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[Dual sensor-controlled rate adaptation in non-dynamical exercise].

B Sievers1, M Meine1, P Pfitzner1

  • 1Medizinische Klinik II Universitätsklinik Marienhospital Ruhr-Universität Bochum Hölkeskampring 40 44625 Herne, Germany Tel.: +492323-4990 Fax: +492323-499-301 E-Mail: Burkhard.Sievers@ruhr-uni-bochum.de, Germany.

Herzschrittmachertherapie & Elektrophysiologie
|July 20, 2016
PubMed
Summary
This summary is machine-generated.

Dual sensor pacemakers (QT + activity) showed inadequate heart rate response in patients with chronotropic incompetence during mental and physical stress tests. This dual sensor combination did not meet expectations for physiological rate adaptation.

Keywords:
Key words Rate responsive pacemakercross checkingdual sensor

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Area of Science:

  • Cardiology
  • Biomedical Engineering
  • Physiology

Context:

  • Pacemaker therapy aims for physiological rate adaptation using single or dual sensor systems.
  • Chronotropic incompetence affects heart rate response to physiological demands.
  • Dual sensor systems (QT + activity) are evaluated for pacemaker rate adaptation.

Purpose:

  • To assess the heart rate reaction and adaptability of a dual sensor (QT + activity) system in pacemaker patients.
  • To compare the sensor-controlled heart rate response in patients with chronotropic incompetence to a control group.
  • To evaluate the efficacy of the QT + activity sensor combination for physiological rate adaptation.

Summary:

  • Nine patients with chronotropic incompetence received VVIR or DDDR pacemakers with a QT + activity dual sensor.
  • Patients underwent mental, isometric, and activity (tap) tests, with heart rate measured via ECG.
  • Pacemaker patients exhibited inadequate heart rate responses across all tests compared to controls, failing to meet adaptation expectations.

Impact:

  • The QT + activity dual sensor system demonstrated insufficient heart rate response for physiological adaptation in pacemaker patients.
  • Current dual sensor technology (QT + activity) may not fulfill the requirements for effective chronotropic compensation.
  • Findings suggest a need for improved sensor combinations or algorithms in pacemaker therapy for better rate responsiveness.