Journal Article10.1111/J.1540-8175.2009.00940.X
Exercise echocardiography in cryopreserved aortic homografts: comparison of a prototype stentless, a stented bioprosthesis, and native aortic valves.
Adriana Cordovil,Orlando Campos Filho,José L. Andrade,Ana Clara Tude Rodrigues,Luis Antonio Gerola,Valdir Ambrósio Moisés,Enio Buffolo,Antonio Carlos de Camargo Carvalho +7 more
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TL;DR: Implanted aortic CH had better hemodynamic performance than SS and SD bioprosthesis and similar to native normal aortIC valves, both at rest and immediately after exercise.
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Abstract: Background: Aortic valve replacement with a cryopreserved aortic homograft (CH) is an attractive alternative to bioprosthesis implantation. The aim of the study was to compare the hemodynamic performance of CH implanted with aortic root inclusion compared to prototype stentless (SS) bioprosthesis, standard stented (SD) bioprosthesis, and a native aortic valve. Methods: Hemodynamics and Doppler echocardiographic measurements such as left ventricular ejection fraction, aortic valve orifice area index (AVOAI), mean and maximal transvalvular gradients, were obtained at rest and immediately after exercise in 28 patients after aortic valve replacement with CH (n = 10), SS (n = 9), or SD (n = 9), and in a control group (CG) of 15 normal volunteers. Results: Rest and peak exercise heart rate and workload achieved were not different among the groups. Baseline AVOAI was larger for CH and CG compared to SS and SD groups (P < 0.05). Maximal and mean transvalvular pressure gradients at rest were lower for CH compared to SS and SD groups (P < 0.05), but higher than CG (P < 0,05). Conclusion: Implanted aortic CH had better hemodynamic performance than SS and SD bioprosthesis and similar to native normal aortic valves, both at rest and immediately after exercise. (ECHOCARDIOGRAPHY, Volume 26, November 2009)
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Value of exercise Doppler echocardiography in patients with prosthetic or bioprosthetic cardiac valves
TL;DR: It is concluded that the response to exercise can be inferred from Doppler parameters at rest, particularly in patients with aortic valve prostheses, and the clinical implication of the high gradients found in some asymptomatic patients in the present study should be elucidated by follow-up studies.
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Changes in left ventricular mass and function after aortic valve replacement: a comparison between stentless and stented bioprosthetic valves.
TL;DR: It is suggested that the superior hemodynamic performance of stentless bioprostheses may have some benefits with regard to LV mass regression and function after aortic valve replacement.
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The Ross Procedure: Shorter Hospital Stay, Decreased Morbidity, and Cost Effective
James Jaggers,Harrison Jk,Thomas M. Bashore,Robert D. Davis,Donald D. Glower,Ross M. Ungerleider +5 more
TL;DR: The data from this review demonstrate that the Ross procedure can be done safely, with short hospital stays, decreased morbidity, and costs comparable with those of standard mechanical aortic valve replacement in patients with isolated aortsic valve disease.
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•Journal Article
Rest and exercise hemodynamics of an extended stentless aortic bioprosthesis.
TL;DR: Doppler echocardiography, showing low incidence of aortic regurgitation and early regression of left ventricular hypertrophy, demonstrate the beneficial hemodynamic performance of this valve.
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Role of the cryopreserved homograft in isolated elective aortic valve replacement
John G. Byrne,Alexandros N. Karavas,Tomislav Mihaljevic,James D. Rawn,Sary F. Aranki,Lawrence H. Cohn +5 more
TL;DR: In 100 consecutive patients who underwent isolated elective homograft AVR, hospital and 30-day mortality was zero, whereas 12- and 60-month survival was 100% and 98%, respectively, and this may be the AVR prosthesis of choice for the young (<40 years) to middle-aged patient who cannot commit to lifelong anticoagulation.
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