Defining uterine tachysystole: how much is too much?

被引:27
作者
Stewart, Robert D. [1 ]
Bleich, April T. [1 ]
Lo, Julie Y. [1 ]
Alexander, James M. [1 ]
McIntire, Donald D. [1 ]
Leveno, Kenneth J. [1 ]
机构
[1] Univ Texas SW Med Ctr Dallas, Dept Obstet & Gynecol, Dallas, TX 75390 USA
关键词
abnormal labor; misoprostol; uterine hyperstimulation; uterine tachysystole; OXYGEN-SATURATION; FETAL; CONTRACTIONS; LABOR;
D O I
10.1016/j.ajog.2012.07.032
中图分类号
R71 [妇产科学];
学科分类号
100211 ;
摘要
OBJECTIVE: We sought to determine if uterine tachysystole, >= 6 contractions per 10 minutes, within the first 4 hours of labor induction, is associated with adverse infant outcomes. STUDY DESIGN: This was a prospective cohort study of 584 women >= 37 weeks' gestation undergoing induction of labor with 100 mu g of oral misoprostol. Fetal heart rate tracings were analyzed for contractions per 10 minutes during the initial 4 hours after misoprostol administration. Patients were analyzed based on the maximum number of contractions per 10 minutes. Infant condition at birth was assessed using the fetal vulnerability composite. RESULTS: Adverse infant outcomes showed no association with increasing number of contractions per 10 minutes. Six or more contractions in 10 minutes were significantly associated with fetal heart rate decelerations (P <= .001). Analysis was performed using the maximum number of contractions per 30 minutes with similar results. CONCLUSION: Uterine tachysystole, as currently defined, when occurring remote from delivery is not associated with adverse infant outcomes.
引用
收藏
页码:290.e1 / 290.e6
页数:6
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