Tocolytic Therapy in Conservative Management of Symptomatic Placenta Previa

Summary

The objective of our study is to determine the clinical utility related to the maintenance oral nifedipine therapy in patients with symptomatic placenta previa. This study is a prospective, randomized controlled trial with the inclusion, after 24 weeks gestation, of hospitalized patients with symptomatic placenta praevia. All patients may initially receive oral nifedipine therapy with steroid prophylaxis for 48 hours. After then, patients are randomly assigned to receive either oral nifedipine (20 mg every 8 hours) or placebo (one every 8 hours) until 37 weeks of gestation. The primary outcome for the trial is the length of pregnancy in days after the enrollment. A sample size calculation is designed to detect at least a 14 -day difference in time gained in patients with maintenance oral nifedipine therapy. A sample size of about 52 patients per group would have a 80 % chance of detecting this difference at the 5 % level of significance.

Timeline

Start

2008-01

Primary completion

2012-06

Completion

2012-09

Publications

• Verspyck E, Thill C, Ego A, Machevin E, Brasseur-Daudruy M, Ickowicz V, Blondel C, Degre S, Lefebure A, Braund S, Benichou J. Screening for small for gestational age infants in early vs late third-trimester ultrasonography: a randomized trial. Am J Obstet Gynecol MFM. 2023 Nov;5(11):101162. doi: 10.1016/j.ajogmf.2023.101162. Epub 2023 Sep 15.
• Wilson A, Hodgetts-Morton VA, Marson EJ, Markland AD, Larkai E, Papadopoulou A, Coomarasamy A, Tobias A, Chou D, Oladapo OT, Price MJ, Morris K, Gallos ID. Tocolytics for delaying preterm birth: a network meta-analysis (0924). Cochrane Database Syst Rev. 2022 Aug 10;8(8):CD014978. doi: 10.1002/14651858.CD014978.pub2.
• Verspyck E, de Vienne C, Muszynski C, Bubenheim M, Chanavaz-Lacheray I, Dreyfus M, Deruelle P, Benichou J. Maintenance nifedipine therapy for preterm symptomatic placenta previa: A randomized, multicenter, double-blind, placebo-controlled trial. PLoS One. 2017 Mar 23;12(3):e0173717. doi: 10.1371/journal.pone.0173717. eCollection 2017.

Drugs

Indications