A 65-year-old man with history of COPD experienced several episodes of feeling so lightheaded he thought he might pass out. When that feeling didn’t go away and he started having shortness of breath whenever he exerted himself, he went to the ED. He described additional symptoms of fatigue, cough, and sweating more than usual. His doctor noted pallor, tachycardia, hypotension, and peripheral leg edema during the exam.
Is it cor pulmonale, acute coronary syndrome, pulmonary embolism, or atrial myxoma?
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