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二十年前腰麻、硬膜外或全麻剖宫产测量心排出量用指示剂染料稀释法,因其对组织有损伤性不能频繁测量使用而受限,已为热稀释法取代。这两种方法测心排出量均需导管插入术,即有创性。限制了危重病人的应用,均不适于妊娠妇女。多普勒技术为无创性,测出的心排出量与热稀释法所测结果有关,已证明对妊娠与流产的病人有效,重要的是这种技术免去染料与热稀释技术固有的危险,可在妇女剖宫分娩后很快测出心排出量,并可比较不同麻醉方法的潜在作用。本文介绍用多普勒技术研究剖宫产术前与术后24小时妇女的心排出量,比较
Twenty years ago, spinal anesthesia, epidural or general anesthesia for cesarean delivery was measured with an indicator dye dilution method, which was limited by its ability to measure tissue damage frequently and was replaced by a thermal dilution method. Both methods of cardiac output need catheterization, which is invasive. Limit the use of critically ill patients are not suitable for pregnant women. Doppler technology is noninvasive, and measured cardiac output is related to the results of the thermodilution test, which has proven effective in patients with pregnancy and miscarriage. It is important that this technique dispense with the inherent risks of dye and thermodilution techniques, Cardiac output can be measured very soon after delivery of the cesarean section in women and the potential role of different anesthesia methods can be compared. This article describes the study of Doppler echocardiography before and 24 hours after cesarean delivery in women, compared