Maternal sleep-disordered breathing is associated with increased risks of adverse intrapartum and perinatal outcomes.

There is lack of data on the validity of the FTCD and the HSI as markers of cigarette dependence during the second and third trimester of pregnancy. Our study suggests that both the FTCD and HSI perform well in assessing cigarette dependence in the second and third trimester of pregnancy and can be used to plan smoking cessation programs.

Extra-abdominal bowel dilatation is a risk factor for intrapartum fetal compromise (OR 2.2; 95%CI 1.03-4.7) and emergent delivery.