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Case Reports
. 2011:2011:475796.
doi: 10.5402/2011/475796. Epub 2011 Jun 1.

Isolated Atrial Lead Conduction Delay following Right Atrial Radiofrequency Maze Procedure

Mackram F Eleid  1 , Joseph A Dearani, Win-Kuang Shen
Affiliations
Case Reports

Isolated Atrial Lead Conduction Delay following Right Atrial Radiofrequency Maze Procedure

Mackram F Eleid et al. ISRN Cardiol. 2011.

Abstract

A 60-year-old man with a dual-chamber implantable cardioverter defibrillator and severe dyspnea on exertion due to apical hypertrophic cardiomyopathy underwent a septal myectomy and radiofrequency maze procedure. Following the procedure a persistent delay in atrial sensing was observed and was most likely a result of iatrogenic conduction delay from right atrial ablation lines. These observations suggest that atrial conduction properties can be altered during the surgical maze procedure and should be considered in the differential diagnosis of sensing or pacing malfunction.

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Figures

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Diagram of right atrial maze ablation lines.
See this image and copyright information in PMC

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