The Effect of Continuous Positive Airway Pressure on Diastolic Function in Patients With Obstructive Sleep Apnea

January 24, 2017 updated by: Yonsei University
The association of obstructive sleep apnea (OSA) and cardiac diastolic dysfunction have been reported, and improvement of diastolic function after continuous positive airway pressure (CPAP) in OSA patients was observed. However, more detailed analysis of diastolic function by supine bicycle exercise echocardiography is lacking. The investigators hypothesized that 3 months of CPAP therapy in OSA patients will significantly improve diastolic functional parameters measured by exercise stress echocardiography. Patients with severe OSA (Apnea-hypopnea index > 30) will be included in this study, and randomized to CPAP versus sham-CPAP group by 1:1 ratio. Supine bicycle exercise echocardiography, pulse wave velocity, 24 hours ambulatory blood pressure (BP), central BP will be checked before and after CPAP therapy and parameters will be compared.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

60

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Korea, Republic of
      • Seoul, Korea, Republic of, 120-752
        • Division of Cardiology, Yonsei Cardiovascular Hospital, Yonsei University College of Medicine

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

20 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patietns≥20 and ≤75 years-old
  • Patients who diagnosed as obstructive sleep apnea and AHI>30 on polysomnography

Exclusion Criteria:

  • Age < 20 years-old
  • Left ventricular dysfunction (LVEF<50%) or structural heart disease on transthoracic echocardiography
  • Diabetes mellitus
  • Significant cardiac valvular disease (≥moderate)
  • Severe hypertension (>180/110mmHg)
  • Moderate or severe kidney disease (eGFR < 60 mL/min )
  • Clinically significant liver disease
  • History of coronary artery disease
  • malignancy or autoimmune disease
  • Acute/chronic infection status
  • Pregnant status
  • Patients taking anxiolytics or sedatives

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: CPAP group
Device: CPAP group
Enrolled patients are randomized to CPAP group or sham-CPAP group by 1:1 ratio. The patients in each group will undergo CPAP or sham-CPAP for 3 months.
Sham Comparator: sham-CPAP group
Device: sham-CPAP group
Enrolled patients are randomized to CPAP group or sham-CPAP group by 1:1 ratio. The patients in each group will undergo CPAP or sham-CPAP for 3 months. Sham CPAP consists of a CPAP machine that is modified to include a large hidden leak in the exhaust port of the mask to disperse the therapeutic pressure.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
The differences of supine bicycle exercise echocardiographic parameters and PWV before and after CPAP therapy, and between CPAP group and sham CPAP group.
Time Frame: after 3 months intervention (CPAP)
The differences of supine bicycle exercise echocardiogrphic parameters (diastolic function grade, mitral inflow parameters, mitral tissue doppler parameters, E/E') and PWV before and after CPAP therapy, and between CPAP group and sham CPAP group.
after 3 months intervention (CPAP)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Yonsei University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

May 1, 2013

Primary Completion (Actual)

June 1, 2016

Study Completion (Actual)

June 1, 2016

Study Registration Dates

First Submitted

May 10, 2013

First Submitted That Met QC Criteria

May 14, 2013

First Posted (Estimate)

May 15, 2013

Study Record Updates

Last Update Posted (Estimate)

January 26, 2017

Last Update Submitted That Met QC Criteria

January 24, 2017

Last Verified

January 1, 2017

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 1-2013-0021

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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