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Radiology, Vol 170, 447-452, Copyright © 1989 by Radiological Society of North America

ARTICLES

Complications of automatic implantable cardioverter defibrillators: radiographic, CT, and echocardiographic evaluation

LR Goodman, GH Almassi, PJ Troup, JW Gurney, J Veseth-Rogers, PD Chapman and JN Wetherbee
Department of Radiology, Medical College of Wisconsin, Milwaukee 53226.

Automatic implantable cardioverter defibrillators (AICDs) were studied in three groups: (a) Serial radiographs were reviewed in 51 clinic patients. Twenty of 96 (21%) AICD patches distorted with time. (b) Thirty-six postoperative computed tomographic (CT) scans of asymptomatic patients revealed that pericardial fluid collections were frequent during the month after surgery but rare beyond that. Echocardiography was insensitive for these collections. CT also demonstrated dense fibrosis around some distorted patches, months after surgery. (c) Five other patients with pericardial infection had distorted patches, and the four studied with CT had fluid beneath their patches. (d) A case of constrictive pericarditis had distorted patches but was not diagnosed with CT. The authors conclude that distorted patches may indicate postoperative complications and that CT is the imaging modality of choice.


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