Related Experiment Video
Updated: Feb 16, 2026

Optimization of Transesophageal Atrial Pacing to Assess Atrial Fibrillation Susceptibility in Mice
Published on: June 29, 2022
Pacing failure caused by automatic pacing threshold adjustment system
Jun Kishihara1, Shinichi Niwano1, Hidehira Fukaya1
1Department of Cardiovascular Medicine, Kitasato University School of Medicine, Sagamihara, Japan.
Abstract:
Ventricular capture management is an automatic pacing threshold adjustment algorithm that automatically measures pacing threshold through detection of the evoked response after a pacing stimulus. Although it is principally designed to save device battery under the maintenance of the patient׳s safety, we experienced a rare case with serious pacing failure due to a weakness of this algorithm. This pacing failure might be explained by a large variation in the ventricular pacing threshold depending on the atrioventricular interval and daily variation of pacing threshold and concomitant steroid use in this patient.
Related Concept Videos
Disturbances in Heart Rhythm
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
Time-Domain Interpretation of PD Control
Consider the example of control of motor torque. Initially, a positive...
Dysrhythmias III: Characteristics of Dysrhythmias
Errors occurring during blood pressure monitoring
Several factors...
Mechanism of Cardiac Arrhythmias
Dysrhythmias IV: Characteristics of Bradyarrhythmias

