First trimester ultrasound screening is effective in reducing postterm labor induction rates: A randomized controlled trial - 25/08/11
, Joan M.G Crane, MD b, Patrick O'Shea, MD b, Joanne Lacelle, MD b, Donna Hutchens, BN b, Joshua A Copel, MD c
Reprint requests: Kelly A. Bennett, MD, Department of Obstetrics and Gynecology, Vanderbilt University, B1100 Medical Center North, Nashville, TN 37212.Abstract |
Objective |
This study was designed to test the null hypothesis that first trimester ultrasound crown-rump length measurement for gestational age determination will result in no difference in the rate of induction of labor for postterm pregnancy, compared with second trimester biometry alone.
Study design |
Two hundred eighteen women were randomly assigned to receive either first trimester ultrasound screening or second trimester ultrasound screening to establish the expected date of confinement. Sample size was calculated by using a 2-tailed ⍺=.05 and power (1-β)=80%. Data were analyzed with χ2 and Fisher exact tests.
Results |
Of 104 women randomly assigned to the first trimester screening group, 41.3% had their gestational age adjusted on the basis of the crown-rump length measurement. Of 92 women randomly assigned to the second trimester screening group, 10.9% were corrected as a result of biometry (P < .001, relative risk=0.26, 95% CI=0.15-0.46). Five women in the first trimester screening group and 12 women in the second trimester screening group had labor induced for postterm pregnancy (P=0.04, relative risk=0.37, 95% CI=0.14-0.96).
Conclusion |
The application of a program of first trimester ultrasound screening to a low-risk obstetric population results in a significant reduction in the rate of labor induction for postterm pregnancy.
Le texte complet de cet article est disponible en PDF.Keywords : Ultrasound, Postterm, Induction
Plan
 | Presented at the Twenty-third Annual Meeting of the Society of Maternal Fetal Medicine, Oral Concurrent Session C, San Francisco, Calif, February 3-8, 2003. (Awarded Best Paper). |
Vol 190 - N° 4
P. 1077-1081 - avril 2004 Retour au numéro
Article précédent
- Tetanus and diphtheria immunity among females in the United States: Are recommendations being followed?
- Deanna M Kruszon-Moran, Geraldine M McQuillan, Susan Y Chu
- Experimental intrauterine infection with Prevotella bivia in New Zealand White rabbits
- Ronald S Gibbs, Robert S McDuffie, Mirjam Kunze, Jane M Barr, Douglas M Wolf, Chun-I Sze, Robert Shikes, Michael P Sherman
Bienvenue sur EM-consulte, la référence des professionnels de santé.
L’accès au texte intégral de cet article nécessite un abonnement.
Déjà abonné à cette revue ?