Primary Article

A Comparison of Magnesium Sulfate and Indomethacin to Magnesium Sulfate Only for Tocolysis in Preterm Labor With Advanced Cervical Dilation

Authors: DAVID F. LEWIS MD, ARMAND GRIMSHAW MD, G GARY BROOKS MD, DALE R. DUNNIHOO MD, PhD, WARREN N. OTTERSON MD

Abstract

ABSTRACT: Preterm labor becomes more difficult to inhibit as the degree of cervical dilation increases. Indeed, some physicians do not even attempt tocolysis with advanced cervical dilation. We compared single-versus double-agent tocolytic therapy when the cervix was dilated 3 cm or greater. We conducted a retrospective study of 44 patients with preterm labor of unknown etiology and with cervical dilation of greater than 3 cm. At the admitting physician's discretion, patients were treated with either magnesium sulfate or with magnesium sulfate and indomethacin in combination. Longer duration of successful tocolysis was noted in the group that received both magnesium sulfate and indomethacin (368.3 hours versus 70:9 hours). No maternal complications occurred in either group. These pilot data suggest that tocolysis with magnesium sulfate and indomethacin is a safe, effective method of tocolysis in patients with advanced cervical dilation.

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