摘要：Objective: To assess the effect of bod. mass ind.x (BMI) on the tend.ncy of pregnant women to vomit and.on their general cond.tion d.ring pregnancy. Stud. d.sign: We includ.d.patients in this stud. who presented.to our gynecological emergency room and.clinic d.ring their first trimester of pregnancy. All women completed.a questionnaire assessing obstetrical and.physical characteristics, includ.ng gravid.ty, parity, gestational age, height and.weight for BMI calculation. Women were requested.to report the number of vomiting episod.s per d.y and.their general cond.tion using a 1 to 10 scale (1- good. 10- bad.. Patients were allocated.to either a low- frequency group (0- 1 vomiting episod.s per d.y) or to a high- frequency group (2 and.more vomiting episod.s per d.y). Results: Sixty- one consecutive women were includ.d.in the stud.. The low frequency group consisted.of 35 women and.the high frequency group includ.d.the remaining 26 women. The BMI was significantly lower in the high frequency group as compared.to the low frequency group (21.8 ± 3.5 versus 24.4 ± 4.7, respectively; P < 0.05). Patients in the high frequency group also reported.a worse general cond.tion than those in the low frequency group (7.6 ± 2.2 versus 3.5 ± 2.1, respectively; P < 0.05). Conclusion: Patients with higher frequency of vomiting episod.s d.ring the first trimester of pregnancy tend.to have a lower BMI score and.a worse general cond.tion than patients with low frequency of vomiting episod.s.