Answer Structure

• Line 1: State 'pain relief' or 'administer analgesics' as the priority with Maslow rationale [1 mark]

Scoring Breakdown

Common Mark Deductions

• Stating 'increase fluid intake' as the priority — while important, fluid intake is secondary to immediate pain control; the priority is comfort/pain per Maslow's physiological needs
• Stating 'strain all urine' as the priority — this is essential but not the FIRST priority action
• Omitting any reference to the drug class or the Maslow rationale

Key Phrases To Include

• pain relief
• analgesia
• opioids
• morphine
• ketorolac
• NSAIDs
• renal colic
• priority
• physiological

Marks

2

Topic

Urolithiasis — Prevention and Dietary Teaching

Difficulty

medium

Template Id

T12

Examiner Tip

The NLE often tests the counterintuitive teaching point that calcium oxalate stone patients should NOT avoid dietary calcium. Include this in your answer to demonstrate advanced clinical knowledge and potentially earn bonus recognition.

Model Answer

The most common type of kidney stone is the CALCIUM OXALATE stone, accounting for approximately 75–80% of all renal calculi. One key dietary modification to prevent recurrence is limiting oxalate-rich foods in the diet, specifically foods such as spinach, kangkong (water spinach), rhubarb, beets, chocolate, tea, and nuts, which contribute to elevated urinary oxalate and crystal formation.

Question Type

short_answer

Answer Structure

• Line 1: Identify calcium oxalate as the most common stone type [1 mark]
• Line 2: State limiting oxalate-rich foods with local Philippine examples [1 mark]

Scoring Breakdown

Common Mark Deductions

• Stating 'restrict calcium intake' — current guidelines do NOT recommend calcium restriction for calcium oxalate stones; dietary calcium can actually bind oxalate in the gut and reduce absorption
• Confusing calcium oxalate stones with struvite stones — struvite stones are associated with UTI, not dietary oxalate
• Not providing specific food examples — vague answers like 'eat less oxalate' without examples may not earn the full mark

Key Phrases To Include

• calcium oxalate
• most common
• 75 to 80 percent
• oxalate-rich foods
• spinach
• chocolate
• tea
• limit oxalate
• do not restrict dietary calcium

Marks

5

Topic

Urolithiasis — Nursing Management

Difficulty

hard

Template Id

T13

Examiner Tip

For 5-mark intervention questions, always number your interventions and include a brief rationale for each. Examiners work down the list awarding 1 mark per complete intervention-rationale pair. Unnumbered paragraphs are harder to mark and risk losing marks even when content is correct.

Model Answer

NURSING INTERVENTIONS FOR ACUTE UROLITHIASIS (Priority-Ordered per Maslow): (1) PAIN MANAGEMENT — FIRST PRIORITY: Administer prescribed analgesics (opioids such as morphine IV/IM and NSAIDs such as ketorolac) to relieve the severe renal colic. NSAIDs additionally reduce ureteral smooth muscle spasm, facilitating stone passage. Reassess pain using a numeric rating scale (NRS) every 30–60 minutes after administration. Rationale: Acute severe pain is the most immediate physiological threat to the patient's well-being. (2) STRAIN ALL URINE: Place a urine strainer (fine mesh gauze or commercial stone strainer) at the bedside and instruct the patient to strain ALL urine output. Collect any stone or gravel passed, place it in a dry container, and send it to the laboratory for stone analysis (composition determines long-term prevention). Rationale: Stone composition guides definitive dietary and pharmacological prevention. (3) INCREASE FLUID INTAKE: Encourage and maintain a fluid intake of 2.5 to 3 liters per day (orally or IV as ordered) to dilute the urine, reduce crystal saturation, and facilitate stone passage. Monitor intake and output accurately. Rationale: Adequate hydration is the most universally applicable stone-prevention measure and aids passage of small stones. (4) PROMOTE AMBULATION: Encourage the patient to ambulate and move around as tolerated. Gravity and movement assist downward migration of the stone through the ureter toward the bladder for passage. Rationale: Immobility increases urinary stasis and stone formation risk; ambulation promotes natural stone passage. (5) MONITOR FOR COMPLICATIONS — OBSTRUCTION AND INFECTION: Observe closely for signs of urinary obstruction with superimposed infection: fever greater than 38°C, worsening unrelenting pain, decreased or absent urine output on the affected side, chills, or hypotension. Report these immediately, as obstruction with infection (infected hydronephrosis) is a UROLOGIC EMERGENCY requiring urgent surgical or procedural intervention. Administer antiemetics for nausea/vomiting as ordered.

Question Type

long_answer

Answer Structure

• Intervention 1: Pain management with drug class and rationale [1 mark]
• Intervention 2: Strain all urine — procedure and purpose [1 mark]
• Intervention 3: Increase fluid intake with target amount [1 mark]
• Intervention 4: Promote ambulation and explain rationale [1 mark]
• Intervention 5: Monitor for obstruction/infection with specific danger signs [1 mark]

Scoring Breakdown

Common Mark Deductions

• Placing 'strain urine' before pain management — this reverses the Maslow-based priority order and loses the first mark
• Not specifying the fluid intake target amount — 'increase fluids' without '2.5–3 L/day' is insufficiently precise
• Omitting the complication monitoring point entirely — a full 5-mark question must address surveillance for emergencies
• Failing to state the rationale for any intervention — in long-answer questions, rationale is part of the expected content
• Writing 'give medications' without specifying drug class — generic statements do not earn marks

Key Phrases To Include

• renal colic
• opioids
• NSAIDs
• ketorolac
• strain all urine
• stone analysis
• 2.5 to 3 liters per day
• ambulation
• obstruction with infection
• urologic emergency
• hydronephrosis
• numeric rating scale

Marks

2

Topic

Urolithiasis — Stone Types and Prevention

Difficulty

medium

Template Id

T14

Examiner Tip

Think of stone types by their associations: Struvite = Sepsis (UTI), Uric acid = Urate/Gout, Calcium oxalate = Common/Diet, Cystine = Congenital. These memory links help you answer comparison questions quickly and accurately.

Model Answer

STRUVITE vs. URIC ACID STONES: (1) Cause/Association: Struvite stones (magnesium-ammonium-phosphate) are associated with RECURRENT URINARY TRACT INFECTIONS (UTIs) caused by urease-producing organisms (e.g., Proteus, Klebsiella), which alkalinize the urine and promote crystal precipitation. They are large, can form STAGHORN calculi that fill the renal pelvis. Uric acid stones are associated with HYPERURICEMIA, GOUT, and high-purine diets (organ meats, red meat, shellfish). (2) Prevention: Struvite stone prevention centers on TREATING AND PREVENTING RECURRENT UTIs through antibiotics and adequate hydration. Uric acid stone prevention includes a LOW-PURINE DIET (limiting red meat, organ meats, shellfish), urinary alkalinization, and the xanthine oxidase inhibitor ALLOPURINOL to reduce uric acid production.

Question Type

short_answer

Answer Structure

• Struvite: cause = recurrent UTI/urease-producing bacteria; prevention = treat/prevent UTI [1 mark]
• Uric acid: cause = hyperuricemia/gout/high-purine diet; prevention = low-purine diet + allopurinol [1 mark]

Scoring Breakdown

Common Mark Deductions

• Confusing struvite with calcium oxalate stones — struvite is specifically associated with infection, not diet
• Failing to mention allopurinol for uric acid stones — this is a high-yield pharmacology point specific to this stone type
• Stating 'increase fluids' as the prevention for struvite — while true, this is generic and does not address the UTI-specific etiology that earns the mark

Key Phrases To Include

• struvite
• magnesium-ammonium-phosphate
• UTI
• urease-producing
• staghorn calculi
• uric acid stones
• gout
• hyperuricemia
• high-purine diet
• allopurinol
• low-purine diet

Marks

5

Topic

Nephrotic Syndrome — Pathophysiology and Nursing Management

Difficulty

hard

Template Id

T15

Examiner Tip

Pathophysiology questions reward step-by-step sequential reasoning. Use connector phrases like 'This causes...', 'As a result...', and 'Therefore...' to show the examiner that you understand the mechanism as a chain, not just isolated facts. Each link in the chain is worth a mark.

Model Answer

PATHOPHYSIOLOGY OF EDEMA IN NEPHROTIC SYNDROME: In nephrotic syndrome, there is increased permeability of the glomerular filtration membrane to proteins. This results in MASSIVE URINARY PROTEIN LOSS (proteinuria greater than 3.5 g/day). The loss of albumin — the primary plasma protein responsible for maintaining colloid oncotic pressure — leads to a FALL IN SERUM ALBUMIN LEVELS (hypoalbuminemia). With decreased plasma oncotic pressure, the Starling forces that normally keep fluid within blood vessels are disrupted. Fluid shifts from the INTRAVASCULAR compartment into the INTERSTITIAL compartment (third-spacing), producing generalized edema: initially periorbital edema (most prominent in the morning), then progressing to dependent edema (ankles, legs), ascites (peritoneal fluid), and eventually anasarca (massive generalized edema). The kidneys perceive this as low circulating volume, activating the renin-angiotensin-aldosterone system (RAAS), which causes further sodium and water retention, worsening the edema. Urine appears FROTHY or FOAMY due to the high protein content. TWO NURSING INTERVENTIONS TO MANAGE EDEMA: (1) MONITOR FLUID STATUS DAILY — Weigh the patient daily at the same time (before breakfast, after voiding, using the same scale). A weight gain of greater than 0.5–1 kg per day indicates worsening fluid retention. Also measure abdominal girth daily (for ascites) and monitor intake and output every 8 hours. These measurements guide the evaluation of response to diuretic therapy and dietary restriction. Administer prescribed diuretics (furosemide) and monitor serum electrolytes, particularly potassium, for hypokalemia. (2) IMPLEMENT SODIUM RESTRICTION AND SKIN CARE — Restrict dietary sodium as prescribed (typically less than 2 g/day of sodium during the edematous phase) to reduce further fluid retention. In the Philippine context, advise the patient to avoid high-sodium condiments (toyo, patis, bagoong) and processed foods. Provide meticulous skin care to edematous areas: elevate dependent extremities, use pressure-redistributing mattresses, reposition every 2 hours, and apply moisturizers to prevent skin breakdown, as edematous tissue is extremely fragile and susceptible to pressure injuries.

Question Type

long_answer

Answer Structure

• Pathophysiology Part 1: Glomerular permeability → massive proteinuria → hypoalbuminemia [1 mark]
• Pathophysiology Part 2: Decreased oncotic pressure → fluid shifts from intravascular to interstitial → edema [1 mark]
• Pathophysiology Part 3: RAAS activation → sodium and water retention → worsens edema (frothy urine) [1 mark]
• Intervention 1: Daily weight + abdominal girth + I&O monitoring + diuretic administration [1 mark]
• Intervention 2: Sodium restriction + skin care for edematous tissue [1 mark]

Scoring Breakdown

Common Mark Deductions

• Stating edema is caused by excess water intake — the mechanism is oncotic, not simply intake-based; this fundamental pathophysiology error loses both mechanism marks
• Omitting the RAAS component of edema — the secondary aldosterone-mediated retention is a distinct pathophysiological step worth its own mark
• Recommending high-protein diet to compensate for protein loss — this is now discouraged as it worsens proteinuria; it represents a significant clinical error
• Writing 'restrict fluids' as the primary intervention — fluid restriction alone without sodium restriction is incomplete and less evidence-based for nephrotic edema management
• Not specifying daily weight timing (before breakfast) — vague 'weigh daily' answers may lose precision marks

Key Phrases To Include

• glomerular permeability
• massive proteinuria
• hypoalbuminemia
• colloid oncotic pressure
• third-spacing
• interstitial compartment
• anasarca
• RAAS activation
• sodium restriction
• daily weight
• frothy urine
• skin care
• pressure injury