利用Smiths公式预测有剖宫产史孕妇再次妊娠分娩方式的初步探索

摘要

目的:探讨Smiths公式用于有剖宫产(CS)史的孕妇再次妊娠时预测CS风险的意义.方法:对我院63例有CS史并再次妊娠的经产妇利用Smiths公式对不同分娩方式预测其风险系数并探讨Smiths公式的预测值.结果:63例患者中,按公式计算出CS风险预测值<40%的患者阴道试产成功率达100%,CS风险预测值>40%者有37.5%阴道试产失败.结论:利用Smith公式,取40%为临界点,对CS风险预测值>40%的既往有cS史的孕妇行阴道分娩时需慎重.%Objective:To measure the value of Smith's prediction model in the prediction of vaginal birth after caesarean (VBAC).Methods: Smith's prediction model was used to measure the risk of caesarean section (CS) in 63 multiparas who had a CS in their preceding pregnancy.Results: In 63 multiparas, the successful vaginal birth rate of patients with low predictive risk ( ＜40％ ) according to the formula was 100％.In patients with high predictive risk( ＞40％ ), 37.5％ had an emergency CS.Conclusions: Using 40％ as cutoff value by the Smith's prediction model, gravida has VBAC should be carefully monitored with high predictive risk( ＞40％ ).