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Cited by 142Obstructive Sleep Apnea ResearchBlood Pressure and Hypertension StudiesSleep and related disorders

The DOI matches its Crossref record; 37 of the 37 references it cites were found in a registry or an index.

Effects of Continuous Positive Airway Pressure Treatment on Clinic and Ambulatory Blood Pressures in Patients With Obstructive Sleep Apnea and Resistant Hypertension: A Randomized Controlled Trial

Muxfeldt, Elizabeth S., Margallo, Victor, Costa, Leonardo M.S., Guimarães, Gleison, Cavalcante, Aline H., Azevedo, João C.M., de Souza, Fabio, Cardoso, Claudia R.L., Salles, Gil F.·2015·Hypertension
DOI 10.1161/hypertensionaha.114.04852
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Abstract

The effect of continuous positive airway pressure (CPAP) on blood pressures (BPs) in patients with resistant hypertension and obstructive sleep apnea is not established. We aimed to evaluate it in a randomized controlled clinical trial, with blinded assessment of outcomes. Four hundred thirty-four resistant hypertensive patients were screened and 117 patients with moderate/severe obstructive sleep apnea, defined by an apnea–hypopnea index ≥15 per hour, were randomized to 6-month CPAP treatment (57 patients) or no therapy (60 patients), while maintaining antihypertensive treatment. Clinic and 24-hour ambulatory BPs were obtained before and after 6-month treatment. Primary outcomes were changes in clinic and ambulatory BPs and in nocturnal BP fall patterns. Intention-to-treat and per-protocol (limited to those with uncontrolled ambulatory BPs) analyses were performed. Patients had mean (SD) 24-hour BP of 129(16)/75(12) mm Hg, and 59% had uncontrolled ambulatory BPs. Mean apnea–hypopnea index was 41 per hour and 58.5% had severe obstructive sleep apnea. On intention-to-treat analysis, there was no significant difference in any BP change, neither in nocturnal BP fall, between CPAP and control groups. The best effect of CPAP was on night-time systolic blood pressure in per-protocol analysis, with greater reduction of 4.7 mm Hg (95% confidence interval, −11.3 to +3.1 mm Hg; P =0.24) and an increase in nocturnal BP fall of 2.2% (95% confidence interval, −1.6% to +5.8%; P =0.25), in comparison with control group. In conclusion, CPAP treatment had no significant effect on clinic and ambulatory BPs in patients with resistant hypertension and moderate/severe obstructive sleep apnea, although a beneficial effect on night-time systolic blood pressure and on nocturnal BP fall might exist in patients with uncontrolled ambulatory BP levels.

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Crossref · 10.1161/hypertensionaha.114.04852

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Metadata

Authors
Muxfeldt, E. S., Margallo, V., Costa, L. M. S., Guimarães, G., Cavalcante, A. H., Azevedo, J. C. M., de Souza, F., Cardoso, C. R. L., & Salles, G. F.
Affiliations
  • Universidade Federal do Rio de Janeiro (BR)
  • From the Department of Internal Medicine, University Hospital Clementino Fraga Filho, School of Medicine, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
ORCID
Venue
Hypertension
Publisher
Ovid Technologies (Wolters Kluwer Health)
Published
2015-04
Volume
65
Issue
4
Pages
736-742
ISSN
  • 0194-911X (ISSN-L)
  • 1524-4563
DOI
10.1161/hypertensionaha.114.04852
OpenAlex
W2161355380
Cited by
142
References
37
Citations by year
2026: 4 · 2025: 9 · 2024: 11 · 2023: 17 · 2022: 9 · 2021: 9 · 2020: 10 · 2019: 9 · 2018: 16 · 2017: 23 · 2016: 12 · 2015: 13
FWCI
15.74
Type
journal article
Language
en
Open access
closed
Locations
  • Hypertension (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology (medical) › Obstructive Sleep Apnea Research
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Blood Pressure and Hypertension Studies
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
Keywords
continuous positive airway pressure, obstructive sleep apnea, resistant hypertension, blood pressure, ambulatory blood pressure monitoring, nocturnal blood pressure dipping, apnea-hypopnea index
MeSH terms
Aged, Antihypertensive Agents, Blood Pressure, Female, Follow-Up Studies, Humans, Hypertension, Male, Middle Aged, Retrospective Studies, Severity of Illness Index, Treatment Outcome, Blood Pressure Monitoring, Ambulatory, Sleep Apnea, Obstructive, Continuous Positive Airway Pressure

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