A 39-year-old woman with resistant hypertension (BP 168/102 mmHg) presents with frequent muscle cramps and polyuria. Vital signs show HR 88/min, RR 16/min, temperature 37.2°C. Laboratory studies reveal potassium 2.9 mEq/L, bicarbonate 33 mEq/L, and plasma renin activity suppressed at 0.3 ng/mL/hr. Serum chloride is 94 mEq/L. She denies vomiting or diarrhea. Which acid-base disorder is most likely present?
- A)Respiratory acidosis
- B)Respiratory alkalosis
- C)Nonanion gap metabolic acidosis
- D)Metabolic alkalosisGABARITO
- E)Anion gap metabolic acidosis
Explicação
Primary hyperaldosteronism increases sodium reabsorption and promotes potassium and hydrogen ion secretion in the collecting duct, producing hypokalemia and metabolic alkalosis. The suppressed renin level supports autonomous aldosterone excess. Ver explicação completa e trilha adaptativa →