Normal Hemodynamics of the Medtronic-Hall Prosthetic Valve in Mitral Position Compared with Other Mitral Valve Prostheses as Assessed by Doppler Echocardiography

1992 ◽  
Vol 6 (6) ◽  
pp. 363-366 ◽  
Author(s):  
Martin Hoeher ◽  
Thomas Eggeling ◽  
Matthias Kochs ◽  
Vinzenz Hombach ◽  
Frede G. Gabrielsen ◽  
...  
Keyword(s):  
Mitral Valve ◽  
Doppler Echocardiography ◽  
Prosthetic Valve ◽  
Mitral Position ◽  
Valve Prostheses

scholarly journals Percutaneous Management of Prosthetic Valve Dysfunction in Mitral Position: Transapical Mitral Valve-In-Valve Implantation

2019 ◽  
Vol 87 (5) ◽  
pp. 380-382
Author(s):  
Juan R. Alderete ◽  
Alberto C. Anaya Revolledo ◽  
Verónica I. Volberg ◽  
Miguel Rubio ◽  
Gustavo E. Barrera ◽  
...  
Keyword(s):  
Mitral Valve ◽  
Prosthetic Valve ◽  
Valve Dysfunction ◽  
Prosthetic Valve Dysfunction ◽  
Mitral Position ◽  
Valve In Valve ◽  
Valve Implantation

Detection of Björk-Shiley Mitral Valve Dysfunction via Doppler Echocardiography

1994 ◽  
Vol 2 (2) ◽  
pp. 83-86
Author(s):  
Masaharu Shigenobu ◽  
Shunji Sano
Keyword(s):  
High Pressure ◽  
Mitral Valve ◽  
Pressure Gradient ◽  
Doppler Echocardiography ◽  
Prosthetic Valve ◽  
Left Ventricular ◽  
Volume Index ◽  
Pressure Gradients ◽  
Valve Dysfunction ◽  
Exercise Response

Fifty-eight patients with a Björk-Shiley (B-S) mitral valve were examined to study applicability of Doppler echocardiography in diagnosing and predicting the severity of prosthetic valve dysfunction. The effect of valve replacement on the hemodynamic performance at rest and during bicycle exercise was determined from serial echocardiographic data. The high pressure gradient group in which peak pressure gradients were assumed to be more than 15mmHg at rest, showed negative values of percent change in both stroke volume index (%ΔSVI) and left ventricular end-diastolic volume index (%ΔEDVI). All patients with high pressure gradients had poor exercise response of the left ventricle, whereas most patients with low pressure gradients showed good exercise response. The high pressure gradient group had significantly smaller mitral valve area than did the low pressure group. This suggests that impairment of inflow caused by the artificial valve, namely, prosthetic valve stenosis, is possibly a significant factor causing left ventricular dysfunction—notably a decrease in stroke volume during exercise. Reoperation was performed with good results in 5 of 58 patients because of high pressure gradients across the mitral valve prosthesis caused by tissue overgrowth. We conclude the high pressure gradient group is considered to be a reserved cohort of reoperation and periodical measurement of the pressure gradient via Doppler echocardiography can predict prosthetic valve dysfunction before it deteriorates significantly.

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