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Assessment of normal and abnormal prosthetic mitral valves by Doppler echocardiography

Doppler in prosthetic mitral valves
  • Gilbert Habib
  • Michel Benichou
  • Jean-Louis Bonnet
  • Philippe Jau
  • Jacques Bille
  • Pierre Djiane
  • Roger Luccioni
Article

Abstract

Pulsed, continuous-wave, and color Doppler were performed in 165 normal mitral prostheses and 58 patients with prosthetic dysfunction (46 regurgitant and 12 obstructive valves) proved by catheterization and/or surgery. Mean mitral gradient (MG) and pressure half-time (PHT) were determined in all cases.

Among normal prostheses, a wide range of both MG and PHT was observed in each type of valve and a considerable overlap between valves of different size. St-Jude's valve had the most optimal hemodynamics. Mild mitral insufficiency was detected in 14% of tissue and 24% of mechanical mitral valves.

Repeat studies were performed in 30 patients over a 2.4 years period. Nine patients developed Doppler evidence of new prosthetic dysfunction, while Doppler parameters remained unchanged in 21 patients during the follow-up period.

Among malfunctioning valves, Doppler correctly identified all cases of prosthetic obstruction (n=12), and 42 of 46 regurgitant valves.

We conclude that Doppler echocardiography is a very useful technique in both non-invasive assessment and follow-up of normal prosthetic valves in the mitral position and in detecting prosthetic dysfunction, especially when prosthetic obstruction is present.

Key words

doppler echocardiography prosthetic mitral valves malfunctioning mitral prostheses follow-up of mitral prostheses 

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Copyright information

© Kluwer Academic Publishers 1990

Authors and Affiliations

  • Gilbert Habib
    • 1
  • Michel Benichou
    • 1
  • Jean-Louis Bonnet
    • 1
  • Philippe Jau
    • 1
  • Jacques Bille
    • 1
  • Pierre Djiane
    • 1
  • Roger Luccioni
    • 1
  1. 1.Department of CardiologyLA TIMONE HospitalMarseilleFrance

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