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Defining uterine tachysystole: how much is too much?
MedLine Citation:
PMID:  22901710     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
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 μg 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.
Authors:
Robert D Stewart; April T Bleich; Julie Y Lo; James M Alexander; Donald D McIntire; Kenneth J Leveno
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-31
Journal Detail:
Title:  American journal of obstetrics and gynecology     Volume:  -     ISSN:  1097-6868     ISO Abbreviation:  Am. J. Obstet. Gynecol.     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-8-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370476     Medline TA:  Am J Obstet Gynecol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Mosby, Inc. All rights reserved.
Affiliation:
Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, TX.
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