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Ann Thorac Surg 2003;75:S6-S12
© 2003 The Society of Thoracic Surgeons

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Supplement

Ventricular reconstruction for ischemic cardiomyopathy

^a Division of Cardiovascular Surgery, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada
^b Division of Radiology, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada

^* Address reprint requests to Dr Mickleborough, Toronto General Hospital, 200 Elizabeth St, Toronto, Ontario, Canada M5G 2C4
e-mail: lynda.mickleborough{at}uhn.on.ca

Presented at the Heart Failure & Circulatory Support Summit, Cleveland, OH, Aug 22–25, 2002.

Abstract

Left ventricular surgical reconstruction has been advocated for patients with coronary artery disease, prior myocardial infarction, and poor left ventricular function. The objective of the approach is to resect or exclude all akinetic or dyskinetic nonfunctioning portions of the ventricular cavity and to restore the left ventricle size and shape toward normal as much as possible. We review the pathophysiology of ischemic cardiomyopathy and suggest guidelines for preoperative assessment and patient selection for ventricular reconstruction. Because of the prevalence and prognostic significance of ventricular arrhythmias in this patient population we include in our operative approach a visually directed ablation procedure in those with significant septal scarring. We describe our operative technique and review results achieved with this approach. The procedure results in a significant decrease in ventricular volume, increase in ejection fraction and improvement in apical geometry. We conclude that in selected patients with ischemic cardiomyopathy, left ventricular reconstruction can be accomplished with low operative mortality and results in significant improvement in left ventricular function. During follow up symptom class is decreased in most patients and overall survival at 5 years is 84% and freedom from sudden death is 96%. Ventricular reconstruction should be considered in all patients with coronary artery disease and akinetic or dyskinetic scar.

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