Uterine Electrical Activity Before and After Progesterone Treatment for Preterm Labor

Summary

This study will examine the effects of various formulations of progesterone on uterine electromyographic (EMG) activity in pregnant patients in premature labor to determine if progesterone will suppress uterine electrical activity and which formulation may be best for inhibition of uterine activity. Patients will be monitored prior to treatment and following treatment (every 2 to 4 hours) with one of three different formulations of progesterone for up to two days. Patients will continue to be observed until they deliver. Comparisons will be for uterine EMG activity from before treatment to that following treatments at 2, 4, 8, 12 24 and 48 hours and times of delivery after treatments (hours or days following treatments). Comparisons between mean values for EMG activity between the various treatments at the various times will also be made.

Timeline

Start

2011-07

Primary completion

2013-10

Completion

2013-10

Publications

• Background Kuon RJ, Shi SQ, Maul H, Sohn C, Balducci J, Maner WL, Garfield RE. Pharmacologic actions of progestins to inhibit cervical ripening and prevent delivery depend on their properties, the route of administration, and the vehicle. Am J Obstet Gynecol. 2010 May;202(5):455.e1-9. doi: 10.1016/j.ajog.2010.03.025.
• Background Lucovnik M, Kuon RJ, Chambliss LR, Maner WL, Shi SQ, Shi L, Balducci J, Garfield RE. Use of uterine electromyography to diagnose term and preterm labor. Acta Obstet Gynecol Scand. 2011 Feb;90(2):150-7. doi: 10.1111/j.1600-0412.2010.01031.x. Epub 2010 Dec 7.
• Background Kuon RJ, Shi SQ, Maul H, Sohn C, Balducci J, Shi L, Garfield RE. A novel optical method to assess cervical changes during pregnancy and use to evaluate the effects of progestins on term and preterm labor. Am J Obstet Gynecol. 2011 Jul;205(1):82.e15-20. doi: 10.1016/j.ajog.2011.02.048. Epub 2011 Feb 23.
• Background Hassan SS, Romero R, Vidyadhari D, Fusey S, Baxter JK, Khandelwal M, Vijayaraghavan J, Trivedi Y, Soma-Pillay P, Sambarey P, Dayal A, Potapov V, O'Brien J, Astakhov V, Yuzko O, Kinzler W, Dattel B, Sehdev H, Mazheika L, Manchulenko D, Gervasi MT, Sullivan L, Conde-Agudelo A, Phillips JA, Creasy GW; PREGNANT Trial. Vaginal progesterone reduces the rate of preterm birth in women with a sonographic short cervix: a multicenter, randomized, double-blind, placebo-controlled trial. Ultrasound Obstet Gynecol. 2011 Jul;38(1):18-31. doi: 10.1002/uog.9017. Epub 2011 Jun 15.
• Background Ruddock NK, Shi SQ, Jain S, Moore G, Hankins GD, Romero R, Garfield RE. Progesterone, but not 17-alpha-hydroxyprogesterone caproate, inhibits human myometrial contractions. Am J Obstet Gynecol. 2008 Oct;199(4):391.e1-7. doi: 10.1016/j.ajog.2008.06.085.

Drugs

Indications

No indication recorded.