Risk factors for sleep-disordered breathing in pregnancy

The stimulating paper of Pien et al 1 reported the findings of a prospective cohort study of pregnant women examining risk factors for sleep-disordered breathing (SDB). It was notable that, despite a marked increase in the number of women with obstructive sleep apnoea (OSA) from the first to third trimester (from 10.5% to 26.7%, respectively), there were no significant associations between any SDB variable and development of gestational hypertension or preeclampsia …