论文部分内容阅读
心肌缺血是冠状动脉功能不全的主要后果,也是临床对冠心病处理的中心问题。急性缺血更是对患者健康以至生命的严重威胁。心肌缺血的基本发病原因是:(1)冠脉供血不足。常由冠脉阻塞引起,其次见于舒张压过低或舒张期过短的疾病。(2)心肌耗氧过高。多因心肌负荷过重使其代谢增强所致。影响冠脉血流的因素器官血流量是指单位时间内流经该器官的血量。冠脉血流量(CBF)约为85.0 ml分/100g心肌。在一定范围内其流量可通过机体的自我调节而保持相对的稳定。CBF主要受以下几
Myocardial ischemia is the main consequence of coronary insufficiency and is also a central issue in clinical treatment of coronary heart disease. Acute ischemia is a serious threat to the patient’s health and even life. The basic causes of myocardial ischemia are: (1) coronary insufficiency. Often caused by coronary occlusion, followed by diastolic blood pressure is too low or too short diastolic disease. (2) myocardial oxygen consumption is too high. More due to myocardial overload so that its metabolism increased. Factors that affect coronary blood flow Organ blood flow refers to the blood flow through the organ per unit time. Coronary flow (CBF) was approximately 85.0 ml points per 100 g of myocardium. In a certain range of its flow through the body’s self-regulation and maintain a relatively stable. CBF mainly by the following