This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Electrolyte Imbalance, Subject name: Medicine
[{'content': 'A CLD patient was having pedal oedema and was prescribed thiazides. He complains of muscle cramps and excessive sleepiness. Work up shows the following repo. pH= 7.55, pCO2= 38 mmHg, Na= 140, K= 3.0mEq, Chloride= 91mEq and HCO3= 33. Comment on the diagnosis. \nSelect and explain. \nA. Normal anion gap Metabolic alkalosis, B. Elevated anion gap metabolic alkalosis, C. Metabolic alkalosis with compensated respiratory acidosis, D. Normal anion gap metabolic alkalosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: CLD, pedal edema - GFR|- RAAS stimulate | Aldosterone | Hypokalemic Metabolic alkalosis Here, AG = Na - (Cl- + HCO3-) = 140 - (91+33) = 16 (|) The "normal" value for the AG repoed by clinical laboratories has declined with improved methodology for measuring plasma electrolytes, and ranges from 6 to 12 mmol/L, with an average of ~10 mmol/L.', 'role': 'assistant'}]