The MFMU Cesarean Registry: Impact of fetal size on trial of labor success for patients with previous cesarean for dystocia

Alan M. Peaceman; Rebecca Gersnoviez; Mark B. Landon; Catherine Y. Spong; Kenneth J. Leveno; Michael W. Varner; Dwight J. Rouse; Atef H. Moawad; Steve N. Caritis; Margaret Harper; Ronald J. Wapner; Yoram Sorokin; Menachem Miodovnik; Marshall Carpenter; Mary J. O'Sullivan; Baha M. Sibai; Oded Langer; John M. Thorp; Susan M. Ramin; Brian M. Mercer

doi:10.1016/j.ajog.2006.06.003

The MFMU Cesarean Registry: Impact of fetal size on trial of labor success for patients with previous cesarean for dystocia

Alan M. Peaceman, Rebecca Gersnoviez, Mark B. Landon, Catherine Y. Spong, Kenneth J. Leveno, Michael W. Varner, Dwight J. Rouse, Atef H. Moawad, Steve N. Caritis, Margaret Harper, Ronald J. Wapner, Yoram Sorokin, Menachem Miodovnik, Marshall Carpenter, Mary J. O'Sullivan, Baha M. Sibai, Oded Langer, John M. Thorp, Susan M. Ramin, Brian M. Mercer

Research output: Contribution to journal › Article › peer-review

45 Scopus citations

Abstract

Objective: The purpose of this study was to determine the influence of change in infant birth weight between pregnancies on the outcome of a trial of labor for women whose first cesarean delivery was performed for dystocia. Study design: Secondary analysis of 7081 patients with 1 previous cesarean delivery and no other deliveries after 20 weeks' gestation, undergoing a trial of labor with a singleton gestation. Cases were classified as dystocia if the listed indication for the cesarean delivery in the first pregnancy was failed induction, cephalo-pelvic disproportion, failure to progress, or failed forceps or vacuum. Outcomes of the trial of labor were correlated with fetal size relative to birth weight in the initial pregnancy for those women whose initial cesarean delivery was for dystocia and those with other indications. Results: For the cohort being studied (n = 7081), dystocia was the indication for the first cesarean delivery for 3182 (44.9%). Trial of labor resulted in vaginal delivery for 54% of patients whose first cesarean delivery was performed for dystocia, compared with 67% for those with other indications (P < .01). For those whose first cesarean delivery was for dystocia, trial of labor success was correlated with birth weight differences between the pregnancies, with only 38% delivering vaginally if the trial of labor birth weight exceeded the initial pregnancy birth weight by more than 500 g. Using logistic regression and adjusting for other potential confounding factors, the odds of success decreased by 3.8% for each increase of 100 g in birth weight in the trial of labor relative to the first birth weight. Conclusion: For women with previous cesarean delivery for dystocia, increasing birth weight in the subsequent trial of labor relative to the first birth weight diminishes the chances of successful vaginal delivery.

Original language	English (US)
Pages (from-to)	1127-1131
Number of pages	5
Journal	American journal of obstetrics and gynecology
Volume	195
Issue number	4
DOIs	https://doi.org/10.1016/j.ajog.2006.06.003
State	Published - Oct 2006

Keywords

Birth weight
Cesarean delivery
Dystocia
Vaginal birth after cesarean

ASJC Scopus subject areas

Obstetrics and Gynecology

Access to Document

10.1016/j.ajog.2006.06.003

Cite this

Peaceman, A. M., Gersnoviez, R., Landon, M. B., Spong, C. Y., Leveno, K. J., Varner, M. W., Rouse, D. J., Moawad, A. H., Caritis, S. N., Harper, M., Wapner, R. J., Sorokin, Y., Miodovnik, M., Carpenter, M., O'Sullivan, M. J., Sibai, B. M., Langer, O., Thorp, J. M., Ramin, S. M., & Mercer, B. M. (2006). The MFMU Cesarean Registry: Impact of fetal size on trial of labor success for patients with previous cesarean for dystocia. American journal of obstetrics and gynecology, 195(4), 1127-1131. https://doi.org/10.1016/j.ajog.2006.06.003

Peaceman, AM, Gersnoviez, R, Landon, MB, Spong, CY, Leveno, KJ, Varner, MW, Rouse, DJ, Moawad, AH, Caritis, SN, Harper, M, Wapner, RJ, Sorokin, Y, Miodovnik, M, Carpenter, M, O'Sullivan, MJ, Sibai, BM, Langer, O, Thorp, JM, Ramin, SM & Mercer, BM 2006, 'The MFMU Cesarean Registry: Impact of fetal size on trial of labor success for patients with previous cesarean for dystocia', American journal of obstetrics and gynecology, vol. 195, no. 4, pp. 1127-1131. https://doi.org/10.1016/j.ajog.2006.06.003

@article{cdc6375774a94526be1faccac6d7efaf,

title = "The MFMU Cesarean Registry: Impact of fetal size on trial of labor success for patients with previous cesarean for dystocia",

abstract = "Objective: The purpose of this study was to determine the influence of change in infant birth weight between pregnancies on the outcome of a trial of labor for women whose first cesarean delivery was performed for dystocia. Study design: Secondary analysis of 7081 patients with 1 previous cesarean delivery and no other deliveries after 20 weeks' gestation, undergoing a trial of labor with a singleton gestation. Cases were classified as dystocia if the listed indication for the cesarean delivery in the first pregnancy was failed induction, cephalo-pelvic disproportion, failure to progress, or failed forceps or vacuum. Outcomes of the trial of labor were correlated with fetal size relative to birth weight in the initial pregnancy for those women whose initial cesarean delivery was for dystocia and those with other indications. Results: For the cohort being studied (n = 7081), dystocia was the indication for the first cesarean delivery for 3182 (44.9%). Trial of labor resulted in vaginal delivery for 54% of patients whose first cesarean delivery was performed for dystocia, compared with 67% for those with other indications (P < .01). For those whose first cesarean delivery was for dystocia, trial of labor success was correlated with birth weight differences between the pregnancies, with only 38% delivering vaginally if the trial of labor birth weight exceeded the initial pregnancy birth weight by more than 500 g. Using logistic regression and adjusting for other potential confounding factors, the odds of success decreased by 3.8% for each increase of 100 g in birth weight in the trial of labor relative to the first birth weight. Conclusion: For women with previous cesarean delivery for dystocia, increasing birth weight in the subsequent trial of labor relative to the first birth weight diminishes the chances of successful vaginal delivery.",

keywords = "Birth weight, Cesarean delivery, Dystocia, Vaginal birth after cesarean",

author = "Peaceman, {Alan M.} and Rebecca Gersnoviez and Landon, {Mark B.} and Spong, {Catherine Y.} and Leveno, {Kenneth J.} and Varner, {Michael W.} and Rouse, {Dwight J.} and Moawad, {Atef H.} and Caritis, {Steve N.} and Margaret Harper and Wapner, {Ronald J.} and Yoram Sorokin and Menachem Miodovnik and Marshall Carpenter and O'Sullivan, {Mary J.} and Sibai, {Baha M.} and Oded Langer and Thorp, {John M.} and Ramin, {Susan M.} and Mercer, {Brian M.}",

note = "Funding Information: Supported by grants from the National Institute of Child Health and Human Development (HD21410, HD21414, HD27860, HD27861, HD27869, HD27905, HD27915, HD27917, HD34116, HD34122, HD34136, HD34208, HD34210, HD40500, HD40485, HD40544, HD40545, HD40560, HD40512, and HD36801). ",

year = "2006",

month = oct,

doi = "10.1016/j.ajog.2006.06.003",

language = "English (US)",

volume = "195",

pages = "1127--1131",

journal = "American journal of obstetrics and gynecology",

issn = "0002-9378",

publisher = "Elsevier Inc.",

number = "4",

}

TY - JOUR

T1 - The MFMU Cesarean Registry

T2 - Impact of fetal size on trial of labor success for patients with previous cesarean for dystocia

AU - Peaceman, Alan M.

AU - Gersnoviez, Rebecca

AU - Landon, Mark B.

AU - Spong, Catherine Y.

AU - Leveno, Kenneth J.

AU - Varner, Michael W.

AU - Rouse, Dwight J.

AU - Moawad, Atef H.

AU - Caritis, Steve N.

AU - Harper, Margaret

AU - Wapner, Ronald J.

AU - Sorokin, Yoram

AU - Miodovnik, Menachem

AU - Carpenter, Marshall

AU - O'Sullivan, Mary J.

AU - Sibai, Baha M.

AU - Langer, Oded

AU - Thorp, John M.

AU - Ramin, Susan M.

AU - Mercer, Brian M.

N1 - Funding Information: Supported by grants from the National Institute of Child Health and Human Development (HD21410, HD21414, HD27860, HD27861, HD27869, HD27905, HD27915, HD27917, HD34116, HD34122, HD34136, HD34208, HD34210, HD40500, HD40485, HD40544, HD40545, HD40560, HD40512, and HD36801).

PY - 2006/10

Y1 - 2006/10

N2 - Objective: The purpose of this study was to determine the influence of change in infant birth weight between pregnancies on the outcome of a trial of labor for women whose first cesarean delivery was performed for dystocia. Study design: Secondary analysis of 7081 patients with 1 previous cesarean delivery and no other deliveries after 20 weeks' gestation, undergoing a trial of labor with a singleton gestation. Cases were classified as dystocia if the listed indication for the cesarean delivery in the first pregnancy was failed induction, cephalo-pelvic disproportion, failure to progress, or failed forceps or vacuum. Outcomes of the trial of labor were correlated with fetal size relative to birth weight in the initial pregnancy for those women whose initial cesarean delivery was for dystocia and those with other indications. Results: For the cohort being studied (n = 7081), dystocia was the indication for the first cesarean delivery for 3182 (44.9%). Trial of labor resulted in vaginal delivery for 54% of patients whose first cesarean delivery was performed for dystocia, compared with 67% for those with other indications (P < .01). For those whose first cesarean delivery was for dystocia, trial of labor success was correlated with birth weight differences between the pregnancies, with only 38% delivering vaginally if the trial of labor birth weight exceeded the initial pregnancy birth weight by more than 500 g. Using logistic regression and adjusting for other potential confounding factors, the odds of success decreased by 3.8% for each increase of 100 g in birth weight in the trial of labor relative to the first birth weight. Conclusion: For women with previous cesarean delivery for dystocia, increasing birth weight in the subsequent trial of labor relative to the first birth weight diminishes the chances of successful vaginal delivery.

AB - Objective: The purpose of this study was to determine the influence of change in infant birth weight between pregnancies on the outcome of a trial of labor for women whose first cesarean delivery was performed for dystocia. Study design: Secondary analysis of 7081 patients with 1 previous cesarean delivery and no other deliveries after 20 weeks' gestation, undergoing a trial of labor with a singleton gestation. Cases were classified as dystocia if the listed indication for the cesarean delivery in the first pregnancy was failed induction, cephalo-pelvic disproportion, failure to progress, or failed forceps or vacuum. Outcomes of the trial of labor were correlated with fetal size relative to birth weight in the initial pregnancy for those women whose initial cesarean delivery was for dystocia and those with other indications. Results: For the cohort being studied (n = 7081), dystocia was the indication for the first cesarean delivery for 3182 (44.9%). Trial of labor resulted in vaginal delivery for 54% of patients whose first cesarean delivery was performed for dystocia, compared with 67% for those with other indications (P < .01). For those whose first cesarean delivery was for dystocia, trial of labor success was correlated with birth weight differences between the pregnancies, with only 38% delivering vaginally if the trial of labor birth weight exceeded the initial pregnancy birth weight by more than 500 g. Using logistic regression and adjusting for other potential confounding factors, the odds of success decreased by 3.8% for each increase of 100 g in birth weight in the trial of labor relative to the first birth weight. Conclusion: For women with previous cesarean delivery for dystocia, increasing birth weight in the subsequent trial of labor relative to the first birth weight diminishes the chances of successful vaginal delivery.

KW - Birth weight

KW - Cesarean delivery

KW - Dystocia

KW - Vaginal birth after cesarean

UR - http://www.scopus.com/inward/record.url?scp=33748804215&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33748804215&partnerID=8YFLogxK

U2 - 10.1016/j.ajog.2006.06.003

DO - 10.1016/j.ajog.2006.06.003

M3 - Article

C2 - 17000245

AN - SCOPUS:33748804215

SN - 0002-9378

VL - 195

SP - 1127

EP - 1131

JO - American journal of obstetrics and gynecology

JF - American journal of obstetrics and gynecology

IS - 4

ER -