Effect of Nasal Continuous Positive Airway Pressure Treatment on Blood Pressure in Patients With Obstructive Sleep Apnea
Abstract
Background— There is increasing evidence that obstructive sleep apnea (OSA) is an independent risk factor for arterial hypertension. Because there are no controlled studies showing a substantial effect of nasal continuous positive airway pressure (nCPAP) therapy on hypertension in OSA, the impact of treatment on cardiovascular sequelae has been questioned altogether. Therefore, we studied the effect of nCPAP on arterial hypertension in patients with OSA. Methods and Results— Sixty consecutive patients with moderate to severe OSA were randomly assigned to either effective or subtherapeutic nCPAP for 9 weeks on average. Nocturnal polysomnography and continuous noninvasive blood pressure recording for 19 hours was performed before and with treatment. Thirty two patients, 16 in each group, completed the study. Apneas and hypopneas were reduced by ≈95% and 50% in the therapeutic and subtherapeutic groups, respectively. Mean arterial blood pressure decreased by 9.9±11.4 mm Hg with effective nCPAP treatment, whereas no relevant change occurred with subtherapeutic nCPAP ( P =0.01). Mean, diastolic, and systolic blood pressures all decreased significantly by ≈10 mm Hg, both at night and during the day. Conclusions— Effective nCPAP treatment in patients with moderate to severe OSA leads to a substantial reduction in both day and night arterial blood pressure. The fact that a 50% reduction in the apnea-hypopnea index did not result in a decrease in blood pressure emphasizes the importance of highly effective treatment. The drop in mean blood pressure by 10 mm Hg would be predicted to reduce coronary heart disease event risk by 37% and stroke risk by 56%.
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- Authors
- Becker, H. F., Jerrentrup, A., Ploch, T., Grote, L., Penzel, T., Sullivan, C. E., & Peter, J. H.
- Affiliations
- The University of Sydney (AU)
- Venue
- Circulation
- Published
- 2003-01-07
- Volume
- 107
- Issue
- 1
- Pages
- 68-73
- ISSN
- 0009-7322 (ISSN-L)
- 1524-4539
- OpenAlex
- W2045561532
- Cited by
- 931
- References
- 34
- Citations by year
- 2026: 3 · 2025: 9 · 2024: 10 · 2023: 14 · 2022: 18 · 2021: 16 · 2020: 21 · 2019: 16 · 2018: 31 · 2017: 24 · 2016: 34 · 2015: 52 · 2014: 49 · 2013: 46 · 2012: 45
- FWCI
- 37.98
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Circulation (publishedVersion)
- PubMed (publishedVersion)
- Funders
- ResMed
- Topics
- Health Sciences › Medicine › Physiology › Obstructive Sleep Apnea Research
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Blood Pressure and Hypertension Studies
- Keywords
- obstructive sleep apnea, nasal continuous positive airway pressure, hypertension, blood pressure reduction, apnea-hypopnea index, cardiovascular risk, stroke risk, coronary artery disease
- MeSH terms
- Blood Pressure, Female, Humans, Hypertension, Kinetics, Male, Middle Aged, Nose, Pressure, Polysomnography, Sleep Apnea, Obstructive
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