Factors Associated with Maternal Morbidity in the Term Breech Trial
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OBJECTIVE: In the Term Breech Trial, the risk of maternal morbidity in women who delivered after planning for a caesarean section (CS) was not significantly different from those who delivered after planning for a vaginal birth. We undertook secondary analyses to determine factors associated with maternal morbidity among 2078 women. METHODS: By using multiple logistic regression analyses, we determined the effect of prelabour CS, CS during early labour, CS during active labour, vaginal birth, and other factors on maternal morbidity. For 1536 women delivered after labour, we determined the effect of variables associated with labour on maternal morbidity. RESULTS: The risk of maternal morbidity was lowest following vaginal birth (odds ratio [OR] 1.0) and highest following CS during active labour (OR 3.33; 95% confidence intervals [CI] 1.75-6.33, P < 0.001). For those delivered after labour, a short active phase of the second stage of labour (< 30 minutes) was associated with the lowest risk of maternal morbidity (OR 0.25; 95% CI 0.11-0.57, P < 0.001). CONCLUSION: For women with a singleton fetus in breech resentation at term, maternal morbidity is lowest following vaginal birth and highest following CS during active labour.
