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Created on : 12 Jun 2004
Modified on : 02 Dec 2007

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Bibliographical entry (without author) :

Perineal body length and lacerations at delivery. J Reprod Med. 2004 Apr;49(4):306-10.

Author(s) :

Deering SH, Carlson N, Stitely M, Allaire AD, Satin AJ.

Year of publication :

2004

URL(s) :

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

Résumé (français)  :

Abstract (English)  :

OBJECTIVE: To define normal perineal body length during labor and determine if a shortened perineal body is associated with perineal lacerations or operative vaginal delivery.

STUDY DESIGN: We reviewed charts of patients admitted for labor over a 4-month period. The perineal body was measured by the admitting physician and delivery outcomes obtained from inpatient records. Patients were excluded for malpresentation, multiple gestation, gestational age < 36 weeks, incomplete records and scheduled cesarean delivery. To determine if differences existed between patients with perineal body measurements available and those without, chi2 analysis was used, with P<.05 considered significant. Multiple logistic regression was used to control for confounding variables and determine if a shortened perineal body affected the incidence of operative vaginal delivery and significant lacerations at vaginal delivery.

RESULTS: A total of 234 patients met our inclusion criteria; perineal body measurements were available for 133 (57%). The average perineal body length was 3.90 cm (+/-0.70). Patients with a perineal body of < or = 2.5 cm had a significantly higher chance of sustaining a third- or fourth-degree laceration (40% vs. 5.6%, P=.004). This risk remained after controlling for both operative vaginal delivery and episiotomy. The incidence of operative vaginal delivery was greater (28.5% vs. 9.2%, P =.006) for patients with a perineal body < or = 3.5 cm.

CONCLUSION: There is an increased risk of significant lacerations and operative vaginal delivery in patients with a shortened perineal body.

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Resumen (español)  :

Comments :

Argument (français) :

Argument (English):

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Keywords :

➡ evidence-based medicine/midwifery ; perineal/vaginal tears ; instrumental delivery

Author of this record :

Cécile Loup — 12 Jun 2004