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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..
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Nasal continuos positive airway pressure | Device |
| Measure | Description | Time Frame |
|---|---|---|
| Effect of CPAP in 24 hours blood pressure monitoring | ||
| effect of CPAP y quality of life and clinical aspects |
| Measure | Description | Time Frame |
|---|---|---|
| effect of CPAP in biologic mediators |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| JOAQUIN DURAN-CANTOLLA, MD | Contact | 34 945 007308 | joaquin.duran@wanadoo.es |
| Name | Affiliation | Role |
|---|---|---|
| JOAQUIN DURAN-CANTOLLA, MD | Sociedad Española de CirugÃa Torácica | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Unit of Research. Hospital Txagorritxu | Recruiting | Vitoria-Gasteiz | ALAVA | 01009 | Spain |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 21106625 | Derived | 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. |
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| ID | Term |
|---|---|
| D012891 | Sleep Apnea Syndromes |
| D006973 | Hypertension |
| ID | Term |
|---|---|
| D001049 | Apnea |
| D012120 | Respiration Disorders |
| D012140 | Respiratory Tract Diseases |
| D020919 | Sleep Disorders, Intrinsic |
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| D020920 |
| Dyssomnias |
| D012893 | Sleep Wake Disorders |
| D009422 | Nervous System Diseases |
| D014652 | Vascular Diseases |
| D002318 | Cardiovascular Diseases |