Vaginal birth after Cesarean section and levator ani avulsion: a case-control study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11140%2F21%3A10430639" target="_blank" >RIV/00216208:11140/21:10430639 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11110/21:10430639

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=J3BFUNr5Cx" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=J3BFUNr5Cx</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/uog.23629" target="_blank" >10.1002/uog.23629</a>

Result language

angličtina

Original language name

Vaginal birth after Cesarean section and levator ani avulsion: a case-control study

Original language description

Objective The aim of this study was to explore the risk of levator ani muscle (LAM) avulsion and enlargement of the levator hiatus following vaginal birth after Cesarean section (VBAC) in comparison with vaginal delivery in primiparous women. Methods In this two-center observational case-control study, we identified all women who had a term VBAC for their second delivery at the Departments of Obstetrics and Gynecology at the Faculty of Medicine in Pilsen and the 1st Faculty of Medicine in Prague, Charles University, Czech Republic, between 2012 and 2016. Women with a repeat VBAC, preterm birth or stillbirth were excluded from the study. As a control group, we enrolled a cohort of primiparous women who delivered vaginally during the study period. To increase our control sample, we also invited all primiparous women who delivered vaginally in both participating units between May and June 2019 to participate. All participants were invited for a four-dimensional pelvic floor ultrasound scan to assess LAM trauma. LAM avulsion and the area of the levator hiatus were assessed offline from the stored pelvic floor volumes obtained at rest, during maximum contraction and during Valsalva maneuver. The laterality of the avulsion was also noted. The cohorts were then compared using the.2 test and Wilcoxon&apos;s two-sample test according to the normality of the distribution. P&lt; 0.05 was considered statistically significant. Multivariate regression analysis, controlling for age and body mass index (BMI), was also performed. Results A total of 356 women had a VBAC for their second delivery during the study period. Of these, 152 (42.7%) attended the ultrasound examination and full data were available for statistical analysis for 141 women. The control group comprised 113 primiparous women. A significant difference was observed between the VBAC group and the control group in age (32.7 vs 30.1 years; P&lt; 0.05), BMI (28.4 vs 27.4 kg/m(2); P&lt; 0.05) and duration of the first and second stages of labor (293.1 vs 345.9 min; P&lt; 0.05 and 27.6 vs 35.3 min; P&lt; 0.05, respectively) at the time of the index birth. The LAM avulsion rate was significantly higher in the VBAC compared with the control group (32.6% vs 18.6%; P= 0.01). The difference between the groups was observed predominantly in the rate of unilateral avulsion and remained significant after controlling for age and BMI (adjusted odds ratio 2.061 (95% CI, 1.103-3.852)). There was no statistically significant difference in the area of the levator hiatus at rest (12.0 vs 12.6 cm(2); P= 0.28) or on maximum Valsalva maneuver (18.6 vs 18.7 cm(2); P= 0.55) between the VBAC and control groups. The incidence of levator hiatal ballooning was comparable between the groups (17.7% and 18.6%; P= 0.86). Conclusions VBAC is associated with a significantly higher rate of LAM avulsion than is vaginal birth in nulliparous women. The difference was significant even after controlling for age and BMI. (C) 2021 International Society of Ultrasound in Obstetrics and Gynecology.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

30214 - Obstetrics and gynaecology

Project

<a href="/en/project/EF16_019%2F0000787" target="_blank" >EF16_019/0000787: Fighting INfectious Diseases</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Ultrasound in Obstetrics and Gynecology

ISSN

0960-7692

e-ISSN

—

Volume of the periodical

58

Issue of the periodical within the volume

2

Country of publishing house

US - UNITED STATES

Number of pages

6

Pages from-to

303-308

UT code for WoS article

000672099100001

EID of the result in the Scopus database

2-s2.0-85109646755