Working… Menu

Comparison of CPAP With SOMNOventCR in Patients With Underlying Heart Disease, Combined OSA and CSR (VCR)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00811668
Recruitment Status : Completed
First Posted : December 19, 2008
Last Update Posted : August 2, 2011
Information provided by:
Wissenschaftliches Institut Bethanien e.V

Brief Summary:

In patients with underlying heart diseases like hypertensive heart disease, coronary heart disease or dilative cardiomyopathy obstructive sleep-apnea, central sleep-apnea and Cheyne-Stokes-respiration are common finding in polysomnography.

In a lot of these patients it is neither a purely obstructive sleep-apnea syndrome nor a complete Cheyne-Stokes-respiration but a combination of both sleep related respiratory disturbances.

Previous studies showed an improvement of the central respiratory disorder, for example Cheyne-Stokes-respiration, under continuous positive pressure breathing (CPAP) and an improvement of the left ventricular pump function. (Naughton 1995, Tkacova 1997).

However, the recently published CanPAP study could not prove any improvement in the mortality among CPAP therapy patients in comparison to the optimal medical treatment, although under this therapy, the number of breathing disturbances, the oxygen saturation at night and the ejection fraction of the left ventricle showed a significant improvement.(Bradley 2005)

Earlier studies proved the adaptive servo ventilation to be an effective therapy for patients with central sleep-apnea and Cheyne-Stokes-respiration respectively. (Teschler 2001) Teschler's study showed that the adaptive servo ventilation therapy with a reduction of central sleep apnea down to 10/hours succeeded. With the SOMNOvent CR a new therapy-algorithm has been developed for the adaptive servo ventilation in patients with obstructive sleep apnea and Cheyne-Stokes-respiration with underlying heart disease. In the first validation study this therapy was very effective and presented only few adverse effects in the patients. (Galetke 2007)

The goal of the study was to compare this new therapeutic option (SOMNOvent CR) with the established method of continuous positive airway pressure (CPAP) in patients with combination of obstructive sleep-apnea syndrome and Cheyne-Stokes-respiration with underlying heart disease.

Condition or disease Intervention/treatment Phase
Heart Diseases Sleep Apnea, Central Sleep Apnea, Obstructive Device: CPAP before SOMNOVentCR Device: SOMNOventCR before CPAP Not Applicable

Detailed Description:

Patients who meet all the above mentioned criteria and who were diagnosed as sleep-apnoea syndrome patients in our hospital were asked to participate in the study.

We divided the patients in two groups:

Group 1: started with CPAP and continued with SOMNOvent CR Group 2: began with SOMNOvent CR and ended with CPAP

First of all a CPAP-titration was applied to both fixed groups during the second night. During the third night they received either the CPAP- pressure (first group) or the adaptive servo ventilation (second group. The patients were discharged from the hospital continuing with the procedure of the third night.

After four weeks a new admission for the sleep laboratory was necessary and, during the first night, a control investigation with the procedure of the last four weeks. The procedure changed during the next night, so that the patients of the first group now slept with the SOMNOventCR-device and the patients of the second group with the CPAP-device.

After a wash-out-period of a week and a four-week treatment with the last procedure a final in-hospital polysomnography was performed in which adaptive servo ventilation was applied to the first group and fixed CPAP to the second group.

After the study ended, the patients received the therapy procedure which was the most effective and which was better tolerated.

The following analyses were carried out in addition to the polysomnographic measurements:

Admission 1: Berlin questionnaire, European sleep questionnaire, echocardiography, 6 minute walking test, patients questionnaire.

Admission 2: ESS, Berlin questionnaire, echocardiography, 6 minute walking test, patients´ questionnaire.

After the wash-out-period: ESS, Berlin questionnaire, patients questionnaire.

Admission 4: ESS, Berlin questionnaire, echocardiography, 6 minute walking test, patients questionnaire.

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 40 participants
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Single (Investigator)
Primary Purpose: Treatment
Official Title: Crossover Comparison of Treatment With Continuous Positive Airway Pressure and Treatment With Adaptive Servo Ventilation (SOMNOventCR) in Patients With Underlying Heart Disease, Combined Obstructive Sleep Apnea and Cheyne-Stokes Respiration.
Study Start Date : May 2008
Actual Primary Completion Date : February 2009
Actual Study Completion Date : October 2009

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: CPAP before SOMNOVentCR
started with CPAP and continued with SOMNOvent CR
Device: CPAP before SOMNOVentCR
4 weeks CPAP treatment, 1 week wash out period, 4 weeks SOMNOventCR treatment

Experimental: SOMNOVentCR before CPAP
began with SOMNOvent CR and ended with CPAP
Device: SOMNOventCR before CPAP
4 weeks SOMNOventCR treatment, 1 week wash out period, 4 weeks CPAP treatment

Primary Outcome Measures :
  1. central apnea-hypopnea-index [ Time Frame: February 2009 ]

Secondary Outcome Measures :
  1. Total apnea-hypopnea-index, minimum and mean oxygen saturation, compliance, subjective satisfaction with the therapy (questionnaire), left ventricular ejection fraction , six minutes walking distances. [ Time Frame: February 2009 ]

Information from the National Library of Medicine

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, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Men and women > 18 years.
  • Diagnosis of arterial hypertension or a coronary heart disease or a dilative cardiomyopathy
  • Combined sleep-apnea-syndrome with a total value of AHI>15 per hour and a rate up to 20% of central events or periodic breathing.

Exclusion Criteria:

  • Heart failure NYHA-CLASS IV.
  • Myocardial infarction or unstable angina pectoris or cardiac surgery within the last three months.
  • Apnea-hypopnea-index < 15 per hour.
  • Obstructive breathing disturbances up to 80%.
  • Pregnancy.
  • Absence of declaration of consent.
  • Malign diseases.
  • Serious (Severe) chronic oxygen-requiring pulmonary illness.
  • Age under 18 years.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00811668

Sponsors and Collaborators
Wissenschaftliches Institut Bethanien e.V
Layout table for investigator information
Study Chair: Wolfgang Galetke, PD Dr.
Study Director: Winfried J. Randerath, Prof. Dr.

Layout table for additonal information
Responsible Party: Prof. Dr. Randerath, Institut für Pneumologie an der Universität Witten/Herdecke Identifier: NCT00811668     History of Changes
Other Study ID Numbers: WI_VentCR_13/2008
First Posted: December 19, 2008    Key Record Dates
Last Update Posted: August 2, 2011
Last Verified: August 2011
Keywords provided by Wissenschaftliches Institut Bethanien e.V:
Sleep Apnea Syndromes
heart diseases
Additional relevant MeSH terms:
Layout table for MeSH terms
Sleep Apnea Syndromes
Sleep Apnea, Obstructive
Sleep Apnea, Central
Heart Diseases
Respiration Disorders
Respiratory Tract Diseases
Signs and Symptoms, Respiratory
Signs and Symptoms
Sleep Disorders, Intrinsic
Sleep Wake Disorders
Nervous System Diseases
Cardiovascular Diseases