Key result
St. Jude mechanical valves show less early postoperative flow obstruction than size-matched Perimount bioprostheses.
Why the study?
There was a need to describe Doppler-echocardiography normal values in the early postoperative phase for different prosthetic aortic valves to aid interpretation at follow-up.
Does the St. Jude Medical mechanical valve improve early postoperative hemodynamic performance compared to the Carpentier-Edwards Perimount bioprosthesis in patients with aortic stenosis?
Population
597 consecutive patients with prosthetic aortic valves implanted for aortic stenosis
Comparison
Carpentier-Edwards Perimount bioprosthesis vs St. Jude Medical and Medical Regent mechanical valves
Design
Single-center observational study with evaluation by a single experienced echo-laboratory
Follow-up
4-7 days after surgery
Authors
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Supports routine baseline Doppler evaluation after aortic valve replacement; leaves open long-term clinical impact in observational data.
Observational (n=597)
No
Does the St. Jude Medical mechanical valve improve early postoperative hemodynamic performance compared to the Carpentier-Edwards Perimount bioprosthesis in patients with aortic stenosis?
Early postoperative Doppler-echocardiography demonstrates that St. Jude Medical mechanical valves are less flow obstructive than Carpentier-Edwards Perimount bioprostheses, highlighting the need for routine baseline evaluations.
Minardi et al. (2010) conducted an observational in aortic stenosis (n=597). St. Jude Medical (SJM) mechanical valves vs. Carpentier-Edwards Perimount (CEP) bioprostheses was evaluated on Hemodynamic performance (flow-dependent and flow-independent Doppler-echocardiography parameters). St. Jude mechanical valves were less flow obstructive than Carpentier-Edwards Perimount bioprostheses when compared size-by-size in the early postoperative phase.
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