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Closed Loop Stimulation, Cognitive Performance, and Quality of Life in Pacemaker Patients

COGNITION - Cognitive Performance & Closed Loop Stimulation

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00323661
Acronym
COGNITION
Enrollment
405
Registered
2006-05-09
Start date
2006-05-31
Completion date
2011-03-31
Last updated
2012-02-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cardiac Pacing, Artificial

Keywords

Pacing, Rate-adaptive, Quality of life, Cognitive performance, Atrial fibrillation, Pacemaker sensor

Brief summary

The purpose of this study is to compare the influence of accelerometer-based rate adaptation and Closed Loop Stimulation on cognitive performance and quality of life in pacemaker patients.

Detailed description

Within the scope of a usual follow-up schedule the influence of the mode of rate-adaptation on cognitive performance of pacemaker patients will be analysed. Accelerometer sensor will be compared with Closed Loop Stimulation over 2 years. The cognitive performance will be measured by means of a standardized psychometric test. The occurrence of atrial fibrillation and serious adverse events, patient self-assessment and quality of life will be evaluated. An analysis of the telemonitored (Home Monitoring) data will be performed in order to identify predictors of changes or differences in cognitive performance.

Interventions

DEVICERate-adaptive pacemaker: accelerometer

Accelerometer based pacing rate adaptation

DEVICERate-adaptive pacemaker: Closed Loop Stimulation

Closed Loop Stimulation (CLS) is a unique concept in rate-adaptive pacing that uses the natural cardiovascular control loop to determine the appropriate pacing rate. Closed Loop Stimulation is the only rate-adaptive system responding to mental stress and thereby assuring optimal cerebral perfusion in everyday activity.

Sponsors

Biotronik SE & Co. KG
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Subject)

Eligibility

Sex/Gender
ALL
Age
55 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients with a CYLOS pacemaker (implantation within the last 3 to 6 weeks) * Closed Loop Stimulation mode activated since pre-hospital discharge * Patients with chronotropic incompetence according to physician's judgment * Maximum sinus rate \< 100 beats per minute (bpm) OR percentage of atrial pacing ≥ 25% * Patients suitable for rate-adaptive pacing for at least 2 years * Patient informed consent

Exclusion criteria

* Age under 55 * Pregnant and breast-feeding women * Patients who are already enrolled in another study

Design outcomes

Primary

MeasureTime frame
Cognitive performance assessed by the Number Connection Test24 months

Secondary

MeasureTime frame
Quality of life assessed by the SF-0812 months and 24 months
occurrence of atrial fibrillation12 months and 24 months
occurrence of serious adverse events12 months and 24 months
self-assessment of general well-being, mental and physical performance assessed by Visual Analogue Scales12 months and 24 months
Home Monitoring data24 months

Countries

Australia, Austria, Brazil, Canada, Czechia, Germany, Hong Kong, Israel, Slovakia, Spain

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026