结果：（1）产钳助产易导致产道血肿；
Results:(1)Application of obstetric forceps might result in hematoma;
剖宫产占难产分娩的比例逐年增高，同期产钳助产占难产分娩的比例逐年下降；
The ratio of cesarean section birth to dystocia delivery increased year by year, with reverse trend of forceps delivery.
分娩方式中的产钳助产产妇抑郁症状发生率明显高于剖宫产及自然分娩组（P＜0．01）。
The depression incidence rate of puerpera in obstetric forceps delivery was obvious higher than that in hysterotokotomy or that in normal labor(P<0.01).
斯梅利改良了产钳，并写下了实用的助产术手册。
Smellie improved the forceps and wrote a bestselling practical midwifery handbook.
斯梅利改良了产钳，并写下了实用的助产术手册。
Smellie improved the forceps and wrote a bestselling practical midwifery handbook.
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