Your patient has had hypertension for 10 years, a myocardial infarction 5 years ago, and now complains of dyspnea on exertion, cough, and 3-pillow orthopnea. Which of the following conditions is likely?
A. Right ventricular failure
B. Pulmonary embolism
C. Cor pulmonale
D. Left ventricular failure
ANS: D
Left ventricular failure is most commonly characterized by dyspnea on exertion, cough, fatigue, orthopnea, PND, cardiac enlargement, crackles, gallop rhythm, and pulmonary congestion. Right ventricular failure is commonly characterized by dependent edema, elevated venous pressure, hepatomegaly, and possibly ascites. Pulmonary embolism presents with shortness of breath and tachycardia. Cor pulmonale is a heart disorder that occurs because of lung disease. The lungs are dysfunctioning which causes hypoxia and reflex pulmonary artery vasoconstriction. The right ventricle has to eject blood into the pulmonary artery, however, there is high afterload to deal because of pulmonary vasoconstriction. The high workload against the right ventricle eventually causes the right ventricle to fail. This right ventricular failure because of lung disease is called cor pulmonale.
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