What is the presentation of acute pulmonary infarction?

Updated: Sep 18, 2020
  • Author: Daniel R Ouellette, MD, FCCP; Chief Editor: Zab Mosenifar, MD, FACP, FCCP  more...
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Approximately 10% of patients have peripheral occlusion of a pulmonary artery, causing parenchymal infarction. These patients present with acute onset of pleuritic chest pain, breathlessness, and hemoptysis. Although the chest pain may be clinically indistinguishable from ischemic myocardial pain, normal ECG findings and no response to nitroglycerin rules out myocardial pain. Patients with acute pulmonary infarction have decreased excursion of the involved hemithorax, palpable or audible pleural friction rub, and even localized tenderness. Signs of pleural effusion, such as dullness to percussion and diminished breath sounds, may be present.

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