Key result
A patient with triple atrioventricular non-reentrant tachycardia demonstrated 3 distinct AV nodal pathways and multiple triple fire responses on surface ECG and intracardiac electrograms.
Case Report (n=1)
This case report describes a rare instance of triple atrioventricular non-reentrant tachycardia involving three distinct AV nodal pathways.
Alerts clinicians to rare triple AV nodal pathways in non-reentrant tachycardia; hypothesis-generating for electrophysiology research.
Although uncommonly encountered, dual atrioventricular nodal non-reentrant tachycardia (DAVNNRT) is a well described arrhythmia that can manifest in patients with dual atrioventricular nodal pathways physiology. This arrhythmia is characterized on ECG by a single P wave followed by two conducted QRS complexes, and on intracardiac EGMs by a single atrial electrogram followed by two separate His deflections and ventricular electrograms. Our case demonstrates a rare case of “triple atrioventricular non-reentrant tachycardia” in which a patient was found to have 3 distinct AV nodal pathways and multiple “triple fire responses”, both on surface ECG and intracardiac electrograms.
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Raphael et al. (2022) conducted a case report in Triple atrioventricular non-reentrant tachycardia (n=1). A patient with triple atrioventricular non-reentrant tachycardia demonstrated 3 distinct AV nodal pathways and multiple triple fire responses on surface ECG and intracardiac electrograms.
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