1 :

Hint : 💡 Think hypoventilation CO₂ build-up.

Correct Answers:

  • Respiratory acidosis


Rationale :

🔷 Head injury can depress the brainstem respiratory drive, causing hypoventilation and CO₂ retention.

🔷 Snoring/airway obstruction while sleeping points to hypoventilation → ↑PaCO₂ → ↓pH.

🔷 CO₂ (carbonic acid) narcosis produces lethargy/somnolence, explaining “couldn’t get up.”

🔷 ABG pattern: ↓pH, ↑PaCO₂, with renal HCO₃⁻ compensation if time allows.

🔷 Rapid recognition is key: treat underlying ventilatory failure (airway, ventilation support).


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2 :

Hint : 💡 DKA = high-gap acidosis.

Correct Answers:

  • Compensated metabolic acidosis


Rationale :

🔶 Pregnant, insulin-dependent diabetic with polyuria/polydipsia fits DKA, a metabolic acidosis state.

🔶 In DKA, lungs compensate with Kussmaul respirations (↓PaCO₂) to buffer low pH.

🔶 ABG shows ↓pH (acidic), ↓HCO₃⁻, and compensatory ↓PaCO₂ toward normal pH.

🔶 Ketone production from insulin deficiency drives the high-anion-gap acidosis.

🔶 Volume depletion from osmotic diuresis reinforces clinical thirst and frequent urination.


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3 :

Hint : 💡 Hyperventilation = low CO₂.

Correct Answers:

  • Uncompensated respiratory alkalosis


Rationale :

💠 Tachypnea (RR 28) with mild respiratory distress drives excess CO₂ blow-off → ↑pH.

💠 Vomiting can cause metabolic alkalosis, but hyperventilation here points primarily to respiratory cause.

💠 Acute onset means renal compensation has not occurred → uncompensated.

💠 Typical ABG: ↑pH, ↓PaCO₂, with near-normal HCO₃⁻ early on.

💠 Clinical delirium can be worsened by cerebral vasoconstriction from low PaCO₂.


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4 :

Hint : 💡 Clot then bleed pattern.

Correct Answers:

  • Disseminated Intravascular Coagulation


Rationale :

💎 Diffuse bleeding, petechiae, and purpura with trauma/major injury strongly suggest DIC.

💎 Microthrombi form first, consuming platelets/clotting factors, then bleeding ensues (“consumptive coagulopathy”).

💎 Labs typically: ↓platelets, ↑PT/↑aPTT, ↑D-dimer, ↓fibrinogen.

💎 Widespread endothelial/tissue factor activation is common after major trauma.

💎 Management targets the trigger plus support (e.g., cryo, platelets) if bleeding severe.


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5 :

Hint : 💡 Think aldosterone = Na⁺ hold.

Correct Answers:

  • Aldosterone hypersecreting tumor


Rationale :

◈ Aldosterone promotes Na⁺ reabsorption (and K⁺ loss) in distal nephron → ↑serum Na⁺ tendency.

◈ Primary hyperaldosteronism (Conn’s) can present with hypernatremia, hypokalemia, and hypertension.

◈ Increased total body sodium and water retention shifts volume status toward expansion.

◈ Other listed choices either dilute Na⁺ (↑water intake) or lose Na⁺ (↑urinary loss), which don’t cause hypernatremia.

◈ Consider renin-aldosterone testing and adrenal imaging for confirmation.


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6 :

Hint : 💡 Think Reed–Sternberg.

Correct Answers:

  • Hodgkin's Lymphoma


Rationale :

❖ Painless, firm lymphadenopathy (4 cm) with cyclic fevers/night sweats suggests Hodgkin (Pel-Ebstein).

❖ Prior EBV/mono increases risk for Hodgkin’s.

❖ Path hallmark: Reed–Sternberg cells on lymph node biopsy.

❖ “B symptoms” (fever, night sweats, weight loss) are classic systemic features.

❖ Often contiguous nodal spread; staging guides combined chemo ± radiation.


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7 :

Hint : 💡 Neuro = B12 low.

Correct Answers:

  • High Cyanocobalamin (Vit Bl 2) levels


Rationale :

🔹 Neurologic signs (paresthesias, clumsiness, balance issues) point to B12 deficiency, not folate alone.

🔹 Exam: beefy red tongue and pallor align with megaloblastic anemia.

🔹 Labs typically show ↑MCV, possible ↓retic, and ↑methylmalonic acid in B12 deficiency.

🔹 Demyelination of dorsal columns/lateral corticospinal tracts explains neuro findings.

🔹 Causes include pernicious anemia, malabsorption, or strict dietary deficiency.


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8 :

Hint : 💡 MI biomarkers without STE.

Correct Answers:

  • NSTEMI


Rationale :

🔵 Prolonged ischemic chest pain (>20–30 min) unrelieved by nitro fits acute coronary syndrome.

🔵 Typical NSTEMI shows positive troponin without ST-segment elevation; pain may persist >4 h.

🔵 Risk profile (↑LDL, ↓HDL, smoking, stimulant use) raises probability of plaque rupture with partial occlusion.

🔵 Management parallels ACS: antiplatelets, anticoagulation, statin, beta-blocker, and risk-guided early PCI.

🔵 STEMI would require ST elevation; stable/unstable angina lack necrosis (troponin rise).


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9 :

When asked if there was anything wrong with their daughter, the father mentions. "When kiss her goodnight, her skin tastes very salty." The pediatrician asked them both if anyone in their family has a history of chronic respiratory illnesses. The wife says she has a 12-year-old nephew with an oxygen tank and the husband says his mother died at 22 due to some medical condition. but he doesn't know anything more. Both the mother and father deny any chronic medical conditions. 


The parents ask the pediatrician. "What is wrong with my child?" The doctor responds with. "l believe your child has and it is a(n) genetic disease."


Hint : 💡 Salty sweat = CF (AR).

Correct Answers

  • Blank 1 Correct Option: Cystic Fibrosis I Autosomal Recessive
  • Blank 2 Correct Option: Valley Fever I Autosomal Dominant

Rationale :

🟢 “Salty skin” is classic for CF (↑sweat chloride).

🟢 Autosomal recessive inheritance matches family hints of affected relatives/siblings with early severe disease.

🟢 CFTR mutation causes thick secretions, recurrent lung infections, and pancreatic insufficiency.

🟢 Early infant signs include failure to thrive, chronic cough, and steatorrhea.

🟢 Diagnosis: sweat chloride test and/or CFTR genetic testing.


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10 :

Hint : 💡 DI → water loss → volume down.

Correct Answers:

  • Hypovolemic shock


Rationale :

🟣 Diabetes insipidus → massive free-water loss → hypovolemia and potential shock.

🟣 Decompensated shock with unconsciousness after weeks of polyuria fits volume depletion.

🟣 Exam/vitals (often tachycardia, hypotension, poor perfusion) align with hypovolemic physiology.

🟣 Management priorities: rapid isotonic fluids, treat underlying DI (e.g., desmopressin if central DI).

🟣 Other shock types (septic, anaphylactic, cardiogenic) lack the pure water-loss trigger seen here.


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Total Questions: 10

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