Key result
Post-MI women show high sleep disturbance rates, including abnormal sleep duration in ~65%.
Cross-Sectional (n=94)
Yes
This study highlights that a majority of women experience suboptimal sleep across multiple dimensions after a myocardial infarction, underscoring the need for comprehensive sleep assessments in this population.
Abnormal sleep is prevalent post-MI in women; hypothesis-generating for sleep interventions in secondary prevention but should not yet change practice.
BACKGROUND: Poor sleep after acute cardiovascular events is associated with increased mortality. Women are more likely than men to report sleep disturbances after cardiovascular events, but other sleep metrics linked to cardiometabolic health remain underexplored. OBJECTIVES: We characterize multiple dimensions of sleep and examine factors associated with poor sleep among women with prior myocardial infarction (MI). METHODS: Participants completed 7 nights of wrist actigraphy, which measured sleep duration, sleep efficiency, and wake after sleep onset (WASO), and sleep diary, which measured self-reported sleep quality using a Likert scale. Multivariable regression modeled associations between sociodemographic, clinical, and psychosocial characteristics and sleep measures. RESULTS: Among 94 post-MI women (median days since MI 93; IQR: 69-709), mean age was 60 years, and 67.0% identified as non-Hispanic White. The mean sleep duration was 405.1 minutes (approximately 6.8 hours), sleep efficiency 86.3%, WASO 61.6 minutes, and self-reported sleep quality 3.3, indicating fair-to-good sleep quality. Overall, 64.9% of women had short (<7 hours) or long (>9 hours) sleep duration, 33% low sleep efficiency (<85%), and 88.3% long WASO (>30 minutes). In exploratory analyses, associations with poor sleep included identifying as other than non-Hispanic White (shorter sleep duration, lower efficiency, and longer WASO), being nonpartnered (shorter sleep duration), hypertension (lower sleep efficiency), and higher depressive symptoms (lower sleep quality). CONCLUSIONS: Many women with prior MI had suboptimal sleep (short or long sleep duration, low sleep efficiency, and/or long WASO). Our results highlight the importance of discussing multiple dimensions of sleep with women post-MI to optimize cardiovascular health.
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Liu et al. (2026) conducted a cross-sectional in Prior myocardial infarction (n=94). Sociodemographic and clinical characteristics was evaluated on Sleep duration, sleep efficiency, wake after sleep onset (WASO), and self-reported sleep quality. Among women with prior myocardial infarction, 64.9% had abnormal sleep duration, 33% had low sleep efficiency, and 88.3% had long wake after sleep onset.
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