Doppler echocardiography of normal Starr-Edwards mitral prostheses: A comprehensive function assessment including continuity equation and time-velocity integral ratio

Joseph F. Malouf, Manfredi Ballo, David O. Hodge, Regina M. Herges, Thomas A. Orszulak, Fletcher A. Miller

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The purpose of this study was to provide comprehensive Doppler echocardiographic assessment of the function of the normal Starr-Edwards mitral valve prosthesis using all the Doppler hemodynamic variables described to date, including the mitral valve prosthesis time-velocity integral (TVI)/left ventricular outflow tract TVI ratio and the prosthesis performance index. All patients had a peak early mitral diastolic velocity of no more than 2 m/s or a pressure half-time that was less than 130 milliseconds. All but one patient had either a peak early mitral diastolic velocity of no more than 2 m/s or a mitral valve prosthesis TVI/left ventricular outflow tract TVI ratio of less than 2.2, regardless of prosthesis size or left ventricular systolic function. There was a trend of decreasing prosthesis performance index with increasing prosthesis valve size that was not statistically significant, however.

Original languageEnglish (US)
Pages (from-to)1399-1403
Number of pages5
JournalJournal of the American Society of Echocardiography
Volume18
Issue number12
DOIs
StatePublished - Dec 1 2005

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

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