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Objective:  determining the prevalence of cigarette smoking during pregnancy and its associated factors. Materials and methods:  cross sectional study in pregnant women to whom were carried out a survey at Maternal Fetal Medicine Service at the Hospital Universitario San Vicente de Paul in Medellin during september 2009 - february 2010. A strict sequential sample was performed. The prevalence of tobacco consumption, the percentage of cessation during gestation, age, number of children were evaluated. Results:  2171 surveys were performed. The prevalence of cigarette smoking was 7.3%, (IC 95% 6.3 - 8.5), and 56%, (90 people) gave up smoking when they found out that they were pregnant. 70 patients continued to smoke, with an average of 7.2 cigarettes a day. Conclusion:  the cigarette consumption during gestation is a problem that affects our pregnant women. New research must be done in a population base for a greater population of this kind of people in order to evaluate much more accurately the magnitude of the problem.

Prevalencia de tabaquismo en una población de embarazadas en el Hospital Universitario San Vicente de Paúl en Medellín (Colombia)