NCT00551499

Brief Summary

The primary objective of this study is to compare the Apnea- Hypopnea Index in HF patients with concomitant CSA, after 12 weeks of CRT alone to CRT in combination with one night of overdrive pacing. Secondary objectives are to evaluate the effects of a single night of overdrive pacing applied after 12 weeks of CRT vs. CRT alone on breathing events, sleeping events, and neurohormonal markers. An additional secondary objective of the study is to compare the efficacy of CRT in HF patients with concomitant CSA to HF patients without concomitant CSA.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
44

participants targeted

Target at P25-P50 for phase_4 heart-failure

Timeline
Completed

Started Jun 2005

Shorter than P25 for phase_4 heart-failure

Geographic Reach
1 country

2 active sites

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

June 1, 2005

Completed
1.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2006

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2006

Completed
11 months until next milestone

First Submitted

Initial submission to the registry

October 30, 2007

Completed
1 day until next milestone

First Posted

Study publicly available on registry

October 31, 2007

Completed
Last Updated

July 3, 2025

Status Verified

April 1, 2024

Enrollment Period

1.5 years

First QC Date

October 30, 2007

Last Update Submit

June 30, 2025

Conditions

Keywords

Sleep Apnea, CRT

Outcome Measures

Primary Outcomes (1)

  • AHI

    To demonstrate that a single night of overdrive pacing applied after 12 weeks of cardiac resynchronization therapy in comparison to cardiac resynchronization alone will improve sleep apnea as measured by Apnea- hypopnea- index (AHI)

    12 weeks

Secondary Outcomes (5)

  • NYHA class

    12 weeks

  • Echocardiographic parameter

    12 weeks

  • Neurohormonal parameter

    12 weeks

  • Clinical parameter

    12 weeks

  • Quality of Life

    12 weeks

Study Arms (2)

CRT for patients with CSA

NO INTERVENTION

Patients suffering from HF with central Sleep Apnea (CSA) programmed to DDD/45 (CRT) for 12 weeks. Intervention is CRT.

CRT + AOP for patients with CSA

ACTIVE COMPARATOR

Patients suffering from HF with central Sleep Apnea programmed to DDD/+15 bpm nocturnal rate (CRT + AOP) for 12 weeks. Intervention is the AOP in addition to CRT.

Device: CRT + AOP

Interventions

CRT + AOPDEVICE

The CSA group will undergo 2 sleep evaluation on two consecutive nights, during which the device will be programmed according to the randomization scheme (one night CRT, DDD/45 and the other CRT, DDD/15 bpm over mean nocturnal heart rate). The mean nocturnal heart rate over the last week is derived from the device memory.

CRT + AOP for patients with CSA

Eligibility Criteria

Age18 Years - 100 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Patients with documented clinical history of symptomatic but stable congestive heart failure, NYHA III or NYHA IV, of at least six weeks duration.
  • Patient has an indication for a CRT device, or patients with previous pacemaker indication, except Sick Sinus Syndrome, and currently in need for an upgrade to a CRT device
  • Patient is scheduled for the implantation of a CRT device
  • Patient is over 18 years of age
  • Patient provides Informed Consent

You may not qualify if:

  • Inability to complete overnight sleep study as specified by the protocol
  • Myocardial infarction or coronary revascularization procedure within 2 calendar months prior to enrollment
  • Planned or strong likelihood of cardiac surgery within 4 months following enrollment
  • A spirometric confirmation of obstructive lung disease
  • Evidence of obstructive sleep apnea at baseline polysomnography
  • Body mass index \>30 kg/m²
  • Pregnant women

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (2)

Medizinische Klinik und Poliklinik II Universitätsklinikum, University of Bonn

Bonn, 53105, Germany

Location

Georg-August-Universität, Department of Cardiology and Pneumology

Göttingen, D-37075, Germany

Location

MeSH Terms

Conditions

Heart FailureSleep Apnea, CentralSleep Apnea SyndromesCreatine deficiency, X-linked

Condition Hierarchy (Ancestors)

Heart DiseasesCardiovascular DiseasesApneaRespiration DisordersRespiratory Tract DiseasesSleep Disorders, IntrinsicDyssomniasSleep Wake DisordersNervous System Diseases

Study Officials

  • S Andreas, Prof. Dr

    Georg-August-Universität, Göttingen, Department of Cardiology and Pneumology, Robert-Koch Str. 40, 37075 Göttingen, Germany

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 4
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Purpose
TREATMENT
Intervention Model
CROSSOVER
Model Details: Comparing effect of CRT in patients with and without CSA + comparing effect of AOP in combination with CRT in patients with CSA
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

October 30, 2007

First Posted

October 31, 2007

Study Start

June 1, 2005

Primary Completion

December 1, 2006

Study Completion

December 1, 2006

Last Updated

July 3, 2025

Record last verified: 2024-04

Locations