Pulmonary Infarction: In the Beginning: The Natural History of Pulmonary Infarction

摘要

The temporal sequence of events that occurs following pulmonary thromboembolism is incomplete. It is presumed that obstruction of large pulmonary arteries can cause the abrupt and nearly simultaneous onset of dyspnea or syncope due to the hemodynamic and arterial blood gas changes resulting from vessel occlusion. In contrast, occlusion of segmental or subsegmental arteries may cause no immediate hemodynamic or blood gas changes great enough to cause symptoms.