0337 Insomniacs in Late Pregnancy are Clinically Depressed: Exploring the Role of Nocturnal Rumination

Abstract

Introduction: Depression afflicts 13% of pregnant women. Insomnia complaints often increase across pregnancy. As insomnia often triggers depression, women with insomnia in late pregnancy may be at high depression-risk. Cognitive-emotional dysregulation is thought to underlie both insomnia and depression. We proposed nocturnal rumination (negative repetitive thinking in bed at night) to be a key form of cognitive-emotional dysregulation linking these disorders. Methods: A cross-sectional analysis of women (29.6±4.7 years) in late pregnancy (gestational weeks 26-33) receiving prenatal OB care at a large Midwestern health system completed online surveys of insomnia, depression, and nocturnal rumination. This study was IRB-approved. Results: Of 163 women, 59.5% of women endorsed clinical insomnia. Women with insomnia reported greater depression than good sleepers (t=4.93, p