Cited by 301Obstructive Sleep Apnea ResearchBlood Pressure and Hypertension StudiesSleep and related disorders

The effect of antihypertensive agents on sleep apnea: protocol for a randomized controlled trial

Open access
Cichelero, Fábio Tremea, Martinez, Denis, Fuchs, Sandra Costa, Gus, Miguel, Moreira, Leila Beltrami, Fuchs, Flávio Danni·2014·Trials

Abstract

Background: Obstructive sleep apnea (OSA) and hypertension are well-known cardiovascular risk factors. Their control could reduce the burden of heart disease across populations. Several drugs are used to control hypertension, but the only consistently effective treatment of OSA is continuous positive airway pressure. The identification of a drug capable of improving OSA and hypertension simultaneously would provide a novel approach in the treatment of both diseases. Methods/Design: This is a randomized double-blind clinical trial, comparing the use of chlorthalidone with amiloride versus amlodipine as a first drug option in patients older than 40 years of age with stage I hypertension (140 to 159/90 to 99 mmHg) and moderate OSA (15 to 30 apneas/hour of sleep). The primary outcomes are the variation of the number of apneas per hour and blood pressure measured by ambulatory blood pressure monitoring. The secondary outcomes are adverse events, somnolence scale (Epworth), ventilatory parameters and C reactive protein levels. The follow-up will last 8 weeks. There will be 29 participants per group. The project has been approved by the ethics committee of our institution. Discussion: The role of fluid retention in OSA has been known for several decades. The use of diuretics are well established in treating hypertension but have never been appropriately tested for sleep apnea. As well as testing the efficacy of these drugs, this study will help to understand the mechanisms that link hypertension and sleep apnea and their treatment. Trial registration: ClinicalTrials.gov: NCT01896661

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1186/1745-6215-15-1

Cites

34 of 34 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • This sample size was consistent with sample sizes of 24-35 participants conventionally recommended for pilot and feasibility studies.

    “This sample size was consistent with sample sizes of 24–35 participants conventionally recommended for pilot and feasibility studies.7678”

    From Acceptance and commitment therapy for mild traumatic brain injury (ACTion-mTBI): a quasiexperimental feasibility study (2025) · cites this paper as [76]

    The Methods/design > Sample size calculation section calculates 26 patients per group for this randomized trial, or 58 total after allowing for losses. It does not discuss pilot or feasibility studies or recommend a conventional sample-size range of 24–35 participants; searches for those terms found no supporting passage. (LLM, conf=0.76)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Cichelero, F. T., Martinez, D., Fuchs, S. C., Gus, M., Moreira, L. B., & Fuchs, F. D.
Affiliations
  • Universidade Federal do Rio Grande do Sul (BR)
  • Hospital de Clínicas de Porto Alegre (BR)
Corresponding author
Fuchs, Flávio Danni
Venue
Trials
Published
2014-01-02
Volume
15
Issue
1
Pages
1-1
ISSN
1745-6215 (ISSN-L)
OpenAlex
W2168495171
Cited by
301
References
34
Citations by year
2026: 1 · 2025: 13 · 2024: 11 · 2023: 7 · 2022: 17 · 2021: 44 · 2020: 31 · 2019: 31 · 2018: 32 · 2017: 57 · 2016: 35 · 2015: 13 · 2014: 8 · 2013: 1
FWCI
25.11
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Trials (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Americanae (AECID Library) (publishedVersion, other-oa)
  • Lume (Universidade Federal do Rio Grande do Sul) (submittedVersion, other-oa)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, cc-by-nc-sa)
Funders
  • Hospital de Clínicas de Porto Alegre
  • Fundação Instituto de Pesquisas Econômicas
Topics
  • Health Sciences › Medicine › Physiology › 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
obstructive sleep apnea, hypertension, antihypertensive drugs, chlorthalidone, amiloride, amlodipine, diuretics, fluid retention, apnea-hypopnea index, ambulatory blood pressure monitoring, C-reactive protein, cardiovascular risk factors
MeSH terms
Adult, Antihypertensive Agents, Blood Pressure, Calcium Channel Blockers, Chlorthalidone, Clinical Protocols, Diuretics, Double-Blind Method, Drug Therapy, Combination, Humans, Hypertension, Research Design, Sleep, Sleep Apnea Syndromes, Time Factors, Treatment Outcome, Polysomnography, Amlodipine, Blood Pressure Monitoring, Ambulatory

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review