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Correct Answer - A T wave inversion develop after ST elevations return to baseline. There are four stages of ECG changes in the evolution of acute pericarditis. In stage 1, there is widespread elevation of the ST segments, often with upward concavity, involving two or three standard limb leads and V2 to V6, with reciprocal depressions only in aVR and sometimes V1, as well as depression of the PR segment Usually there are no significant changes in QRS complexes. In stage 2, after several days, the ST segments return to normal, and only then, or even later, do the T waves become inverted (stage 3). Ultimately, weeks or months after the onset of acute pericarditis, the ECG returns to normal in stage 4. Ref: Harrisons principles of internal medicine, 18th edition, Page: 1971

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Correct Answer-B Ans. is 'b' i.e., Aplastic crisis . Parvovirus B19 selectively infects erythroid precursors and is the most common aetiological agent that induces . aplastic crisis in patients with hereditary spherocytosis (and other Hemolytic disorders). Transient aplastic crisis . Persons with decreased erythrocytes caused by conditions such as iron deficiency anemia, human immunodeficiency virus sickle cell disease, spherocytosis or thalassemia are at risk of transient aplastic crisis if infected with parvovirus B19. . The virus causes a cessation of erythrocyte production. . Parvovirus infection may be the first manifestation in HS • It begins with reticulocytosis and thrombocytosis

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Clinical Background: Elderly diabetic female Multiple episodes of vomiting after outside food (suggests GI cause) BP is low → could be hypovolemia or shock ABG: pH = 7.5 → alkalosis pCO₂ = 45 mmHg → normal (suggests this is not respiratory) HCO₃⁻ = ↑ (implied, though exact value not given) → metabolic alkalosis --- Electrolytes: Na⁺ = 130 mEq/L → Mild hyponatremia K⁺ = 3.5 mEq/L → Low-normal potassium Cl⁻ = 90 mEq/L → Hypochloremia --- Interpretation: pH 7.5 + Normal pCO₂ + High HCO₃⁻ = Metabolic Alkalosis This matches prolonged vomiting: Loss of HCl from the stomach → loss of hydrogen ions → metabolic alkalosis Loss of Cl⁻ → hypochloremia Volume depletion → hypotension Kidneys reabsorb Na⁺ in exchange for H⁺ and K⁺ → exacerbates alkalosis and can cause K⁺ loss

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A 10-year-old child with AIDS presented with fexth cough with purulent sputum and difficulty inbreathio On auscultation, bronchial sounds were heard nih coarsecrepitations in right intra-mammary and infr scapular area. Chest X-ray showed right lower lote consølidation, His current CD4 count is 55 and is nol on regular medication. Which of the following is t etiological agent for this presentation?

An elderly diabetic female has presented with muliplk episodes of vomiting after few hours of consumin food from outside. On admission BP is low and ABG shows pH 7.5, pC0,= 45 mm Hg and Hco;=] mEq. Na*= 130, K+ = 3.5 and Chloride = 90 mEq'L What is the etiology of these findings?

Correct Answer: a. Ulnar nerve --- Explanation: The image shows a nerve conduction study (NCS) setup. The electrodes are placed: Over the little finger (5th digit) And along the ulnar side of the forearm This corresponds anatomically to the ulnar nerve, which: Supplies motor innervation to the intrinsic hand muscles Provides sensory innervation to the medial 1.5 fingers (little finger and half of the ring finger)