Accuracy of transesophageal echocardiography in preoperative determination of aortic anulus size during valve replacement

Theodore P. Abraham, Neal D. Kon, Abdel M. Nomeir, A. Robert Cordell, Dalane W. Kitzman

Research output: Contribution to journalArticlepeer-review

Abstract

This prospective, blinded study evaluated the accuracy of transesophageal (TEE) and transthoracic echocardiography in predicting the size of the surgical aortic valve anulus in 20 consecutive patients undergoing aortic valve replacement. TEE was highly accurate in predicting surgical aortic valve anulus size (r = 0.98; p < 0.00001). The standard error of the TEE estimate of the size of the obturator anulus was only 0.04 mm, and in all cases the TEE estimate was within 1 mm of the direct surgical measurement. Both biplane and multiplane TEE probes were equally accurate and this accuracy was maintained over a wide range of sizes of surgical aortic anulus. Transthoracic echocardiography appeared less accurate in predicting anulus size (r = 0.64; p < 0.08). Therefore TEE can be used routinely for selection and preparation of aortic allografts before sternotomy, potentially reducing cardiopulmonary by-pass pump time by 10 to 30 minutes and ensuring optimal size matching of the donor-recipient anulus.

Original languageEnglish (US)
Pages (from-to)149-154
Number of pages6
JournalJournal of the American Society of Echocardiography
Volume10
Issue number2
DOIs
StatePublished - Jan 1 1997

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

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