Does direct application of ice at Bachmann's region induce interatrial block in healthy swine?
Open-chest anesthetized healthy adult swine
Direct application of ice at the transversus sinus of the pericardium (Bachmann's region)
Development of interatrial block (IAB) on surface electrocardiogramsurrogate
This experimental swine model demonstrates that interatrial block can occur independently of left atrial enlargement.
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.
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María José Guerra Palmero
Gemma Vilahur
Antoni Bayés de Luna
Pacing and Clinical Electrophysiology
Universitat Autònoma de Barcelona
Hospital Clínic de Barcelona
Centro de Investigación Biomédica en Red
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Palmero et al. (Sat,) studied this question.
www.synapsesocial.com/papers/69d8bf9502f13db44fbed92d — DOI: https://doi.org/10.1111/pace.13895