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Evaluation of Left Ventricular Structure and Function using 3D Echocardiography
Published on: October 28, 2020
Relation between long sleep and left ventricular mass (from a multiethnic elderly cohort)
Alberto R Ramos1, Zhezhen Jin, Tatjana Rundek
1Department of Neurology, Miller School of Medicine, University of Miami, Miami, FL, USA.
The American Journal of Cardiology
|May 29, 2013
Summary
Long sleep duration is linked to increased left ventricular mass, a heart condition indicator. Higher blood pressure, particularly at night, may explain this association in older adults.
Area of Science:
- Cardiology
- Sleep Medicine
- Public Health
Background:
- Short- and long-sleep durations are linked to hypertension, cardiovascular issues, and mortality.
- The relationship between sleep duration and left ventricular (LV) mass, a key indicator of blood pressure, is not well-established.
Purpose of the Study:
- To investigate the association between sleep duration and LV mass index.
- To explore the role of blood pressure in mediating this relationship.
Main Methods:
- Cross-sectional analysis of the Cardiovascular Abnormalities and Brain Lesions study participants.
- LV mass assessed via echocardiography; sleep duration via 24-hour sleep diary.
- Multivariate linear regression models used to analyze sleep hours and LV mass index, including categorical analysis.
Main Results:
- A J-shaped relationship was observed between sleep hours and LV mass index after adjustments.
- Long-sleep duration (>11 hours) was associated with increased LV mass index (β = 7.4; p = 0.013).
- Long sleepers exhibited higher diurnal and nocturnal systolic blood pressure; 24-hour systolic BP explained significant variance.
Conclusions:
- Self-reported long-sleep duration is associated with increased left ventricular mass.
- Elevated systolic blood pressure, especially nocturnal, may partially mediate the link between long sleep and LV mass.
