Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Automatic refractory period.

M J Begemann1, W Boute

  • 1Clinical Research, Vitatron Medical BV, Dieren, The Netherlands.

Pacing and Clinical Electrophysiology : PACE
|November 1, 1988
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Sudden rate drop intervention rate level in patients with new 'clarity' pacemakers and carotid sinus syndrome.

Medical science monitor : international medical journal of experimental and clinical research·2001
Same author

Steady-state and dynamic behavior of ventricular repolarization and refractoriness in the dog: the effect of multiple cycle length changes and d-sotalol administration.

Pacing and clinical electrophysiology : PACE·1998
Same author

Analysis of atrial sensed far-field ventricular signals: a reassessment.

Pacing and clinical electrophysiology : PACE·1997
Same author

Avoiding atrial undersensing by assessment of P wave amplitude histogram data.

Pacing and clinical electrophysiology : PACE·1994
Same author

Inter- and intraindividual variations in shortening of ventricular effective refractory period after an abrupt decrease in pacing cycle length.

Pacing and clinical electrophysiology : PACE·1994
Same author

The influence of test window width on atrial rhythm classification in dual chamber pacemakers.

Pacing and clinical electrophysiology : PACE·1992
Same journal

A Case of Permanent Pacemaker Implantation via the Epicardial Approach Using the 3830 Lead in an 11-Day-Old Neonate (With Follow-Up of the Above Case).

Pacing and clinical electrophysiology : PACE·2026
Same journal

Cryoballoon Versus Radiofrequency Ablation for Persistent Atrial Fibrillation: Meta-Analysis of Randomized Trials.

Pacing and clinical electrophysiology : PACE·2026
Same journal

Tilt Test Duration in Suspected Vasovagal Syncope: Temporal Patterns and Diagnostic Yield in Patients From Central China.

Pacing and clinical electrophysiology : PACE·2026
Same journal

Combined Leadless Pacing and Subcutaneous ICD Therapy in Long QT Syndromes.

Pacing and clinical electrophysiology : PACE·2026
Same journal

Association of Anesthesia Modality With Procedural Parameters and Clinical Outcomes in PVI for Atrial Fibrillation.

Pacing and clinical electrophysiology : PACE·2026
Same journal

Zero-Fluoroscopy Cryoballoon Ablation for Paroxysmal Atrial Fibrillation in a Patient With Dextrocardia: A Case Report.

Pacing and clinical electrophysiology : PACE·2026
See all related articles

Pacemaker refractory periods can now be automatically adjusted using the stimulus-to-T-wave interval. This innovation simplifies pacemaker programming and enables higher pacing rates, improving patient care.

Area of Science:

  • Biomedical Engineering
  • Cardiology
  • Medical Devices

Background:

  • Pacemaker technology has advanced, increasing complexity and demanding more automated functions.
  • Automating pacemaker programming and follow-up procedures is a growing need.

Purpose of the Study:

  • To investigate the relationship between pacing threshold, coupling interval, and T-wave morphology.
  • To determine the optimal method for automatically adjusting pacemaker refractory periods.

Main Methods:

  • Measured pacing threshold relative to the coupling interval and T-wave morphology.
  • Identified the stimulus-to-T-wave (stim-T) interval as a key determinant of pacing threshold.

Main Results:

  • Pacing threshold is constant when the stimulus is distant from the T-wave.

Related Experiment Videos

  • Pacing threshold decreases slightly as the stimulus approaches the T-wave and sharply increases at the T-wave peak.
  • The refractory period correlates with the stim-T interval.

    • Conclusions:

    • The stim-T interval can be used to automatically adjust the pace refractory period in pacemakers like the Rhythmyx.
    • Automatic adjustment of the refractory period allows for higher pacing rates due to rate-dependent shortening.
    • Future applications include antitachycardia pacing to prevent pacing within refractory or vulnerable zones.