Case Study 1 Mr. A, a 60-year-old plumber, presents to the emergency department, complaining of shortness of breath. He has experienced mild dyspnea on exertion for a few years. However, he noticed recently that the dyspnea has worsened, with its onset on minimal exertion and sometimes at rest. On direct questioning, he reveals a chronic
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HS2257: Pathophysiology & Pharmacology 1