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Factors associated with rapid labour in nulliparae
J M Stronge1, M Wingfield, M Foley
1National Maternity Hospital, Dublin, Ireland.
Summary
Rapid labor in nulliparae (women having their first baby) is influenced by cervical dilation on admission and shorter gestation. Factors like ruptured membranes or time spent at home did not significantly impact rapid labor progression.
Area of Science:
- Obstetrics and Gynecology
- Maternal-Fetal Medicine
- Reproductive Health
Background:
- Understanding factors influencing labor duration is crucial for optimizing maternal and neonatal outcomes.
- Nulliparae (women in their first labor) often experience longer labor compared to multiparae.
- Identifying predictors of rapid labor can aid in clinical management and patient counseling.
Purpose of the Study:
- To investigate the clinical and demographic factors associated with rapid labor in nulliparae.
- To determine predictors of labor lasting 2 hours or less in first-time mothers.
Main Methods:
- A prospective cohort study involving 991 nulliparae admitted in spontaneous labor with singleton, cephalic presentations.
- Data collected included cervical dilation, gestational age, birth weight, interventions, and patient-reported factors.
- Statistical analysis compared characteristics of women experiencing rapid labor versus those with longer labor durations.
Main Results:
- Rapid labor (≤2 hours) occurred in 8.3% of nulliparae.
- Cervical dilation of ≥2 cm on admission, gestation <37 weeks, and lower birth weight were associated with rapid labor.
- Women in rapid labor were less likely to require oxytocin, operative delivery, or epidural anesthesia.
Conclusions:
- Cervical dilation on admission is a key indicator of efficient uterine action and predicts rapid labor in nulliparae.
- Gestational age and birth weight also play a role in labor progression.
- Rapid labor is associated with fewer interventions and less need for pain relief.