Associations Between Non-communicable Diseases and Obstetric Complications: A Retrospective Records Review at a Tertiary Referral Hospital in Uganda.

Objective: Non-communicable diseases (NCDs) increasingly contribute to maternal morbidity and mortality. We determined the association between NCDs and obstetric complications at Mbarara Regional Referral Hospital (MRRH) in southwestern Uganda.

Methods: In this retrospective records review, we randomly selected records of women admitted for delivery at MRRH each month from January to December 2022, and extracted their socio-demographic and clinical histories. We defined a history of NCDs as chronic hypertension, pre-gestational diabetes, cardiac disease, anemia, or asthma. We performed a multivariate robust Poisson regression analysis to assess the association between NCDs and obstetric complications, including preeclampsia, gestational diabetes, venous thromboembolic disease, obstetric hemorrhage, and preterm labor. Models were adjusted for maternal age, gravidity, referral status, employment status, and human immunodeficiency virus (HIV) serostatus.

Results:  We extracted data for 2,336 women with a mean age of 26±5.9 years. At least one NCD was present in 6.4% (n=149) of the patients, including anemia (n=77, 3.3%), chronic hypertension (n=35, 1.5%), pre-gestational diabetes (n=16, 0.7%), asthma (n=9, 0.4%), and cardiac disease (n=6, 0.3%). Overall, 542 (23.2%) women had obstetric complications, including preeclampsia (n=265, 11.3%), preterm labor (n=67, 2.9%), placental abruption (n=29, 1.2%), postpartum hemorrhage (PPH) (n=54, 2.3%), and gestational diabetes (n=5, 0.2%). Women with NCDs had an increased likelihood of having an obstetric complication compared to women without (overall proportion 33.6% vs 22.5% respectively); adjusted prevalence ratio (aPR) was 1.8 (95% CI: 1.4-2.3) overall, 1.8 (95%CI: 1.2-2.8) for preeclampsia, 12.0 (95%CI: 2.0-72.7) for gestational diabetes, 6.0 (95%CI: 1.3-27.1) for deep venous thrombosis, 4.4 (95%CI: 1.5-12.6) for placenta abruption, and 4.3 (95%CI: 2.2-8.3) for PPH.

Conclusions: We found that NCDs were associated with a nearly two-fold increase in the risk of obstetric complications. Our findings highlight the need for further research to understand the impact of this risk, particularly on maternal and fetal outcomes. Additionally, these findings suggest strengthened NCD surveillance, as a means of increasing preparedness, and management of potential obstetric complications among pregnant women in Uganda.