Anthropometric measurements as predictors of cephalopelvic disproportion

Can the diagnostic accuracy be improved?

Santosh J. Benjamin, Anjali B. Daniel, Asha Kamath, Vani Ramkumar

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Objective. We assessed the efficacy of maternal anthropometric measurements and clinical estimates of fetal weight in isolation and in combination as predictors of cephalopelvic disproportion (CPD). Design. Prospective cohort study. Setting. Tertiary care teaching hospital, two affiliated hospitals with facilities for conducting cesarean delivery and seven affiliated primary care facilities with no operation theaters. Sample. Primigravidae over 37 weeks' gestation attending these facilities during a 20-month period with a singleton pregnancy in vertex presentation. Methods. Several anthropometric measurements were taken in 249 primigravidae. Fetal weight was estimated. Differences in these measurements between the vaginal delivery and CPD groups were analyzed. The validity of these measurements in predicting CPD was analyzed by plotting receiver operating characteristic curves and by logistic regression analysis. Main outcome measure. Mode of delivery. Results. Maternal height, foot size, inter-trochanteric diameter and bis-acromial diameter showed the highest positive predictive values for CPD. Combining some maternal measurements with estimates of fetal weight increased predictive values modestly, which are likely to be greater if the estimates of fetal weight are close to the actual birth weight. Based on multivariate analysis the risk factors for CPD in our population were foot length ≤23cm, inter-trochanteric diameter a;circ30cm and estimated fetal weight ≤3 000g. Conclusions. Maternal anthropometric measurements can predict CPD to some extent. Combining maternal measurements with clinical estimates of fetal weight only enhances the predictive value to a relatively modest degree (positive predictive value 24%).

Original languageEnglish
Pages (from-to)122-127
Number of pages6
JournalActa Obstetricia et Gynecologica Scandinavica
Volume91
Issue number1
DOIs
Publication statusPublished - 01-2012

Fingerprint

Cephalopelvic Disproportion
Fetal Weight
Mothers
Foot
Pregnancy
Tertiary Healthcare
Birth Weight
ROC Curve
Teaching Hospitals
Primary Health Care
Cohort Studies
Multivariate Analysis
Logistic Models
Regression Analysis
Outcome Assessment (Health Care)
Prospective Studies

All Science Journal Classification (ASJC) codes

  • Obstetrics and Gynaecology

Cite this

@article{37a4132174b64179b73b64646feda74b,
title = "Anthropometric measurements as predictors of cephalopelvic disproportion: Can the diagnostic accuracy be improved?",
abstract = "Objective. We assessed the efficacy of maternal anthropometric measurements and clinical estimates of fetal weight in isolation and in combination as predictors of cephalopelvic disproportion (CPD). Design. Prospective cohort study. Setting. Tertiary care teaching hospital, two affiliated hospitals with facilities for conducting cesarean delivery and seven affiliated primary care facilities with no operation theaters. Sample. Primigravidae over 37 weeks' gestation attending these facilities during a 20-month period with a singleton pregnancy in vertex presentation. Methods. Several anthropometric measurements were taken in 249 primigravidae. Fetal weight was estimated. Differences in these measurements between the vaginal delivery and CPD groups were analyzed. The validity of these measurements in predicting CPD was analyzed by plotting receiver operating characteristic curves and by logistic regression analysis. Main outcome measure. Mode of delivery. Results. Maternal height, foot size, inter-trochanteric diameter and bis-acromial diameter showed the highest positive predictive values for CPD. Combining some maternal measurements with estimates of fetal weight increased predictive values modestly, which are likely to be greater if the estimates of fetal weight are close to the actual birth weight. Based on multivariate analysis the risk factors for CPD in our population were foot length ≤23cm, inter-trochanteric diameter a;circ30cm and estimated fetal weight ≤3 000g. Conclusions. Maternal anthropometric measurements can predict CPD to some extent. Combining maternal measurements with clinical estimates of fetal weight only enhances the predictive value to a relatively modest degree (positive predictive value 24{\%}).",
author = "Benjamin, {Santosh J.} and Daniel, {Anjali B.} and Asha Kamath and Vani Ramkumar",
year = "2012",
month = "1",
doi = "10.1111/j.1600-0412.2011.01267.x",
language = "English",
volume = "91",
pages = "122--127",
journal = "Acta Obstetricia et Gynecologica Scandinavica",
issn = "0001-6349",
publisher = "Wiley-Blackwell",
number = "1",

}

Anthropometric measurements as predictors of cephalopelvic disproportion : Can the diagnostic accuracy be improved? / Benjamin, Santosh J.; Daniel, Anjali B.; Kamath, Asha; Ramkumar, Vani.

In: Acta Obstetricia et Gynecologica Scandinavica, Vol. 91, No. 1, 01.2012, p. 122-127.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Anthropometric measurements as predictors of cephalopelvic disproportion

T2 - Can the diagnostic accuracy be improved?

AU - Benjamin, Santosh J.

AU - Daniel, Anjali B.

AU - Kamath, Asha

AU - Ramkumar, Vani

PY - 2012/1

Y1 - 2012/1

N2 - Objective. We assessed the efficacy of maternal anthropometric measurements and clinical estimates of fetal weight in isolation and in combination as predictors of cephalopelvic disproportion (CPD). Design. Prospective cohort study. Setting. Tertiary care teaching hospital, two affiliated hospitals with facilities for conducting cesarean delivery and seven affiliated primary care facilities with no operation theaters. Sample. Primigravidae over 37 weeks' gestation attending these facilities during a 20-month period with a singleton pregnancy in vertex presentation. Methods. Several anthropometric measurements were taken in 249 primigravidae. Fetal weight was estimated. Differences in these measurements between the vaginal delivery and CPD groups were analyzed. The validity of these measurements in predicting CPD was analyzed by plotting receiver operating characteristic curves and by logistic regression analysis. Main outcome measure. Mode of delivery. Results. Maternal height, foot size, inter-trochanteric diameter and bis-acromial diameter showed the highest positive predictive values for CPD. Combining some maternal measurements with estimates of fetal weight increased predictive values modestly, which are likely to be greater if the estimates of fetal weight are close to the actual birth weight. Based on multivariate analysis the risk factors for CPD in our population were foot length ≤23cm, inter-trochanteric diameter a;circ30cm and estimated fetal weight ≤3 000g. Conclusions. Maternal anthropometric measurements can predict CPD to some extent. Combining maternal measurements with clinical estimates of fetal weight only enhances the predictive value to a relatively modest degree (positive predictive value 24%).

AB - Objective. We assessed the efficacy of maternal anthropometric measurements and clinical estimates of fetal weight in isolation and in combination as predictors of cephalopelvic disproportion (CPD). Design. Prospective cohort study. Setting. Tertiary care teaching hospital, two affiliated hospitals with facilities for conducting cesarean delivery and seven affiliated primary care facilities with no operation theaters. Sample. Primigravidae over 37 weeks' gestation attending these facilities during a 20-month period with a singleton pregnancy in vertex presentation. Methods. Several anthropometric measurements were taken in 249 primigravidae. Fetal weight was estimated. Differences in these measurements between the vaginal delivery and CPD groups were analyzed. The validity of these measurements in predicting CPD was analyzed by plotting receiver operating characteristic curves and by logistic regression analysis. Main outcome measure. Mode of delivery. Results. Maternal height, foot size, inter-trochanteric diameter and bis-acromial diameter showed the highest positive predictive values for CPD. Combining some maternal measurements with estimates of fetal weight increased predictive values modestly, which are likely to be greater if the estimates of fetal weight are close to the actual birth weight. Based on multivariate analysis the risk factors for CPD in our population were foot length ≤23cm, inter-trochanteric diameter a;circ30cm and estimated fetal weight ≤3 000g. Conclusions. Maternal anthropometric measurements can predict CPD to some extent. Combining maternal measurements with clinical estimates of fetal weight only enhances the predictive value to a relatively modest degree (positive predictive value 24%).

UR - http://www.scopus.com/inward/record.url?scp=83455195362&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=83455195362&partnerID=8YFLogxK

U2 - 10.1111/j.1600-0412.2011.01267.x

DO - 10.1111/j.1600-0412.2011.01267.x

M3 - Article

VL - 91

SP - 122

EP - 127

JO - Acta Obstetricia et Gynecologica Scandinavica

JF - Acta Obstetricia et Gynecologica Scandinavica

SN - 0001-6349

IS - 1

ER -