2023, Number 07
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Ginecol Obstet Mex 2023; 91 (07)
Factors associated with the success of a trial of labor after cesarean section (TOLAC) without a history of vaginal delivery
Martínez VE, Zetuna BJZ, Quesnel GBCA
Language: Spanish
References: 20
Page: 493-498
PDF size: 182.37 Kb.
ABSTRACT
Objective: To determine the factors associated with a trial of labor after a successful
cesarean section in women with no history of previous delivery.
Materials and Methods: Observational case-control, longitudinal, retrospective,
analytical, retrospective study performed in patient attended between 2017 and 2020
at Hospital Ángeles Lomas, with a singleton pregnancy of more than 37 weeks, with a
trial of labor, with a previous cesarean section and no history of previous delivery. The
independent variables were compared between the group that achieved a successful
trial of labor after cesarean section with those of the group with failed trial. For statisti-
cal analysis, the IBM SPSS program, version 21, was used. All categorical variables are
expressed in frequencies and percentages.
Results: We included 135 patients with trial of labor after cesarean section of whom
65 (48.1%) had labor (successful trial) and 70 (51.8%) had cesarean section (failed
trial). There was a higher proportion of spontaneous labor in the successful trial group
compared to the failed trial group (66.2% compared to 37.1%). There were no significant
differences in labor conduction, amniotic membrane integrity on admission,
hours of labor, and birth weight.
Conclusions: Lower body mass index, spontaneous labor, and greater dilation on
admission were significantly associated with a successful trial of labor after cesarean
section. Membrane integrity, length of trial, and birth weight had no significant differences
between groups.
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