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3 休克对各主要器官的影响3.1 对心脏的影响 (1)因心输出量降低,血压下降,冠状动脉供血不好,心功能障碍,使心输出量进一步下降而形成恶性循环。平均血压与冠状动脉血流量的关系大致如下:平均血压(MBP)为100mmHg时,每100g心肌/分,冠状动脉血流量约为100ml,MBP60rnmHg,为80ml.而MBP为30mmHg时,冠状动脉则无血流通过。对抢救休克,如血压过低,千方百计先提高血压,对抢救能否成功是关键问题。(2)在感染中毒性休克时,可发生中毒性心肌炎。(3)心肌抑制因子,缓激肽等体液因素。(4)代谢性酸中毒,高血K~+。(5)心肌内微循环血栓。
3 shock on the main organs of the impact of 3.1 on the heart (1) due to decreased cardiac output, blood pressure, poor coronary blood supply, cardiac dysfunction, the cardiac output to further decline and the formation of a vicious cycle. The relationship between mean blood pressure and coronary blood flow was approximately as follows: Mean blood pressure (MBP) was 100 mmHg, coronary artery blood flow per 100 g of myocardium / minute was about 100 ml and MBP was 60 mmHg at 80 ml, while at MBP of 30 mmHg, Blood flow through. Rescue shock, such as low blood pressure, do everything possible to increase blood pressure, the success of the rescue is the key issue. (2) Toxic myocarditis can occur when toxic shock is infected. (3) myocardial inhibitors, bradykinin and other body fluid factors. (4) Metabolic acidosis, high blood K ~ +. (5) myocardial microcirculation thrombosis.