Cardiomyopathies Quiz: Ace Your Exams
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A 68-year-old woman comes to the clinic complaining of dyspnea on exertion, fatigue, and chest pain. She also states that she has to use 3 pillows at night when she sleeps. Past medical history includes carcinoma of the breast, for which she received surgery and adjuvant radiation therapy but no chemotherapy. Temperature is 37.2°C (98.9°F), pulse is 80/min, respirations are 20/min, and blood pressure is 100/68. Physical exam shows jugular venous distension and bilateral leg edema. Cardiac auscultation shows S3 and S4 heart sounds. Electrocardiogram (ECG) shows low amplitude signals. Which of the following is the most likely cause of this patient’s disease?


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