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Sleep-Disordered Breathing in Heart Failure - The SchlaHF-Registry

This study is ongoing, but not recruiting participants.
Information provided by (Responsible Party):
ResMed Identifier:
First received: December 23, 2011
Last updated: February 3, 2014
Last verified: February 2014

Objective target of the registry is to investigate the prevalence of SDB as well as the clinical characteristics of patients with and without SDB as well as the predominant type of sdb.

For this purpose data from patients suffering from chronic, symptomatic heart failure with impaired left ventricular ejection fraction will be collected prospectively.

Congestive Heart Failure
Left Ventricular Systolic Dysfunction

Study Type: Observational [Patient Registry]
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Target Follow-Up Duration: 4 Weeks
Official Title: Prevalence, Clinical Characteristics and Type of Sleep-disordered Breathing in Patients With Chronic, Symptomatic, Systolic Heart Failure

Resource links provided by NLM:

Further study details as provided by ResMed:

Estimated Enrollment: 12000
Study Start Date: November 2007
Estimated Study Completion Date: May 2015
Estimated Primary Completion Date: May 2015 (Final data collection date for primary outcome measure)
Detailed Description:

Despite recent advances in pharmacological treatment, congestive heart failure (CHF) continues to cause debilitating symptoms, frequent hospital admissions and a high mortality. Despite of therapy with beta-blockers and ACE-inhibitors many patients have persistent symptoms and most will eventually die of cardiovascular causes, often from progressive heart failure.

Sleep Disordered Breathing (SDB) is known to cause consequences, which have negative effects on heart failure.

Objective target of the registry is to investigate the prevalence of SDB, clinical characteristics, symptoms and the degree and type of SDB in patients with chronic HF.

For this purpose data from patients with chronic heart failure will be collected prospectively.In the registry several cardiologists in private practice or hospital and cooperating sleep laboratories shall participate.

Cardiologists screen patients with Chronic Heart Failure (chronic HF) prospectively. In case of suffering from chronic HF for at least 12 weeks since diagnosis, with NYHA III-IV or NYHA class II with at least one hospitalisation for HF in the last 12 months. Written informed consent for data privacy aspects must be obtained before screening for SDB. Patients who satisfy to all inclusion- and exclusion criteria will be included consecutively into the registry.


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population

Adult patients with Chronic Heart Failure with LVEF ≤ 45% and NYHA III-IV or NYHA class II with at least one hospitalisation for HF in the last 24 months.


Inclusion Criteria:

  • Patients must be over 18
  • Chronic heart failure (at least 12 weeks since diagnosis) according to the current applicable guidelines
  • Left ventricular systolic dysfunction (LVEF ≤ 45% by imaging method such as echocardiography, radionuclide angiography, left ventriculography, or cardiac magnetic resonance imaging) documented less than 12 weeks
  • NYHA class III or IV at the time of inclusion or NYHA class II with at least one hospitalisation for HF in the last 24 months
  • Patient is able to fully understand study information and signed informed consent

Exclusion Criteria:

  • Life expectancy < 1 year for diseases unrelated to chronic HF
  • Cardiac surgery, Percutaneous coronary intervention (PCI), Myocardial Infarction (MI) or unstable angina within 6 months
  • CRT-implantation (either CRT-D or CRT-P) scheduled or within 6 months
  • Transient ischemic attack (TIA) or Stroke within 3 months
  • Hemodynamically significant uncorrected primary valvular heart disease, obstructive or regurgitant, or any valvular disease expected to lead to surgery
  • Acute myocarditis/pericarditis within 6 months
  • Current CPAP or bilevel therapy
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01500759

  Show 199 Study Locations
Sponsors and Collaborators
Principal Investigator: Erland Erdmann, Prof Klinikum der Universität zu Köln
Principal Investigator: Helmut Teschler, Prof Ruhrlandklinik Essen
Study Director: Holger Woehrle, MD ResMed
  More Information

No publications provided

Responsible Party: ResMed Identifier: NCT01500759     History of Changes
Other Study ID Numbers: 001
Study First Received: December 23, 2011
Last Updated: February 3, 2014
Health Authority: Germany: Ethics Commission
Australia: Human Research Ethics Committee

Keywords provided by ResMed:
chronic heart failure
heart failure
sleep-disordered breathing
cheyne stokes
central sleep apnoea
sleep apnoea

Additional relevant MeSH terms:
Heart Failure
Respiratory Aspiration
Ventricular Dysfunction, Left
Cardiovascular Diseases
Heart Diseases
Pathologic Processes
Respiration Disorders
Respiratory Tract Diseases
Ventricular Dysfunction processed this record on February 25, 2015