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肺栓塞是指内源或外源性栓子堵塞肺动脉及其分支引起肺循环障碍的临床和病理生理综合征。常见的栓子是血栓,其余为少见的新生物细胞、脂肪滴、气泡、静脉输入的药物颗粒甚至导管头端引起的肺血管阻断。血栓栓子主要来源深静脉血栓形成。据欧美国家的初步流行病学显示,其发病率
Pulmonary embolism refers to the clinical and pathophysiological syndromes of endogenous or exogenous emboli blocking the pulmonary artery and its branches that cause impediment to pulmonary circulation. Common emboli are thrombi and the rest are rare neoplasias, fat droplets, bubbles, drug particles infused intravenously, and even pulmonary vasoconstriction caused by the catheter tip. The main source of thromboembolism is deep venous thrombosis. According to preliminary epidemiological studies in Europe and the United States showed that the incidence