Ounsted M, Scott A
Acta Obstet Gynecol Scand. 1982;61(4):367-71.
Data on 293 small-for-dates (SFD), 274 average-for-dates (AFD) and 338 large-for-dates (LFD) pregnancies are analyzed. 60.7% mothers in the SFD group smoked compared with AFD 29.2% and LFD 15.7%. Mean maternal height, weight and weight gain was lowest in the SFD group and highest in the LFD group. The mean weight-for-height index was the same in the SFD and AFD groups and higher in the LFD group. Within each group no differences were found between smokers and non-smokers for height, weight and weight-for-height indices. In the AFD group net pregnancy weight gain was higher for smokers than non-smokers. Feto-placental ratios were similar in all three groups and no differences were found between smokers and non-smokers. More infarcted placentas were found in the SFD group, but the proportions for smokers and non-smokers were alike. The incidence of bleeding during pregnancy and pre-eclampsia was the same for all groups, and between smokers and non-smokers. Hypertension during pregnancy occurred more often in the SFD group, and was more prevalent amongst non-smokers than smokers. The reduction in birthweight of infants born to smoking mothers appear to be a direct effect.
对293例小于胎龄儿（SFD）、274例适于胎龄儿（AFD）和338例大于胎龄儿（LFD）妊娠的数据进行了分析。SFD组中60.7%的母亲吸烟，而AFD组为29.2%，LFD组为15.7%。SFD组母亲的平均身高、体重和体重增加量最低，LFD组最高。SFD组和AFD组的平均身高体重指数相同，LFD组更高。在每组中，吸烟者和非吸烟者在身高、体重和身高体重指数方面没有差异。在AFD组中，吸烟者的净妊娠体重增加高于非吸烟者。三组的胎儿-胎盘比值相似，吸烟者和非吸烟者之间没有差异。SFD组发现更多梗死胎盘，但吸烟者和非吸烟者的比例相似。所有组以及吸烟者和非吸烟者之间妊娠期间出血和先兆子痫的发生率相同。妊娠高血压在SFD组中更常见，在非吸烟者中比吸烟者中更普遍。吸烟母亲所生婴儿出生体重的降低似乎是一种直接影响。
