Related Experiment Videos
[Prevention of reciprocal tachycardia by programmed electrostimulation]
Zeitschrift Fur Kardiologie
|July 1, 1985
Summary
Preventing reciprocating atrioventricular tachycardia is feasible using a precisely timed atrial extrastimulus. A second extrastimulus, delivered within a specific window after the initiating beat, successfully prevented tachycardia in all patients studied.
Area of Science:
- Electrophysiology
- Cardiac Arrhythmia Research
Context:
- Accessory atrioventricular pathways can lead to reciprocating atrioventricular tachycardia.
- Programmed electrical stimulation is a key diagnostic tool in arrhythmia management.
Purpose:
- To evaluate the efficacy of a single atrial extrastimulus for preventing tachycardia initiation.
- To define the timing window for successful tachycardia prevention.
Summary:
- Reciprocating atrioventricular tachycardia was initiated in 10 patients using programmed electrical stimulation.
- A second atrial extrastimulus, delivered within a defined "preventive zone" (starting 10 ms post-refractory period), consistently prevented tachycardia.
- The average preventive zone width was 50 ms, independent of tachycardia cycle length.
Impact:
- Demonstrates a potential non-pharmacological strategy for preventing atrioventricular tachycardia.
- Highlights the importance of precise extrastimulus timing for arrhythmia control.