The most commonest cause of acute cor pulmonale is: (A) Pneumonia, (B) Pulmonary thromboembolism, (C) COPD, (D) primary spontaneous pneumothorax
Answer is B. Ref Harrison 19 th ed pg 1454 ,1505 The most commonest cause of acute cor pulmonale is pulmonary thromboembolism. The most common cause of chronic cor pulmonale is COPD.