肺栓塞,顾名思义是肺动脉被各种来源的栓子楔入,在人体中主要是血栓。其中大部分来源于深静脉血栓,后者从静脉壁脱落后通过右心房、右心室进入肺动脉,最后楔入适当口径的肺动脉血管中。由于正常肺动脉被阻断,气体交换及维持心血管系统的正常功能被破坏,从而产生一系列肺功能障碍和心血管系统及体液平衡等的异常变化。它是一种常见疾病,但是由于这种疾病可以在 Pulmonary embolism, as the name implies, is that the pulmonary arteries are wedged with emboli from a variety of sources, mainly thrombi in the human body. Most of them come from deep venous thrombosis, the latter after falling from the vein wall through the right atrium, right ventricle into the pulmonary artery, and finally wedged into the appropriate diameter of the pulmonary artery. Due to the normal pulmonary artery is blocked, the gas exchange and maintain the normal function of the cardiovascular system is destroyed, resulting in a series of abnormal lung dysfunction and cardiovascular system and fluid balance and other abnormal changes. It is a common disease, but due to this disease can be