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Heart FailureNCT00679549

The Role of Sleep Apnea in the Acute Exacerbation of Heart Failure

A study testing CPAP Therapy in people with Heart Failure and Obstructive Sleep Apnea, run by Ohio State University at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This study will evaluate whether treating sleep apnea while in the hospital would help heart failure, and assist recovery from the worsening of the heart function more than the current clinical standard of waiting for treatment until the subject have left the hospital. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
CPAP Therapy
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
154 participants
Where
1 siteUnited States
Study dates
Mar 2008to 22 Mar 2014
Phase
Interventional
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Previously unrecognized OSA with an Apnea Hypopnea Index (AHI) > 15 events per hour on the attended in-hospital sleep study. Patients with apnea index of less than 5 events / hour are excluded (see design consideration for rationale)
  • Projected length of stay 3 days or more on the morning following the cardio-respiratory sleep study
  • Ongoing or planned targeted treatment for heart failure including one of the following: IV diuretics, IV infusion of inotropes or vasodilators, or planned revascularization, or device therapy

Who cannot join

  • Patients who are already diagnosed with OSA
  • Patients with Central Sleep Apnea
  • Patients with diastolic only heart failure
  • Cardiogenic shock and hemodynamic instability with MAP less than 55 mmHg off vasopressors, or concurrently on vasopressor treatment, left ventricular assist devices, or intra-aortic Balloon Pump. Inotropic agents will not constitute an exclusion criterion. Patients will be eligible once off vasopressors.
  • Acute respiratory failure or insufficiency defined by P/F (PaO2/FIO2) ratio less than 250, or FIO2 requirement more than 50%
  • Overt neurological deficit
Show all 10Show fewer
  • Renal failure requiring renal replacement therapy; Patients will not be excluded if they were undergoing ultra-filtration for volume removal
  • Patients scheduled for procedures that will interfere with post randomization measurement: This includes scheduled coronary bypass surgery, or expected left ventricular assist device placement.
  • Patients who arrived from a long-term care facility or expected to be discharged to one; and patients who have very poor functional outcome precluding ability to use the CPAP device independently.
  • Patients on long term or "bridging" inotropic infusion, or short life expectancy due to concomitant illness

Trial locations and contacts

1 site in 1 country.

United States1 site
  • The Ohio State University

    Columbus, Ohio, 43212

Other trials in United States

About this study

This study will evaluate whether treating sleep apnea while in the hospital would help heart failure, and assist recovery from the worsening of the heart function more than the current clinical standard of waiting for treatment until the subject have left the hospital.

Heart failure affects more than 2% of the US population and is the only cardiovascular disorder with rising incidence. The annual cost of CHF in 2005 was $ 27.9 billion, large percentage of which is the cost of hospitalizations for exacerbation of CHF. Half of patients with CHF have some form of sleep apnea, and most of them go undiagnosed. Patients with CHF and OSA benefit from treatment with CPAP as an outpatient. The society can benefit from developing recommendations for approaching sleep apnea in the hospitalized CHF patient, which may shorten length of stay, improve functional status of discharged patient, and reduce rehospitalizations.

Read the detailed description

Target population:

Patients admitted to the OSU Heart Hospital with ADHF routinely undergo a cardiorespiratory sleep study to identify OSA. Patients with ADHF who are newly diagnosed with OSA during the same hospital stay are eligible for this study.

Enrollment:

Given the presence of significant previously unrecognized OSA in 62% of patients hospitalized with ADHF, we expect to need to screen 270 patient volunteers to recruit 170 patients with OSA.

Eligibility for randomization: The criteria for ADHF is admission diagnosis of heart failure; a chief complaint of dyspnea; and ejection fraction of 45% or less. Additionally, elevated left ventricular pressure as indicated by at least one sign and one symptom of volume overload (pedal edema, crackles, consistent chest X-ray, increased left ventricular end-diastolic diameter, or elevated BNP level) is required [46].

Being tested
CPAP Therapy
Keywords
Heart Failure, Obstructive Sleep Apnea, OSA, CHF, Sleep apnea, CHD
Medical subject headings
Heart Failure, Sleep Apnea, Obstructive, Sleep Apnea Syndromes

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • CPAP TherapyDevice

    Also called CPAP Device

    CPAP therapy is provided as an inpatient.

Study groups in NCT00679549
Study groupRoleWhat they receive
DEVICEExperimentalProvided CPAP as an inpatient
Receives: Device: CPAP Therapy
ControlNo interventionNo device provided

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Left Ventricular Ejection Fraction (LVEF)

    Using the modified Simpson method. LVEF is calculated as (Left ventricular end diastolic volume (LVEDV)-left ventricular end systolic volume (LVESV)/left ventricular end diastolic volume (LVEDV) *100.

    the measurement unit of LVEF is %.

    Measured: at baseline and 3 days post randomization

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted19 May 2008 (estimated)
  2. Study startMar 2008
  3. Primary completion22 Mar 2014
  4. Study completion22 Mar 2014

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
154 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00679549
Sponsor's protocol ID
2008H0011
Status last verified
Apr 2019
First submitted
15 May 2008
Last updated
14 May 2019
Data monitoring committee
Yes

Questions about this trial

What is this clinical trial studying?

A study testing CPAP Therapy in people with Heart Failure and Obstructive Sleep Apnea, run by Ohio State University at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 14 May 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Yes. Results are posted in the registry (first posted 14 May 2019). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Left Ventricular Ejection Fraction (LVEF) (time frame: at baseline and 3 days post randomization). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 14 May 2019.

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