- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01970423
Sleep Apnea and CRT Upgrading
Central Sleep Apnea and New-onset Cardiac Resynchronization in Patients With Conventional Pacemaker or ICD Therapy: a Multicenter, Randomized Clinical Trial
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Within the last decade cardiac resynchronization therapy (CRT) has been proven to be an effective therapy to reduce morbidity and mortality in chronic heart failure patients with wide QRS complex, in particular complete left bundle branch block. New indications have recently been established, including patients with mild symptoms and patients in need of conventional pacing such as high-grade atrioventricular block.
More than half - up to 80% - of patients with heart failure suffer from concomitant sleep apnea (SA), which further worsens symptoms and prognosis. Cardiac resynchronization therapy may ameliorate sleep apnea, but only the central form of sleep apnea (CSA). However, only very small uncontrolled studies with mainly less than 20 patients have been reported so far concerning the interactions between CRT and sleep apnea, and no data are available in patients with conventional right ventricular pacing undergoing upgrading to CRT.
Therefore, we want to perform a study called UPGRADE which is characterized
- being the first randomized study comparing the effects of new-onset cardiac resynchronization therapy on moderate and severe central sleep apnea, defined by an AHI ≥ 15/h as assessed by polysomnography in patients with conventional right ventricular pacing which is known to decrease cardiac function, induce heart failure and atrial fibrillation
- using a new technology called AP Scan® which enables continuous and reliable monitoring of sleep-disordered breathing (SDB); this technology is further validated with polysomnography, the gold standard in the diagnosis and follow-up in patients with sleep apnea
Unfortunately, one third of patients still do not benefit from CRT (so-called non-responders). On the other hand, up to 20% of patients greatly benefit and completely recover in terms of normalization of left ventricular ejection fraction and/or functional capacity (so-called super-responders). Research is urgently needed to decrease the number of non-responders and increase the number of super-responders.
Patient selection is still based on QRS duration and its morphology. Echocardiography and other imaging techniques for mechanical dyssynchrony assessment have failed to be a useful predictor for adequate patient selection. Therefore, we further want to test whether CRT itself does not only improve concomitant sleep apnea, but also if preexisting sleep apnea predicts the response to CRT in patients with previously conventional right-ventricular pacing undergoing an upgrade to CRT by additional implantation of a left ventricular lead.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
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Innsbruck, Austria, 6020
- Medical University Innsbruck, Department for Internal Medicine III
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Innsbruck, Austria, 6020
- Medical University Innsbruck, Internal Medicine III (Cardiology & Angiology)
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- left ventricular ejection fraction < 50%
- implanted conventional pacemaker or ICD with a right ventricular pacing rate > 40% or planned "ablate and pace" therapy
- age 40 - 85 years
Exclusion Criteria:
- NYAH IV
- liver cirrhosis
- renal insufficiency (GFR < 30ml/min/1,73m²)
- expectancy of life < 1 year
- premenopausal woman
- drug or substance abuse
- hyperthyreosis
- custodianship
- CM allergy
- any condition that may compromise the compliance of the patient, or would preclude the patient from successful completion of the study
- plaster allergy
- enrollment in another clinical trial
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Other: CRT
After randomization and polysomnography the CRT will get activated.
After 3-5 months cross over to conventional right ventricular stimulation.
|
The new device is the first CRT-P that relies on a physiological parameter, respiration, to allow the pacemaker to follow the patient's breath and help create an appropriate pacing rate.
Other Names:
|
Other: Right Ventricular Stimulation
After randomization and polysomnography the conventional right ventricular stimulation will get activated.
After 3-5 months cross over to CRT activation.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Improvement of central sleep apnea
Time Frame: January 2014 - June 2021
|
improvement of moderate / severe central sleep apnea (AHI ≥ 15/h) due to new onset CRT as compared to ongoing conventional right ventricular pacing
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January 2014 - June 2021
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Validation of the AP scan by the gold standard polysomnography
Time Frame: January 2014 - June 2021
|
January 2014 - June 2021
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
CRT response
Time Frame: January 2014 - June 2021
|
secondary endpoints = CRT response according to pre-existing sleep apnea (RDI 0-14/h versus ≥ 15/h)
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January 2014 - June 2021
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Wolfgang Dichtl, MD, Medical University of Innsbruck
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- UPGRADE
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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