Opening/closing pattern of Trifecta and Freestyle valves versus native aortic valve: Are stentless valves more physiologic than a stented valve?

Tasca, Giordano; Vismara, Riccardo; Trinca, Francesco; Riva, Beatrice; Gamba, Amando; Lobiati, Elisabetta

doi:10.1111/jocs.13231

Cited by 7 publications

(5 citation statements)

References 22 publications

(33 reference statements)

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“…Firstly, our previous studies showed that, in term of fluid dynamic, both at rest and under stress, and the leaflets kinematics the two valves were equal [12,38,39]. Secondly, the distribution of the stentless valves was 59% and 39% (p = 0.340) for "inappropriate" and "appropriate" groups respectively.…”

Section: Mass Regression Phenomenonmentioning

confidence: 94%

Mass Regression after Aortic Valve Replacement in Aortic Stenosis: A Comparison between "Appropriate" and "Inappropriate" Left Ventricular Hypertrophy

Tasca¹,

Trinca²,

Riva³

et al. 2018

Int J Clin Cardiol

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Section: Mass Regression Phenomenonmentioning

confidence: 94%

Mass Regression after Aortic Valve Replacement in Aortic Stenosis: A Comparison between "Appropriate" and "Inappropriate" Left Ventricular Hypertrophy

Tasca¹,

Trinca²,

Riva³

et al. 2018

Int J Clin Cardiol

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Section: Valve Replacement and Valve Reconstruction In Patients With mentioning

confidence: 99%

“…There is no uniform consensus in labelling of valve prostheses' size, in vivo and in vitro testing and reporting of the haemodynamic performance and thrombogenicity that makes the comparison of the various valve models difficult [70]. The opening and closing mechanism of both mechanical and stented biological valves is different [71] from the physiological process based on currents returning along the wall of aortic sinuses, described by Leonardo da Vinci in 1513 [72]. A pulmonary autograft (Ross-procedure) contains native leaflets along with their sinuses and it offers superb haemodynamics, proven growth potential and no thrombogenicity.…”

Section: Valve Replacement and Valve Reconstruction In Patients With mentioning

confidence: 99%

Biofabrication in Congenital Cardiac Surgery: A Plea from the Operating Theatre, Promise from Science

Király

Vijayavenkataraman

2021

Micromachines

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Despite significant advances in numerous fields of biofabrication, clinical application of biomaterials combined with bioactive molecules and/or cells largely remains a promise in an individualized patient settings. Three-dimensional (3D) printing and bioprinting evolved as promising techniques used for tissue-engineering, so that several kinds of tissue can now be printed in layers or as defined structures for replacement and/or reconstruction in regenerative medicine and surgery. Besides technological, practical, ethical and legal challenges to solve, there is also a gap between the research labs and the patients’ bedside. Congenital and pediatric cardiac surgery mostly deal with reconstructive patient-scenarios when defects are closed, various segments of the heart are connected, valves are implanted. Currently available biomaterials lack the potential of growth and conduits, valves derange over time surrendering patients to reoperations. Availability of viable, growing biomaterials could cancel reoperations that could entail significant public health benefit and improved quality-of-life. Congenital cardiac surgery is uniquely suited for closing the gap in translational research, rapid application of new techniques, and collaboration between interdisciplinary teams. This article provides a succinct review of the state-of-the art clinical practice and biofabrication strategies used in congenital and pediatric cardiac surgery, and highlights the need and avenues for translational research and collaboration.

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“…In vitro comparison of everting vs. non-everting suture techniques for the implantation of a supra-annular biological heart valve and potentially create turbulent flow patterns (4). Whereas stentless prostheses provide optimal orifice areas due to the lack of surrounding material and are supposed to maintain physiologic aortic root dynamics (5). However, the implantation of this valve type requires an experienced surgeon.…”

Section: Original Articlementioning

confidence: 99%

In vitro comparison of everting vs. non-everting suture techniques for the implantation of a supra-annular biological heart valve

et al. 2020

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Background: The aim of this study was to evaluate the hemodynamic effect of different suturing techniques for aortic valve replacement (AVR) in vitro. Whether or not the applied suturing technique impacts the outflow tract diameter by narrowing the annulus diameter was examined. Methods:The commonly applied non-everting pledget forced suture technique (NE, n=13) was compared with an everting pledget forced suture (ET, n=13) for AVR using the 25 mm St. Jude Trifecta aortic valve. Hemodynamic parameters were obtained in a pulsatile flow simulator. A high speed camera captured the visual aspects of the suturing technique. Results: Despite some kind of left ventricular outflow narrowing due to protruding pledgets using the NE suture technique, mean pressure gradients of both techniques were nearly similar (NE 5.88±2.7 mmHg, ET 5.23±1.31 mmHg, P=0.44). Closing volume (NE 3.16±0.48 mL; ET 3.51±0.68 mL; P=0.14) and the leakage volume (NE: 8.09±2.53 mL; ET: 8.35±3.65 mL; P=0.83) also showed no differences. Conclusions: AVR using either suturing techniques leads to a similar hemodynamic performance in vitro.The impact of the suturing technique may be higher in a smaller annulus. Therefore, further studies using smaller prostheses are necessary.

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Opening/closing pattern of Trifecta and Freestyle valves versus native aortic valve: Are stentless valves more physiologic than a stented valve?

Abstract: The Freestyle stentless valve was not superior to the Trifecta valve in terms of kinematics and functions more like a stented bioprosthesis.

Cited by 7 publications

References 22 publications

Mass Regression after Aortic Valve Replacement in Aortic Stenosis: A Comparison between "Appropriate" and "Inappropriate" Left Ventricular Hypertrophy

Mass Regression after Aortic Valve Replacement in Aortic Stenosis: A Comparison between "Appropriate" and "Inappropriate" Left Ventricular Hypertrophy

Biofabrication in Congenital Cardiac Surgery: A Plea from the Operating Theatre, Promise from Science

In vitro comparison of everting vs. non-everting suture techniques for the implantation of a supra-annular biological heart valve

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