选择健康单胎初产妇１５例，用０．２５％布比卡因作连续硬膜外镇痛分娩，并与同期入院条件相仿不用麻醉镇痛药的２８例初产妇对照，在分娩过程中用超声心动图（ＵＣＧ）对两组产妇进行观察。结果提示：用麻醉药能控制产痛、减慢心率、降低心输出量，从而减轻正常产妇在分娩过程中的心脏负荷，降低耗氧量，改善心肌代谢，保证了对周围组织及胎盘的血流灌注。对合并有心功能不全的高危产妇有更重要的临床意义。 Fifteen healthy singleton primiparous women were selected for continuous epidural analgesia delivery with 0.25% bupivacaine and 28 primiparous women without anesthetic analgesia were assigned to the same hospitalization conditions during the same period of delivery Echocardiography (UCG) Two groups of mothers were observed. The results suggest that anesthesia can be used to control the pain, slow down the heart rate and reduce the cardiac output, thereby reducing the normal mother’s heart during delivery labor load, reduce oxygen consumption and improve myocardial metabolism, to ensure that the surrounding tissue and placental blood Flow perfusion. The merger of cardiac insufficiency of high-risk mothers have more important clinical significance.