A 70-year-old woman with heart failure is admitted for dyspnea and volume overload. She is treated aggressively with intravenous loop diuretics. On hospital day 3, she reports muscle cramps and weakness. ECG shows flattened T waves and prominent U waves. Which of the following electrolyte abnormalities is the most likely cause of these findings?
- A)Hyperphosphatemia
- B)Hypermagnesemia
- C)Hyponatremia
- D)Hyperkalemia
- E)HypokalemiaGABARITO
Explicação
Loop diuretics increase urinary potassium loss, predisposing to hypokalemia which causes weakness, muscle cramps, flattened T waves, and prominent U waves. Ver explicação completa e trilha adaptativa →