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Acute Effect of Continuous Positive Airway Pressure in Heart Failure

U

UPECLIN HC FM Botucatu Unesp

Status and phase

Completed
Phase 2

Conditions

Heart Failure

Treatments

Device: CPAP

Study type

Interventional

Funder types

Other

Identifiers

NCT01088854
upeclin/HC/FMB-Unesp-30

Details and patient eligibility

About

Acute effects of CPAP on diastolic function in patients with compensated heart failure (CHF) are unknown. The investigators hypothesized that acutely CPAP improves diastolic function, which is associated with increases exercise tolerance.

Objective: To evaluate the acute effects of CPAP on functional capacity and diastolic indices of patients with CHF. This is a randomized trial including 44 patients with compensated heart failure (functional classes II or III, NYHA). Patients will be allocated in CPAP(CPAP with 10cmH2O) or simulated CPAP (null pressure) after computed randomization, in a 1:1 ratio. All subjects shall complete a 6-minute walk test (6MWT) before and after CPAP (30 minutes; 10 cm H2O pressure). Doppler-echocardiogram will be performed before and at the end of CPAP. Wilcoxon or paired t tests were used to compare results, with significance level at p < 0.05.

Enrollment

2 patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • functional class II or III (NYHA)heart failure
  • agreement to participate in the study
  • absence of acute exacerbation of dyspnea
  • intact upper airway

Exclusion criteria

  • valvular heart disease
  • chest pain or unstable angina
  • acute myocardial infarction in the prior month
  • uncontrolled hypertension
  • atrial fibrillation or other arrhythmias
  • acute infection
  • orthopedic limitations
  • intolerance to CPAP mask

Trial design

Primary purpose

Diagnostic

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Single Blind

2 participants in 1 patient group

positive airway pressure
Experimental group
Treatment:
Device: CPAP

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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