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March 1, 1994Pacing and Clinical Electrophysiology

Apparent Extension of the Atrioventricular Interval Due to Sensor‐Based Algorithm Against Supraventricuiar Tachyarrhythmias

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Population

Patients with DDDR pacemakers, high atrial rate, and intact AV nodal conduction

Design

Case_series

Authors

SLSUM‐KIN LEUNGHong Kong College of TechnologyCLChu‐Pak LauUniversity of Hong KongWLWing‐Hung LeungHong Kong College of Technology

Discussion

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Overview

Apparent AV interval extension may reflect normal DDDR sensor behavior, not malfunction; case report leaves open prevalence and management implications.

Key Points

  • The aim is to investigate the extension of the atrioventricular interval due to sensor-based algorithms in response to tachyarrhythmias.
  • Evaluated the impact of sensor-based algorithms in DDDR pacemakers.
  • Monitored patients with high atrial rates and intact AV nodal conduction.
  • Observed unexpected AV interval prolongation with intrinsic conduction, longer than programmed AV intervals.
  • Identified this behavior as normal rather than indicative of pacemaker malfunction.

Structured PICO

P
Population
Patients with DDDR pacemakers, high atrial rate, and intact AV nodal conduction
I
Intervention
Sensor-based algorithms (conditional ventricular tracking limit or discrepant upper rate) in DDDR pacemakers
O
Outcome
Apparent extension of the AV interval on ECG

Clinicians should recognize that apparent AV interval extension in DDDR pacemakers with sensor-based algorithms during high atrial rates is a normal behavior, not a malfunction.

Cite This Study

LEUNG et al. (1994) studied this question.

synapsesocial.com/papers/6a20af34920e38fa09f9e809https://doi.org/10.1111/j.1540-8159.1994.tb01394.x
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1A New Feature for Control of Inappropriate High Rate Tracking in DDDR Pacemakers1990 · 26 citations
  2. 2Atrial Arrhythmia Management with Sensor Controlled Atrial Refractory Period and Automatic Mode Switching in Patients with Minute Ventilation Sensing Dual Chamber Rate Adaptive Pacemakers1992 · 41 citations
  3. 3The Use of Implantable Sensors for the Control of Pacemaker Mediated Tachycardias: A Comparative Evaluation Between Minute Ventilation Sensing and Acceleration Sensing Dual Chamber Rate Adaptive Pacemakers1992 · 22 citations
  4. 4Clinical Experience with an Activity Sensing DDDR Pacemaker Using an Accelerometer Sensor1992 · 41 citations
  5. 5Clinical Predictors and Natural History of Atrial Fibrillation in Patients with DDD Pacemakers1990 · 25 citations