Interatrial block can occur in the absence of left atrial enlargement: New experimental model.

Pacing and Clinical Electrophysiology : PACE
Jose M GuerraDamián Sánchez-Quintana

Abstract

We present the surface electrocardiogram of an open-chest anesthetized healthy adult swine after direct application of ice at the transversus sinus of the pericardium where the Bachmann's region is located. Gradual and transient interatrial block (IAB) in the absence of structural atrial disease is described. This new experimental model demonstrated that IAB is an independent entity from left atrial enlargement.

References

Nov 1, 1971·Circulation Research·A L WaldoB F Hoffman
Aug 28, 2012·Journal of Electrocardiology·Antonio Bayés de LunaDavid Spodick
Jan 10, 2018·Circulation·Adrian BaranchukAntoni Bayés de Luna

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