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The effects of vasopressin injection on uterine artery blood flow during dilation and evacuation.

Author(s): Crawford JT, Edelman AB, Pereira L, Bednarek P, Buckmaster J

Affiliation(s): Department of Obstetrics and Gynecology, Oregon Health and Science University, Portland, OR 97239, USA.

Publication date & source: 2007-05, Am J Obstet Gynecol., 196(5):e38-9.

Publication type: Research Support, Non-U.S. Gov't

OBJECTIVE: This study was undertaken to determine whether vasopressin decreases uterine artery blood flow and blood loss in early second-trimester surgical abortions (dilation and evacuation). STUDY DESIGN: Randomized, double blind, placebo-controlled trial of a saline paracervical block with or without vasopressin before dilation and evacuation. Uterine artery pulsatility index and blood loss were measured. RESULTS: Demographics were similar in both groups (mean gestational age 16.8 weeks, SD 1.7). Of 35 randomly assigned patients, Doppler waveforms were adequate in 28 patients (vasopressin, n = 13; placebo, n = 15). The mean difference in uterine artery pulsatility index before and after injection between groups was not significantly different (P = .14). Procedural blood loss was no different. CONCLUSION: Paracervical vasopressin compared to placebo injection did not result in significant changes in uterine artery pulsatility index in early second-trimester dilation and evacuation procedures.

Page last updated: 2007-05-02

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