Sleep disordered breathing (SDB) and depression are both common complications of pregnancy and increase risk for adverse maternal and neonatal outcomes. SDB precedes onset of depression in non-pregnant adults; however, the longitudinal relationship has not been studied in pregnancy. The present research examined temporal associations between SDB and depressive symptoms in 175 pregnant women at risk for SDB (based on frequent snoring and obesity), but without an apnea hypopnea index of ≥5 events per hour at enrollment. Women completed a self-report assessments of depressive symptoms using PHQ-9 and in-home level III sleep apnea monitoring at approximately 12- and 32-weeks’ gestation. We also assessed the risk for SDB using the Berlin Questionnaire in early pregnancy. Results revealed that measures of SDB in early pregnancy as assessed by in-home sleep study, but not by self-reported SDB, predicted elevated depressive symptoms in late pregnancy. SDB in late pregnancy was not associated with depressive symptoms. To conclude, these findings suggest that SDB may increase the risk for elevated depressive symptoms as pregnancy progresses.

Background To examine whether change in neutrophil–lymphocyte ratio, a marker of systemic inflammation, differs by childhood adversity and prenatal depression. Methods Prenatal complete blood count data were used to calculate neutrophil–lymphocyte ratio in first and third trimesters. The Adverse Childhood Experiences scale measured childhood adversity, and the Patient Health Questionnaire-9 measured depression. This is a secondary analysis of a study of predictors of risk for sleep-disordered breathing. Results Participants were 98 pregnant women, mean age 30 years ( SD = 5), mean body mass index of 35 kg/m2 ( SD = 7), 61% identified as white, and 28% identified as Hispanic. Women who reported childhood sexual abuse history displayed greater increase in neutrophil–lymphocyte ratio over pregnancy relative to women without childhood sexual abuse. Change in neutrophil–lymphocyte ratio across pregnancy did not differ by prenatal depression. Conclusion Experiences of sexual abuse in childhood may impact markers of systemic inflammation in pregnancy.