Racial/ethnic variations in perineal length and association with perineal lacerations: A prospective cohort study

Amanda Yeaton-Massey, Luchin Wong, Teresa N. Sparks, Stephanie J. Handler, Michelle R. Meyer, Jesus M. Granados, Marina Stasenko, Anita Sit, Aaron Caughey

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Objective: To examine the association between race/ethnicity, perineal length and the risk of perineal laceration. Methods: This is a prospective cohort study of a diverse group of women with singleton gestations in the third trimester of pregnancy. Perineal length was measured and mean values calculated for several racial/ethnic groups. Chi-squared analyses were used to examine rates of severe perineal laceration (third or fourth degree laceration) by race/ethnicity among women considered to have a short perineal length. Further, subgroup analyses were performed comparing nulliparas to multiparas. Results: Among 344 study participants, there was no statistically significant difference in mean perineal length by race/ethnicity (White 4.0±1.1cm, African-American 3.7±1.0cm, Latina 4.1±1.1cm, Asian 3.8±1.0cm, and other/unknown 4.0±0.9cm). Considering parity, more multiparous Asian and African-American women had a short perineal length (20.7 and 23.5%, respectively, p=0.05). Finally, the rate of severe perineal lacerations in our cohort was 2.6% overall, but was 8.2% among Asian women (p=0.04). Conclusions: We did not find a relationship between short perineal length and risk of severe perineal laceration with vaginal delivery, or a difference in mean perineal length by maternal race/ethnicity. However, we did find that women of different racial/ethnic groups have varying rates of severe perineal laceration, with Asian women comprising the highest proportion.

Original languageEnglish (US)
Pages (from-to)320-323
Number of pages4
JournalJournal of Maternal-Fetal and Neonatal Medicine
Volume28
Issue number3
DOIs
StatePublished - Feb 1 2015

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Lacerations
Cohort Studies
Prospective Studies
Ethnic Groups
African Americans
Asian Americans
Third Pregnancy Trimester
Parity
Hispanic Americans
Mothers
Pregnancy

Keywords

  • Perineal laceration
  • Perineal length
  • Race/ethnicity

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Obstetrics and Gynecology

Cite this

Racial/ethnic variations in perineal length and association with perineal lacerations : A prospective cohort study. / Yeaton-Massey, Amanda; Wong, Luchin; Sparks, Teresa N.; Handler, Stephanie J.; Meyer, Michelle R.; Granados, Jesus M.; Stasenko, Marina; Sit, Anita; Caughey, Aaron.

In: Journal of Maternal-Fetal and Neonatal Medicine, Vol. 28, No. 3, 01.02.2015, p. 320-323.

Research output: Contribution to journalArticle

Yeaton-Massey, Amanda ; Wong, Luchin ; Sparks, Teresa N. ; Handler, Stephanie J. ; Meyer, Michelle R. ; Granados, Jesus M. ; Stasenko, Marina ; Sit, Anita ; Caughey, Aaron. / Racial/ethnic variations in perineal length and association with perineal lacerations : A prospective cohort study. In: Journal of Maternal-Fetal and Neonatal Medicine. 2015 ; Vol. 28, No. 3. pp. 320-323.
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AU - Meyer, Michelle R.

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AB - Objective: To examine the association between race/ethnicity, perineal length and the risk of perineal laceration. Methods: This is a prospective cohort study of a diverse group of women with singleton gestations in the third trimester of pregnancy. Perineal length was measured and mean values calculated for several racial/ethnic groups. Chi-squared analyses were used to examine rates of severe perineal laceration (third or fourth degree laceration) by race/ethnicity among women considered to have a short perineal length. Further, subgroup analyses were performed comparing nulliparas to multiparas. Results: Among 344 study participants, there was no statistically significant difference in mean perineal length by race/ethnicity (White 4.0±1.1cm, African-American 3.7±1.0cm, Latina 4.1±1.1cm, Asian 3.8±1.0cm, and other/unknown 4.0±0.9cm). Considering parity, more multiparous Asian and African-American women had a short perineal length (20.7 and 23.5%, respectively, p=0.05). Finally, the rate of severe perineal lacerations in our cohort was 2.6% overall, but was 8.2% among Asian women (p=0.04). Conclusions: We did not find a relationship between short perineal length and risk of severe perineal laceration with vaginal delivery, or a difference in mean perineal length by maternal race/ethnicity. However, we did find that women of different racial/ethnic groups have varying rates of severe perineal laceration, with Asian women comprising the highest proportion.

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