Are women in Uganda gaining adequate gestational weight? A prospective study in low income urban Kampala.

Background: Pre-pregnancy weight and weight gained during pregnancy significantly influence maternal and infant health. Little information is available regarding optimal gestational weight gain (GWG) in relation to pre-pregnancy body mass index (BMI) in Uganda. The study aimed at determining gestational weight gain (GWG) in women pregnant for the first and second time.

Methods: The study was prospective cohort study which included 221 HIV negative women pregnant for the first or second time. It was conducted in the antenatal clinic of the directorate of gynecology and obstetrics, Mulago hospital and women were recruited at ≤18 weeks of gestation by dates. Follow up measurements were done at 26 and 36 weeks gestation. Measured maternal height and reported pre-pregnancy weight were used to calculate BMI. Depending on BMI category, GWG was categorized as inadequate, adequate and excessive based on the Uganda Ministry of Health guidelines.

Results: The participants' mean ± standard deviation (Sd) age was 20.9 ± 2.7 years and mean ± Sd BMI was 21.40 ± 2.73 kg/m. None of the participants was obese and 68.8% (n = 132) were pregnant for the first time. The mean ± Sd GWG at time of delivery was 10.58 ± 2.44 kg. Inadequate GWG was recorded in 62.5% (n = 120/192) while only 3.1% (n = 6/192) of the participants gained excessive weight during pregnancy.

Conclusion: About 62% of pregnant women in Kampala did not gain adequate weight during their first/second pregnancy. We recommend that studies be carried out to assess whether the Uganda Ministry of Health recommendations for weight gain during are appropriate for preventing adverse pregnancy outcomes across populations in Uganda.