Objective: To evaluate the effect of uterine contractions on the incidence of preterm delivery within 7 and 14 days in twin pregnancies.
Study Design: Study patients were identified from a large database composed of women receiving outpatient surveillance with home uterine contraction monitoring. We included tracings collected on a routine or acute basis from twin pregnancies without cerclage at 24.0-36.0 weeks. Tracings from patients with indicated delivery were excluded. Fisher's exact and Pearson's X2 tests were used.
Results: Datafrom 2,423 patients who recorded 8,291 acute tracings and 12,649 routine tracings were analyzed. Preterm delivery within 7 days followed 1.4% of routine vs. 6.6% of acute tracings (p < 0.001). Preterm delivery within 14 days followed 5.1% of routine vs. 16.8% of acute tracings (p < 0.001).
Conclusion: Preterm uterine contractions affect pregnancy prolongation and outcome in twin pregnancies utilizing outpatient surveillance. Evaluation of patients exhibiting elevated preterm uterine contractions is warranted.
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