Determination of Anterior Pelvic Index (API) to Predict a Narrow Pelvis in Adolescent Girls

Cephalopelvic disproportion in the pelvic inlet is a maternal risk factor in childbirth. A high number of dystocias are attended as emergencies and end in cesarean sections because there is no way to diagnose a narrow pelvis early on, a determination which would be easy to perform and at no cost to...

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Autores principales:	Guerrero,Marco, Ocampo,Juan, Zapata,Marcia, Yépez,Eduardo
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2016
Materias:	Pelvis Pelvimetry Narrow pelvis Obstetric conjugate diameter
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000300056
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spelling	oai:scielo:S0717-950220160003000562016-11-17Determination of Anterior Pelvic Index (API) to Predict a Narrow Pelvis in Adolescent GirlsGuerrero,MarcoOcampo,JuanZapata,MarciaYépez,Eduardo Pelvis Pelvimetry Narrow pelvis Obstetric conjugate diameter Cephalopelvic disproportion in the pelvic inlet is a maternal risk factor in childbirth. A high number of dystocias are attended as emergencies and end in cesarean sections because there is no way to diagnose a narrow pelvis early on, a determination which would be easy to perform and at no cost to the patient. The aim of this study was to determine the Anterior Pelvic Index (API) as a predictive estimator of the obstetric conjugate diameter to differentiate narrow and normal pelvises. The study was conducted with 200 adolescent girls aged 14 to 19 years, from Quito, Ecuador; the parents signed the informed consent and the girls agreed to take part. The interspinous distance, height and obstetric conjugate diameter were measured by ultrasonography. Then the API was calculated and the predictive value of the obstetric conjugate diameter was obtained by simple linear regression. The average API value was 14.8 (CI 95 % 14.75 to 14.86) with a minimum value of 13.99 and a maximum value of 19.92. The association between the API and the obstetric conjugate diameter measured by ultrasonography produced a Pearson's correlation value of 0.543 (p=0.000). The simple linear regression test between the API and the obstetric conjugate diameter measured by ultrasonography was statistically significant. Therefore, it was determined that the prediction of the obstetric conjugate diameter, having the API as a predictor, can be calculated with the following formula:y=4.38+0.45*x and thus a possible narrow pelvis can be anticipated.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.34 n.3 20162016-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000300056en10.4067/S0717-95022016000300056
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Pelvis Pelvimetry Narrow pelvis Obstetric conjugate diameter
spellingShingle	Pelvis Pelvimetry Narrow pelvis Obstetric conjugate diameter Guerrero,Marco Ocampo,Juan Zapata,Marcia Yépez,Eduardo Determination of Anterior Pelvic Index (API) to Predict a Narrow Pelvis in Adolescent Girls
description	Cephalopelvic disproportion in the pelvic inlet is a maternal risk factor in childbirth. A high number of dystocias are attended as emergencies and end in cesarean sections because there is no way to diagnose a narrow pelvis early on, a determination which would be easy to perform and at no cost to the patient. The aim of this study was to determine the Anterior Pelvic Index (API) as a predictive estimator of the obstetric conjugate diameter to differentiate narrow and normal pelvises. The study was conducted with 200 adolescent girls aged 14 to 19 years, from Quito, Ecuador; the parents signed the informed consent and the girls agreed to take part. The interspinous distance, height and obstetric conjugate diameter were measured by ultrasonography. Then the API was calculated and the predictive value of the obstetric conjugate diameter was obtained by simple linear regression. The average API value was 14.8 (CI 95 % 14.75 to 14.86) with a minimum value of 13.99 and a maximum value of 19.92. The association between the API and the obstetric conjugate diameter measured by ultrasonography produced a Pearson's correlation value of 0.543 (p=0.000). The simple linear regression test between the API and the obstetric conjugate diameter measured by ultrasonography was statistically significant. Therefore, it was determined that the prediction of the obstetric conjugate diameter, having the API as a predictor, can be calculated with the following formula:y=4.38+0.45*x and thus a possible narrow pelvis can be anticipated.
author	Guerrero,Marco Ocampo,Juan Zapata,Marcia Yépez,Eduardo
author_facet	Guerrero,Marco Ocampo,Juan Zapata,Marcia Yépez,Eduardo
author_sort	Guerrero,Marco
title	Determination of Anterior Pelvic Index (API) to Predict a Narrow Pelvis in Adolescent Girls
title_short	Determination of Anterior Pelvic Index (API) to Predict a Narrow Pelvis in Adolescent Girls
title_full	Determination of Anterior Pelvic Index (API) to Predict a Narrow Pelvis in Adolescent Girls
title_fullStr	Determination of Anterior Pelvic Index (API) to Predict a Narrow Pelvis in Adolescent Girls
title_full_unstemmed	Determination of Anterior Pelvic Index (API) to Predict a Narrow Pelvis in Adolescent Girls
title_sort	determination of anterior pelvic index (api) to predict a narrow pelvis in adolescent girls
publisher	Sociedad Chilena de Anatomía
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000300056
work_keys_str_mv	AT guerreromarco determinationofanteriorpelvicindexapitopredictanarrowpelvisinadolescentgirls AT ocampojuan determinationofanteriorpelvicindexapitopredictanarrowpelvisinadolescentgirls AT zapatamarcia determinationofanteriorpelvicindexapitopredictanarrowpelvisinadolescentgirls AT yepezeduardo determinationofanteriorpelvicindexapitopredictanarrowpelvisinadolescentgirls
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Determination of Anterior Pelvic Index (API) to Predict a Narrow Pelvis in Adolescent Girls

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