Mechanical versus biological valve prostheses

A Retrospective Cohort Study in patients over 55: Mechanical versus Biological valve prostheses

Results Of the 138 patients, 59.8% (n = 61) of the patients with biological valves and 58.3% (n = 21) of the patients with mechanical survived between 5 to 10 years. The unpaired t-test and the chi-squared test performed showed that there was no statistically significant difference in the survival of patients who had biological valves and those who had mechanical valves. Discussion/Conclusion T...

Selection of aortic valve prostheses: contemporary reappraisal of mechanical versus biologic valve substitutes.

Clinical performance of biological and mechanical prostheses.

Prosthetic valve replacement remains the most viable alternative for the treatment of severely diseased heart valves. The cumulative experience of mechanical protheses and bioprostheses was evaluated for a 10-year performance comparison: Carpentier-Edwards standard porcine bioprosthesis (CE-S), 1,214 operations; Carpentier-Edwards supraannular porcine bioprosthesis (CE-SAV), 2,489; and mechanic...

Outcomes of patients subjected to aortic valve replacement surgery using mechanical or biological prostheses.

OBJECTIVE This paper evaluates outcomes in patients subjected to surgery for replacement of the aortic valve using biological or mechanical substitutes, where selection of the type of prosthesis is relevant. METHODS Three hundred and one patients, randomly selected, who had been subjected to aortic valve replacement surgery between 1990 and 2005, with a maximum follow-up period of 20 years. ...

On-X versus St Jude Medical Regent mechanical aortic valve prostheses: early haemodynamics

OBJECTIVE We aimed to compare the early haemodynamic data of the On-X and St Jude Medical (SJM) Regent bileaflet mechanical prostheses in the aortic position. METHODS A retrospective study was performed using data collected prospectively for a national database. Thirty-three patients who had aortic On-X valve (On-X group) and 33 matched patients who had aortic SJM Regent valve (SJM group) wer...