NCT00202527

Brief Summary

AIMS:To know the effects of the treatment with nasal positive continuous airway pressure (CPAP) on systemic blood pressure and the expression of biological mediators, in systemic hypertension of recent diagnostic, whose have an apnea-hypopnea index \> 15. METHODOLOGY: DESIGN: Prospective, multicenter, randomized study, of parallel groups and controlled with placebo, in patients diagnosed of systemic hypertension (SH) with an apnea-hypopnea index, by conventional polysomnography \> 15. A total of 340 patients with recently diagnosed of SH and without any pharmacological treatment will be studied. All patients will be randomized to receive, alternatively, CPAP treatment with optimal pressure titled with a proved system, or Sham-CPAP for 12 weeks. MEASUREMENTS: A) Conventional polysomnography at baseline: B) Clinic: sleepiness (ATS, Basic Nordic Sleep Questionnaire and Epworth), quality of life (EuroQol); C) 24 hour blood pressure monitoring; D) Expression of biological mediators in blood: general determinations, endothelial, inflammatory, lipid, renin-angiotensin-aldosterone and adrenergic mediators. ANALYSIS. Baseline measurements of all the variables will be compared with the situation at six and twelve weeks. We will use the chi square test and the Fisher´s exact test (categorical variables), the t test for continous variables and repeated measures ANCOVA for the primary objective. The analyses will be done under the criterion of intention to treat and for protocol. The variables will be controlled by the compliance with the CPAP..

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
340

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Jan 2005

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

January 1, 2005

Completed
8 months until next milestone

Study Completion

Last participant's last visit for all outcomes

September 1, 2005

Completed
11 days until next milestone

First Submitted

Initial submission to the registry

September 12, 2005

Completed
8 days until next milestone

First Posted

Study publicly available on registry

September 20, 2005

Completed
Last Updated

December 23, 2005

Status Verified

September 1, 2005

First QC Date

September 12, 2005

Last Update Submit

December 22, 2005

Conditions

Keywords

Sleep apneaHypertensionCPAP

Outcome Measures

Primary Outcomes (2)

  • Effect of CPAP in 24 hours blood pressure monitoring

  • effect of CPAP y quality of life and clinical aspects

Secondary Outcomes (1)

  • effect of CPAP in biologic mediators

Interventions

Eligibility Criteria

Age18 Years - 75 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Patients, both sexes from 18 to 75 years old, with clinical suspected of OSAH defined by an apnea-hypopnea index \> 15 and having a recent diagnosis of hypertension which have not received any pharmacological treatment for hypertension.

You may not qualify if:

  • Patients with clinical suspected of OSAH defined by an apnea-hypopnea index \> 15 and having a recent diagnosis of hypertension which have not received any pharmacological treatment for hypertension.
  • Severe excessive daytime sleepiness; professional drivers; pregnant women; alcohol consumption more than 100 gr. Ethanol per day; sedative medication; psychiatric illness; malignant or complicated hypertension; renal insufficiency; severe chronically ilness or malignant ilness; severe craniomandibular disease

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Unit of Research. Hospital Txagorritxu

Vitoria-Gasteiz, ALAVA, 01009, Spain

RECRUITING

Related Publications (1)

  • Duran-Cantolla J, Aizpuru F, Montserrat JM, Ballester E, Teran-Santos J, Aguirregomoscorta JI, Gonzalez M, Lloberes P, Masa JF, De La Pena M, Carrizo S, Mayos M, Barbe F; Spanish Sleep and Breathing Group. Continuous positive airway pressure as treatment for systemic hypertension in people with obstructive sleep apnoea: randomised controlled trial. BMJ. 2010 Nov 24;341:c5991. doi: 10.1136/bmj.c5991.

MeSH Terms

Conditions

Sleep Apnea SyndromesHypertension

Condition Hierarchy (Ancestors)

ApneaRespiration DisordersRespiratory Tract DiseasesSleep Disorders, IntrinsicDyssomniasSleep Wake DisordersNervous System DiseasesVascular DiseasesCardiovascular Diseases

Study Officials

  • JOAQUIN DURAN-CANTOLLA, MD

    Sociedad Española de Cirugía Torácica

    PRINCIPAL INVESTIGATOR

Central Study Contacts

JOAQUIN DURAN-CANTOLLA, MD

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER

Study Record Dates

First Submitted

September 12, 2005

First Posted

September 20, 2005

Study Start

January 1, 2005

Study Completion

September 1, 2005

Last Updated

December 23, 2005

Record last verified: 2005-09

Locations