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Course: A Wide Wide QRS

CME Credits: 1.00

Released: 2023-11-27

A female patient in her late 70s presented to the emergency department with shortness of breath and generalized weakness. She had a history of coronary artery bypass surgery, ischemic cardiomyopathy with an ejection fraction of 15%, a dual-chamber defibrillator, paroxysmal atrial fibrillation, and kidney failure treated with hemodialysis. She was taking amiodarone, apixaban, metoprolol succinate, atorvastatin, ferrous sulfate, and sevelamer carbonate. The physical examination showed an elderly patient in mild distress. Blood pressure was 80/50 mm Hg and pulse was 78 beats/min. Neck veins were distended. Heart sounds were distant. Rales were heard in both bases. Mild bilateral lower extremity edema was noted. Troponin level was normal. Brain-type natriuretic peptide was 453 pg/mL (normal level, <100 pg/mL; to convert to ng/L, multiply by 1). Other laboratory findings showed a potassium of 6.8 mEq/L (normal range: 3.5-5 mEq/L; to convert to mmol/L, multiply by 1) and a PH level of 7.17. An electrocardiogram (ECG) ( A) was done.


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