PMID: 9535485Apr 16, 1998Paper

A canine model of atrial flutter following the intra-atrial lateral tunnel Fontan operation

Journal of Electrocardiology
B I BrombergC B Huddleston

Abstract

Atrial flutter (AFL) is a common problem in children who have undergone a Fontan operation for single ventricle physiology. Although this has been attributed to the atrial stretch inherent in the earlier forms of this operation, AFL has persisted in spite of a modification that minimizes atrial distension. Therefore, it was hypothesized that AFL following the modified Fontan procedure may result from anatomic barriers related to suture lines rather than from atrial stretch or hypertension. In a series of experiments performed in dogs under general anesthesia, the modified Fontan repair was simulated by placing only the suture line of the intra-atrial repair. No baffle was placed, thus avoiding any hemodynamic alterations. After closure of the atriotomy, 253 point unipolar atrial endocardial form-fitting electrodes were inserted through the mitral and tricuspid valves via bilateral ventriculotomies. Induction of AFL was attempted with atrial burst pacing and programmed extrastimulation, and activation sequence maps of subsequent reentry were generated from the endocardial electrodes. Atrial flutter was induced in all of 17 dogs, with a median cycle length of 177 +/- 31 ms. Activation sequence maps demonstrated conduction block a...Continue Reading

References

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Citations

Feb 8, 2008·Journal of Interventional Cardiac Electrophysiology : an International Journal of Arrhythmias and Pacing·Sanjiv K Gandhi
Dec 3, 2008·Journal of the American Veterinary Medical Association·Maggie C MachenRobert Prosek
Dec 8, 2009·The American Journal of Cardiology·Cordula M WolfEdward P Walsh
Nov 1, 2005·Journal of Veterinary Cardiology : the Official Journal of the European Society of Veterinary Cardiology·Nuala Summerfield, Amara Estrada
Aug 28, 2004·Pediatric Clinics of North America·Robert D B JaquissS Bert Litwin
Apr 8, 2017·The Annals of Thoracic Surgery·Hong-Gook LimYong Jin Kim

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