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对妊高征合并胎儿宫内发育迟缓（ＩＵＧＲ）１１例、ＩＵＧＲ１３例、正常妊娠分娩１５例患者的胎盘组织进行了形态测定及观察。结果表明：ＩＵＧＲ患者胎盘中代表胎儿循环的三级绒毛干动脉总数、正常动脉比例数及百分比明显低于对照组（Ｐ＜０．０１）。代表母儿交换能力的血管合体膜（ＶＳＭ）百分比及绒毛间隙容积百分比也明显低于对照组（Ｐ＜０．０５）。而标志着胎盘缺氧的合体结节绒毛百分比则显著增高。提示：有ＩＵＧＲ时胎儿循环阻力升高，灌流血量减少是影响胎儿发育的重要原因。
11 cases of PIH with intrauterine growth retardation (IUGR), 13 cases of IUGR, and 15 cases of normal pregnancy were analyzed for placental morphology and observation. The results showed that the total number of grade 3 villi in the placenta, and the percentage and percentage of normal arteries in the placenta of IUGR patients were significantly lower than those in the control group (P <0.01). The percentage of vasomotor membrane (VSM) and villus space volume representing mother-child exchange capacity was also significantly lower than that of the control group (P <0.05). The percentage of co-ordinated nodules that marked hypoxia in the placenta was significantly higher. Tip: IUGR when the fetus with increased circulatory resistance, reduced perfusion flow is an important factor affecting fetal development.