Key result
Atrio-His bundle tracts are very rare, identified in only 2 of 687 histologically studied hearts, and may cause rapid ventricular response to supraventricular arrhythmias.
Observational (n=687)
Atrio-His bundle tracts are extremely rare anatomical variants that bypass the AV node and may cause rapid ventricular response during supraventricular arrhythmias.
Answers are grounded in this paper and cite their sources.
Clinicians should consider atrio-His tracts in unexplained rapid SVT responses; histological rarity leaves open in vivo prevalence and management implications.
The atrio-His bundle tracts are very rare; only two have been found in 687 hearts studied histologically. These tracts have a similar appearance to those of the atrioventricular bundle and form a complete bypass of the atrioventricular node. In their presence the electrocardiogram may show a short or normal PR interval. They may be responsible for some cases of very rapid ventricular response to supraventricular arrhythmias.
No takes yet. Share an insight, caveat, or question.
C Brechenmacher (1975) conducted an observational in Atrio-His bundle tracts (n=687). Atrio-His bundle tracts are very rare, identified in only 2 of 687 histologically studied hearts, and may cause rapid ventricular response to supraventricular arrhythmias.
Synapse has enriched 10 related papers. Consider them for comparative context: