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Created on : 19 Jan 2006
Modified on : 01 Dec 2007

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Bibliographical entry (without author) :

Early amniotomy increases the frequency of fetal heart rate abnormalities. BRITISH JOURNAL OF OBSTETRICS AND GYNAECOLOGY 104 (5): 548-553 MAY 1997

Author(s) :

Goffinet F, Fraser W, Marcoux S, Breart G, Moutquin JM, Daris M, Armson BA, PhalenKelly K, Verrault JP, Paradis G, Poulin G, Moreau L, Okun N, Nimrod C, Villeneuve M, Joshi AK, Nault C, Cohen H, Weston J, Doran T, Jordan A, Bernstein P, Carroll J, Pierce C, Bayer L, Kang A, Bottoms S, Norman G, Galerneau F, Jansen P

Year of publication :

1997

URL(s) :

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=…

Résumé (français)  :

Abstract (English)  :

OBJECTIVES: To determine whether early amniotomy, when practised as an isolated intervention, increases the hourly rate of fetal heart rate record abnormalities.

DESIGN: This is a secondary analysis of the results of a multicentre randomised trial of early vel sus late amniotomy in labour.

SETTING: Secondary and tertiary level teaching hospitals.

INTERVENTION: Early amniotomy versus an attempt to conserve the amniotic membranes.

MAIN OUTCOME MEASURES: The hourly rates of early, mild variable, severe variable and late decelerations; caesarean section rates.

RESULTS: Severe variable decelerations, when classified as categorical events (greater than or equal to 1/h to 2/h, greater than or equal to 2/h to < 4/h, greater than or equal to 4/h), were more frequent in the amniotomy group (chi(2) for trend = 5.7, P = 0.017). The mean hourly rates of severe variable and late fetal heart rate decelerations were increased in the amniotomy group (severe variable: amniotomy group 1.4/h, control 0.7/h, P = 0.021; late: amniotomy group 3.3/h, control 2.3/h, P = 0.011). Although the overall rate of caesarean was similar in the two groups (OR 1.2; 95% CI 0.8-1.8), there was an increase in caesarean section for fetal distress (OR 2.3; 95% CI 1.1-4.5) associated with amniotomy.

CONCLUSION: Our data suggest that early amniotomy increases the hourly rate of severe variable fetal heart rate decelerations without evidence of an adverse effect on neonatal outcome, In settings where the diagnosis of fetal compromise is based primarily on electronic monitoring, caesarean section for fetal distress may be increased by early amniotomy.

Sumário (português)  :

Resumen (español)  :

Comments :

Argument (français) :

L’amniotomie précoce augmente le taux horaire de décélérations cardiaques foetales sévères. La césarienne pour cause de détresse foetale pourrait être augmentée due a une amniotomie précoce.

Early amniotomy increases the hourly rate of severe variable fetal heart rate decelerations. Caesarean section for fetal distress may be increased by early amniotomy.

Argument (English):

Argumento (português):

Argumento (español):

Keywords :

➡ c-section/caesarean ; amniotomy ; active management of labor ; fetal distress

Author of this record :

Sandrine Péneau — 19 Jan 2006