Intraoperative recording of specialized atrioventricular conduction tissue electrograms in 47 patients

Circulation
M DickA R Castaneda

Abstract

Intraoperative mapping of the specialized atrioventricular conduction system was performed in 47 patients during cardiac surgery. Specialized conduction tissue electrograms were identified in 37, and atrioventricular conduction preserved in 92%. Specialized conduction tissue was identified in 27 patients with atrioventricular canal defect: complete heart block was avoided in 25. Conduction tissue was located in six of 12 patients with complex transpositions; atrioventricular conduction was preserved in all six. Other lesions in which the technique was useful were Ebstein's anomaly and single atrium. Limitations to the technique are 1) deep hypothermia and circulatory arrest; 2) interruption in atrioventricular conduction during mapping; 3) inadequate exposure and access to probable sites of conduction tissue; 4) variation of size and spatial relations of individual malformations; and 5) limited time for identification of unusually located conduction tissue. Indications for use of this technique include patients with both forms of atrioventricular canal, complex transpositions, atrioventricular discordance, single ventricle and single atrium.

References

Jan 1, 1977·The Annals of Thoracic Surgery·G S Wolff, R D Alley
Mar 1, 1977·The Annals of Thoracic Surgery·S StewartL Siegel
Nov 1, 1974·Circulation·R H AndersonJ L Wilkinson
Dec 1, 1972·The American Journal of Cardiology·A J MossG C Emmanouilides

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Citations

Jul 1, 1982·Archives of Disease in Childhood·D E WardE A Shinebourne
Jan 26, 2016·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Shailendra UpadhyayEdward P Walsh
Apr 1, 1982·The American Journal of Cardiology·C J ByrumA Rosenthal
Jan 1, 1982·The American Journal of Cardiology·J J GallagherW M Smith
Jan 21, 2019·Journal of Cardiovascular Electrophysiology·Gong-Bu ZhouFei-Fan Ouyang
Jan 1, 1979·Langenbecks Archiv für Chirurgie·J OstermeyerW Bircks

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