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Sleep ApneaNCT00701038

Diagnosis and Treatment of Sleep Apnea in the Acute Exacerbation of Heart Failure

A study testing auto adjusting bi-level positive airway pressure device in people with Sleep Apnea and Heart Failure, run by Rami Khayat.

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

Congestive heart failure affects 2.3 percent of the population (approximately 4,900,000) with an incidence of 10 per 1,000 of the population after the age of 65 (1). The admission rate for patients with heart failure is on the rise, so is the mortality associated with it and its national annual bill, now exceeding $21… Read more about this study

Who is it for?
Ages 21 to 80 years
Conditions the study is for
Sleep Apnea, Heart Failure
What is being tested?
auto adjusting bi-level positive airway pressure device
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
54 participants
Where
No sites listed yet
Study dates
Aug 2006to Aug 2008
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 21 to 80 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

None listed.

Who cannot join

  • CSA
  • Already on CPAP
  • Hemodynamic instability
  • Acute respiratory failure
  • Neurological defect
  • Dialysis

About this study

Official title: The Role of Diagnosis and Treatment of Sleep Apnea in the Acute Exacerbation of Heart Failure

Congestive heart failure affects 2.3 percent of the population (approximately 4,900,000) with an incidence of 10 per 1,000 of the population after the age of 65 (1). The admission rate for patients with heart failure is on the rise, so is the mortality associated with it and its national annual bill, now exceeding $21 billion (1). Obstructive Sleep Apnea (OSA) is present in 11-37 percent of patients with heart failure (2,3), and tends to increase in severity when the heart failure is less controlled (4, 5). Therefore, the actual prevalence of OSA in patients hospitalized with acute heart failure is likely higher. There is now evidence that treatment of OSA with nasal Continuous Positive Pressure (nCPAP) in outpatients with stable heart failure improves left ventricular ejection fraction, and quality of life (6), and confers a reduction in fatal and non-fatal cardiovascular events (7). However, there has not been any evaluation of the role of diagnosis and treatment of OSA in patients hospitalized with acute heart failure. This uncertainty about the true prevalence and role of OSA in exacerbations of heart failure, and the role of its treatment in the acute setting may explain why aggressive diagnostic and therapeutic strategy for OSA in patients admitted to the hospital with acute heart failure is not part of the standard clinical practice in acute care centers. Given the rising admission rate, and mortality associated with heart failure, an evaluation of the role of OSA and its treatment in this patient population is highly significant.

Read the detailed description

OSA is associated with large negative swings in the intrathoracic pressure, significant increase in the sympathetic nerve activity and repetitive surges in blood pressure, along with episodic hypoxia and hypercapnea (8, 9). These autonomic and respiratory changes may increase the cardiac muscle workload, cardiac dysrrhythmia, and exacerbate ischemia (10,11,12). Treatment with continuous positive airway pressure (CPAP) is the most successful therapeutic modality available for obstructive sleep apnea. It is still not clear whether establishing the diagnosis of OSA and initiating treatment with CPAP while still in the hospital carries any benefit in the management of patients with acute heart failure. This study will evaluate the effect of work up and treatment of OSA on the outcome of patients hospitalized with acute congestive heart failure (CHF).

Being tested
auto adjusting bi-level positive airway pressure device
Keywords
Sleep apnea,, obstructive sleep apnea,, heart failure,, CHF
Medical subject headings
Sleep Apnea Syndromes, Heart Failure, Sleep Apnea, Obstructive

What participants receive

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

  • auto adjusting bi-level positive airway pressure deviceDevice

    Also called APAP, CPAP

    auto adjusting bi-level positive airway pressure device is provided for treatment of obstructive sleep apnea.

Study groups in NCT00701038
Study groupRoleWhat they receive
DeviceExperimentalProvided with an auto adjusting bi-level positive airway pressure device
Receives: Device: auto adjusting bi-level positive airway pressure device
ControlNo interventionNo device

What is being measured

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

  1. Left Ventricular Ejection Fraction Improvement

    Left ventricular function was assessed using doppler ultrasound. Positive increase in left ventricular function from baseline to 3 nights post treatment indicates potential beneficial impact of treatment on heart function.

    Measured: baseline and again after three nights in hospital

Timeline

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

  1. First posted19 Jun 2008 (estimated)
  2. Study startAug 2006
  3. Primary completionAug 2008
  4. Study completionAug 2008

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
54 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00701038
Sponsor's protocol ID
2005H0186
Status last verified
Jan 2013
First submitted
17 Jun 2008
Last updated
4 Feb 2013
Data monitoring committee
No

Publications

  • Heart Disease and Stroke-Statistics, American Heart Association, 2005 update

  • Javaheri S, Parker TJ, Liming JD, Corbett WS, Nishiyama H, Wexler L, Roselle GA. Sleep apnea in 81 ambulatory male patients with stable heart failure. Types and their prevalences, consequences, and presentations. Circulation. 1998 Jun 2;97(21):2154-9. doi: 10.1161/01.cir.97.21.2154.

    PubMed 9626176

  • Sin DD, Fitzgerald F, Parker JD, Newton G, Floras JS, Bradley TD. Risk factors for central and obstructive sleep apnea in 450 men and women with congestive heart failure. Am J Respir Crit Care Med. 1999 Oct;160(4):1101-6. doi: 10.1164/ajrccm.160.4.9903020.

    PubMed 10508793

  • Skinner MA, Choudhury MS, Homan SD, Cowan JO, Wilkins GT, Taylor DR. Accuracy of monitoring for sleep-related breathing disorders in the coronary care unit. Chest. 2005 Jan;127(1):66-71. doi: 10.1378/chest.127.1.66.

    PubMed 15653964

  • Solin P, Bergin P, Richardson M, Kaye DM, Walters EH, Naughton MT. Influence of pulmonary capillary wedge pressure on central apnea in heart failure. Circulation. 1999 Mar 30;99(12):1574-9. doi: 10.1161/01.cir.99.12.1574.

    PubMed 10096933

  • Mansfield DR, Gollogly NC, Kaye DM, Richardson M, Bergin P, Naughton MT. Controlled trial of continuous positive airway pressure in obstructive sleep apnea and heart failure. Am J Respir Crit Care Med. 2004 Feb 1;169(3):361-6. doi: 10.1164/rccm.200306-752OC. Epub 2003 Nov 3.

    PubMed 14597482

  • Marin JM, Carrizo SJ, Vicente E, Agusti AG. Long-term cardiovascular outcomes in men with obstructive sleep apnoea-hypopnoea with or without treatment with continuous positive airway pressure: an observational study. Lancet. 2005 Mar 19-25;365(9464):1046-53. doi: 10.1016/S0140-6736(05)71141-7.

    PubMed 15781100

  • Katragadda S, Xie A, Puleo D, Skatrud JB, Morgan BJ. Neural mechanism of the pressor response to obstructive and nonobstructive apnea. J Appl Physiol (1985). 1997 Dec;83(6):2048-54. doi: 10.1152/jappl.1997.83.6.2048.

    PubMed 9390980

  • Morgan BJ, Denahan T, Ebert TJ. Neurocirculatory consequences of negative intrathoracic pressure vs. asphyxia during voluntary apnea. J Appl Physiol (1985). 1993 Jun;74(6):2969-75. doi: 10.1152/jappl.1993.74.6.2969.

    PubMed 8365996

  • Magder SA, Lichtenstein S, Adelman AG. Effect of negative pleural pressure on left ventricular hemodynamics. Am J Cardiol. 1983 Sep 1;52(5):588-93. doi: 10.1016/0002-9149(83)90032-2.

    PubMed 6613883

  • Stoohs R, Guilleminault C. Cardiovascular changes associated with obstructive sleep apnea syndrome. J Appl Physiol (1985). 1992 Feb;72(2):583-9. doi: 10.1152/jappl.1992.72.2.583.

    PubMed 1559936

  • Hanly P, Sasson Z, Zuberi N, Lunn K. ST-segment depression during sleep in obstructive sleep apnea. Am J Cardiol. 1993 Jun 1;71(15):1341-5. doi: 10.1016/0002-9149(93)90552-n.

    PubMed 8498378

  • Roebuck T, Solin P, Kaye DM, Bergin P, Bailey M, Naughton MT. Increased long-term mortality in heart failure due to sleep apnoea is not yet proven. Eur Respir J. 2004 May;23(5):735-40. doi: 10.1183/09031936.04.00060404.

    PubMed 15176689

  • Khayat RN, Abraham WT, Patt B, Pu M, Jarjoura D. In-hospital treatment of obstructive sleep apnea during decompensation of heart failure. Chest. 2009 Oct;136(4):991-997. doi: 10.1378/chest.09-0597. Epub 2009 Jun 30.

    PubMed 19567491

Questions about this trial

What is this clinical trial studying?

A study testing auto adjusting bi-level positive airway pressure device in people with Sleep Apnea and Heart Failure, run by Rami Khayat.

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 0 inclusion and 6 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 4 Feb 2013. Status can change between updates, so confirm with the study contact before making plans.

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 Dec 2011). 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 Improvement (time frame: baseline and again after three nights in hospital). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00701038, which also lists 14 linked publications.

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 4 Feb 2013.

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