E-ISSN: 1309-0380
The effect of valethamate bromide in acceleration of labor: a double-blind, placebo-controlled trial
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Clinical Study
VOLUME: 7 ISSUE: 3
P: 202-205
September 2006

The effect of valethamate bromide in acceleration of labor: a double-blind, placebo-controlled trial

J Turk Ger Gynecol Assoc 2006;7(3):202-205
Ahmet Cem Batukan 1
Mahmut Tuncay Özgün 2
Çagdas Türkyilmaz 1
Mehmet Dolanbay 1
Ipek Iptisam Müderris 1
1. Department Of Obstetrics And Gynecelogy, Faculty Of Medicine, Erciyes University, Kayseri, Turkey
2. Erciyes University, Faculty Of Medicine, Department Of Obstetrics And Gynecology, Kayseri, Turkey
No information available.
No information available
Received Date: 27.04.2006
Accepted Date: 28.07.2006
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ABSTRACT

Conclusion(s)

Valethamate bromide administered during the active phase of labor significantly shortens the duration of the first stage of labor when compared with placebo.

Result(s)

Maternal age (25.6 ± 5.7 vs. 26.4 ± 6.3 years), gestational age at delivery (39.0 ± 1.5 vs. 38.9 ± 1.8 weeks), birth weight (3285 ± 334 vs. 3252 ± 460g) and parity (27/48 vs 28/50 primipara) of both groups were comparable (p>0.05). The active phase of labor was significantly shorter in the Valethamate bromide group than in the placebo group (200.2 ± 88.3 vs. 267.2 ± 131.3 minutes; p=0.04). Valethamate bromide shortened the active phase of labor in primiparas (210.3 ± 93.5 vs. 287.1 ± 130.3 minutes; p=0.015) but not in multiparas (187.1 ± 81.4 vs. 241.9 ± 131.1 minutes; p=0.11). The duration of the second stage of labor was comparable between both groups (39.1 ± 50.9 vs. 58.0 ± 120.9 minutes; p>0.05). The need for oxytocine was similar in both goups (9/48 vs. 6/50; p>0.05). The number of physicians who found that the medication was effective was significantly higher in the valethamate bromide group (39/48) than in the placebo group (28/50) (p=.001).

Patient(s) and Method(s)

A total of 98 women with term pregnancies admitting to our clinic for vaginal delivery were included in this study. Patients were randomized to receive intramuscularly either 8mg/mL valethamate bromide (n=48) or a similar amount of placebo (1 mL 0.9% NaCl; n=50) at the beginning of the active phase (i.e. cervical dilatation 4-5cm) of labor. The medications were given at hourly intervals for a total of three doses. Primary outcome measures were (1) time elapsed until the second stage of labor, (2) duration of the second stage of labor and (3) need for augmentation of labor with oxytocine. Secondary outcome measure was the subjective impression of the physician about the efficacy of the medication and associated adverse effects.

OBJECTIVE

Although valethamate bromide is used liberally to facilitate cervical dilatation, there is little and inconclusive data about its efficacy. The aim of this study was to determine the effect of valethamate bromide on the duration of labor.

Keywords:
valethamate bromide, labor, delivery, cervical dilatation, duration, spasmolytic