The following are multiple choice questions (with answers) about medical knowledge.   **Question:** An 8–day old breast–fed baby presents with vomiting, poor feeding and loose stools. On examination the heart rate is 190/minute, blood pressure 50/30 mmHg, respiratory rate 72 breaths/minute and capillary refill time of 4 seconds. Investigations show hemoglobin level of 15 g/dl. Na 120 mEq/l, K 6.8 mEq/l, Cl 81 meq/l, bicarbonate 15 mEq/l, urea 30 mg/dl and creatinine 0.6 mg/dl. the most likely diagnosis is –   (A) Congenital adrenal hyperplasia   (B) Acute tubular necrosis   (C) Congenital hypertrophic pyloric stenosis   (D) Galactosemia
['(B) Acute tubular necrosis <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Congenital adrenal hyperplasia \n (B) Acute tubular necrosis \n (C) Congenital hypertrophic pyloric stenosis \n (D) Galactosemia <> possible answers', '  An 8–day old breast–fed baby presents with vomiting, poor feeding and loose stools. On examination the heart rate is 190/minute, blood pressure 50/30 mmHg, respiratory rate 72 breaths/minute and capillary refill time of 4 seconds. Investigations show hemoglobin level of 15 g/dl. Na 120 mEq/l, K 6.8 mEq/l, Cl 81 meq/l, bicarbonate 15 mEq/l, urea 30 mg/dl and creatinine 0.6 mg/dl. the most likely diagnosis is – <> context@']