Evaluation par doppler des protheses de saint jude aortiques [gradient de pression et surface fonctionnelle]

ABSTRACT

The authors present the hemo dynamic performance of 31 prothesis aortic of saint- JUde by echo- doppler examination realised 48 months after this prothesis implantation. It was 6 prothesis N° 19, 12 prothesis N° 21 6 prothesis N° 6 and 7 prothesis N°25. Independenly of the size of the aortic Saint- Jude the maximal quickness trans prothetic is 2.59 +/- 0.35 m/s the maximal gradient is 26.95 +/- 2.3 mm hg. The transprothetic functional surface is 1.3 +/- 0.21 cm[2] and the indicative of permeability is 0.386 +/- 0.09. it was not a significative difference between the prothesis of small diameter and big diameter for the maximal quickness and the maximal gradient, the mitral surface is 1.2 +/- 0.2 cm[2] for the Saint- Jude n° = 19 and 1.53 +/- 0.3 cm[2] for the Saint jude n°25