Objective-To compare and measure the effects of sleep quality on women with and without postpartum depression (PPD).Design-A case-control repeated measures matched pairs design.
Setting-Home and obstetric office.Participants-Forty-six women who were 6 to 26 weeks postpartum. Two participants were dropped from the final analysis because they were outliers.Methods-Participants underwent wrist actigraphy at home for 7 consecutive days to measure sleep quality (sleep latency, wake after sleep onset, sleep efficiency, wake episodes). The Postpartum Depression Screening Scale measured depression severity. Psychosocial variables were collected during a screening interview. A structured clinical interview was used to diagnose PPD. Correlations, t-tests, and hierarchical multiple regressions were run to analyze data.Results-With the exception of wake episodes, sleep latency (B = 1.80, S.E. = 0.73, P<0.05), wake after sleep onset (B = 6.85, S.E. = 2.85, P<0.05), and thus sleep efficiency (B = −6.31, S.E. = 3.13, P<0.05) predicted PPD symptom severity.Conclusions-Women with PPD experienced poorer sleep quality than women without PPD, and sleep quality worsened with increasing PPD symptom severity. Clinicians need to address measures to improve sleep quality in depressed mothers to decrease symptom severity, and researchers need to develop interventions to facilitate better sleep quality in women with PPD.
KeywordsSleep quality; postpartum depression; wrist actigraphy Callouts:1. In women with postpartum depression, nighttime breastfeeding demands, high-needs infants, and little nighttime support may negatively impact on sleep quality and further exacerbate depressive symptoms.
2.Women with PPD experienced poorer sleep quality than women without PPD, and sleep quality worsened with increasing PPD symptom severity.
3.Because poor sleep quality may negatively impact on PPD symptom severity, clinicians need to address measures to improve sleep quality and minimize nighttime sleep interruptions.Women are vulnerable to poor sleep quality in part because of dramatic hormonal fluctuations occurring during the reproductive cycle (Soares & Murray, 2006
NIH-PA Author ManuscriptNIH-PA Author Manuscript NIH-PA Author Manuscript especially estrogen and progesterone mediate neurotransmitter levels in the brain responsible for maintaining the quality of sleep. Immediately after childbirth, precipitous decreases in estrogen and progesterone precipitate sleep disturbances in most women including difficulty initiating and maintaining sleep even in the absence of infant care (Lee, McEnany, & Zaffke, 2000). Postpartum women experience less total sleep time, less sleep efficiency (time asleep vs. time in bed), and decreased time to rapid eye movement (REM) compared to nonpostpartum women. In spite of being biologically programmed to be awake during the day and sleepy at night, new mothers normally experience less sleep and a 20% increase in wake time during the first 6 weeks postpartum (Goyal, Gay, & Lee, 2007). Because the same neurot...