Comparative assessment of immediate outcomes of aortic valve replacement with CE Perimount, Aspire, Hancock-2, UniLine

Aim.To compare hemodynamics between four different aortic tissue valves implanted in the elder patients. The stented bioprostheses sizes were 21, 23, and 25. All bioprostheses were produced by different manufacturers.

Methods.135 patients who underwent aortic valve replacement at the Belgorod Regional Clinical Hospital in the period from January 01, 2007 to June 01, 2018 were included in the retrospective non-randomized clinical study. Implantation of 21 mm tissue heart valves was performed in 50 patients, 23 mm - in 66 patients, and 25 mm - in 29 patients. Stented bioprostheses Carpentier-Edwards PERIMOUNT (Edwards, USA), Aspire (Vascutek, USA), Hancock-2 (Medtroniс, USA), and UniLine (NeoCor, Russia) were used in the study.

Results.Valve function was estimated by transthoracic echocardiography at days 10-14 postoperatively. Peak gradient, left ventricular stroke volume, the ratio between stroke volume and maximum gradient (SV/∆р mах), the ratio between SV/∆р mах and BSA were measured in all patients. The stented UniLine tissue heart valve (NeoCor) demonstrated superior hydrodynamic parameters, whereas stented Hancock-2 tissue heart valve had inferior ones.

Conclusion.Patients who underwent aortic valve replacement with UniLine (NeoCor) reported low peak gradient, improved stroke volume and better peripheral perfusion in the immediate postoperative period. Obtained data suggest that UniLine is more durable and results in better systolic and diastolic left ventricle function, leading to left ventricle hypertrophy regression.

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