为弄清产妇吸氧对胎儿血氧情况的影响,对妊娠38～39周无宫缩和无合并症的36名孕妇在脊髓阻滞麻醉下作选择性剖腹产,分为三组,每组12人.第一组为不给氧组;第二组给氧37～70分钟;第三组给氧123～170分钟.麻醉前三组产妇在手术台上均取右侧卧位,麻醉后将手术台向左方倾斜15度,并使骨盆轻度抬高开始手术.第二组经鼻给氧量为 In order to find out the impact of maternal oxygen on the fetus’s blood oxygen, 36 pregnant women with no contractions and no complications during 38-39 weeks of gestation were selected for caesarean section under spinal anesthesia, and divided into three groups of 12 The first group of oxygen-free group; the second group of oxygen 37 to 70 minutes; the third group of oxygen 123 to 170 minutes before anesthesia three groups of women on the operating table were taken right lateral position after anesthesia Operating table tilted to the left 15 degrees, and the pelvis slightly elevated surgery began. The second group of nasal oxygen was