Dystocia: a study of its frequency and risk factors in seven cities of west Africa

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Abstract
To determine the incidence of dystocia in seven west African cities, to attempt to discover what, if any, factors at the prenatal visit might identify women at risk of dystocia, and to assess the utility of such screening. This prospective population study of 20326 pregnant women in west Africa (MOMA) analyzed risk factors for dystocia on the basis of deliveries in health care facilities. Incidence of dystocia was 18.3%. In the multivariate analysis, the risk factors were small stature, previous cesarean, and nulliparity. As screening tools these factors have inadequate positive predictive values, either singly or combined. It is almost impossible to predict the occurrence of dystocia before the onset of labor. Therefore, labor must be carefully monitored, and there must be health care facilities available that can manage complications, especially cesarean deliveries. If such facilities are not accessible, an effective referral system must be established.

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