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Obstructive sleep apnea and plasma natriuretic peptide levels in a community-based sample
Anjali A Patwardhan1, Martin G Larson, Daniel Levy
1Boston University School of Medicine, Boston, MA, USA.
Sleep
|October 31, 2006
Summary
Obstructive sleep apnea-hypopnea (OSAH) did not show significant associations with natriuretic peptides, suggesting no major cardiac changes in undiagnosed cases. This study examined OSAH and natriuretic peptides in a community sample.
Area of Science:
- Cardiology
- Sleep Medicine
- Biomarkers
Background:
- Obstructive sleep apnea-hypopnea (OSAH) is linked to cardiovascular issues.
- Natriuretic peptides (BNP, NT-ANP) are markers of cardiac strain.
Purpose of the Study:
- To investigate the association between OSAH and natriuretic peptide levels.
- To determine if OSAH is reflected in elevated BNP or NT-ANP.
Main Methods:
- Cross-sectional, observational study of 623 individuals from Framingham Heart Study and Sleep Heart Health Study.
- Polysomnography measured apnea-hypopnea index (AHI) and time with oxygen saturation < 90% (PctLt90).
- Plasma BNP and NT-ANP measured; multivariable regression analyzed associations with OSAH indicators.
Main Results:
- No significant associations were found between OSAH indices (AHI) and BNP levels.
- No significant associations were found between AHI and NT-ANP levels in multivariable models.
- An inverse association between NT-ANP and PctLt90 was observed but became nonsignificant after adjusting for BMI.
Conclusions:
- The lack of association suggests undiagnosed OSAH may not significantly alter cardiac function.
- Morning natriuretic peptide levels may not reflect major left ventricular changes in OSAH.
- Further research may be needed to explore subtle cardiac effects or different markers.
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