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The Journal of Thoracic and Cardiovascular Surgery, Vol 94, 632-634, Copyright © 1987 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Accuracy of sizers for aortic valve prostheses

LI Bonchek, MW Burlingame and BE Vazales
Division of Cardiothoracic Surgery, Lancaster General Hospital, Pa.

Accurate sizing of the aortic anulus is a prerequisite of prosthetic valve implantation, because it is usually desirable to insert the largest possible prosthesis. Although it is generally assumed that commercial valve sizers are accurately labeled, our measurements reveal that the sizers for the St. Jude Medical, Bjork-Shiley, and Ionescu- Shiley prostheses are larger than their nominal sizes. These findings are relevant to the selection of prosthetic valves.

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