产程延长

剖宫产出血的主要原因是宫缩乏力、胎盘因素、产程延长及切口撕裂等。

Bleeding of cesarean section is usually due to uterus atone , placental factors , prolonged labor and lacerated section .

RⅡ，B组的第二产程延长161%，183%，RⅠ组无产程延长。

The second birth process of the R ⅱ and B groups was prolonged by 16.1 % and 18.3 % , while that of R ⅰ group was not prolonged .

人流史、第三产程延长增加晚期产后出血的发生率（P<0.01）。

History of artificial abortion and prolongation of placental stage also can increase the incidence of the disease ( P < 0.01 ) .

结果对照组发生产力异常（宫缩乏力、产程延长、产后出血）明显高于干预组和心理正常组（P<005）。

Results The rate of abnormal puerperal force , showed significant difference , compared with control group and psychological normal group ( P < 0.05 ) .

硬膜外阵痛可能使产程延长，第二产程进展困难，因为孕妇身体的下半部分失去了感觉。

Epidural pain relief may also slow labor and may make the pushing stage longer and more difficult because women lose sensation in their lower body .

主要临床表现为子宫收缩力弱，产程延长，对母婴均有不良影响，易导致发生胎儿宫内窘迫，手术产率增高，易引起产后出血，产褥期并发症亦增多。

Mainly manifested as weak contraction of uterus and prolonged process of labor , it it liable to cause fetal distress , leading to cesarean section , postpartum hemorrhage , and puerperous complications .

第三产程延长致产后出血发生率为40.00%（22/55），与对照组16.22%（36/220）相比有显著差异。

The hemorrhage rate caused by the extension of the third stage of labor was 40.00 % ( 22 / 55 ), while the control group 16.22 % ( 36 / 220 ) .

产程潜伏期延长105例分析

Analysis on 105 cases with the lengthened labor latent period

结果：11例中以产程停滞或延长作为剖宫产指征7例（63%）。

Results : Of the 11 cases , 7 of the cesarean section indications were prolonged labor ( 63 % ) .

滞产、第二产程延长者新生儿窒息率经统计学处理明显高于正常产程与第二产程正常的新生儿窒息率（P0.01）。

And compared with natural process of labor , in presence of prolonged labor and prolonged second stage of labor , the incidence rate of neonatal asphyxia rate increased significantly ( P0.01 ) .

危险因素依次为手术产、巨大儿、产程延长、胎盘胎膜残留以及各种妊娠合并症。

The risk factors were the caesarean delivery , the large infant , the extension of labor cause , the residue of placenta or embryolema and all kinds of pregnancy complications .

结论经产妇的产程明显比初产妇短，但随着本次分娩距前次分娩时间的延长，产程也逐渐延长。

Conclusion The time of stages of labor of multipara is shorter obviously than that of primipara .