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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Two days after an uncomplicated laparoscopic abdominal hernia repair, a 46-year-old man is evaluated for palpitations. He has a history of hypertension, type 2 diabetes mellitus, and a ventricular septal defect that closed spontaneously as a child. His father has coronary artery disease. Prior to admission, his only medications were hydrochlorothiazide and metformin. He currently also takes hydromorphone/acetaminophen for mild postoperative pain. He is 180 cm (5 ft 11 in) tall and weighs 100 kg (220 lb); BMI is 30.7 kg/m2. His temperature is 37.0°C (99°F), blood pressure is 139/85 mmHg, pulse is 75/min and irregular, and respirations are 14/min. Cardiopulmonary examination shows a normal S1 and S2 without murmurs and clear lung fields. The abdominal incisions are clean, dry, and intact. There is mild tenderness to palpation over the lower quadrants. An electrocardiogram is obtained and shown below. Which of the following is the most likely cause of this patient's ECG findings?
assistant
Hypokalemia