Labor, an important event, is marked by the fear of pain. Painless and short labor is desired. Obstetricians goal is, healthy neonate and mother. Methods used to shorten active phase of labor are welcomed. Prolonged labor causes high feto-maternal morbidity. Shortening of duration of labor, without jeopardizing feto- maternal interests is warranted,^. Various methods tried to accelerate labor. Hyoscine-n-butyl bromide, scopolamine and Valethamate bromide widely studied. Present study conducted to compare effects of Drotavarine hydrochloride and combination of Hyoscine-N-butyl bromide plus Valethamate bromide on duration of active phase and their feto-materal side effects.  200 women divided into two groups 100 each.  Group A received Drotavarine hydrochloride 40mg I/M, 2 doses 2 hours apart(2^nd if required). Group B given combination of Hyoscine-N-butyl bromide 40 mg and Valethamate bromide 16mg I/M, 2 doses 2 hours apart(2nd if required). 98% delivered vaginally. 2% (LSCS) in each group and excluded. Mean no. of doses 1.36±0.48 (Group A), 1.83±0.37 (Group B) p value <0.001 HS. Mean rate of dilatation (cms/hr) was more in Group A(3.81±1.52) than B (2.29±0.64) p value<0.001 HS. Mean Active phase was 112.70±53.09 mins in Group A and 171.44±57.24 min in B, p value<0.001 HS. Drug-delivery interval was 45.10±63.22 min (groupA) and 202.09±60.35 min (Group B) p value <0.001HS. No serious feto-maternal side effects. Drotavarine and combination drugs are safe to shorten the duration of active phase.

Keywords: Drotavarine,Valethamate, active phase. Dilatation. 

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Balwinder Kaur

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