A novel contribution towards coherent and reproducible intravalvular measurement of the aortic annulus by multidetector computed tomography ahead of transcatheter aortic valve implantation

Dementhon, Julie; Rioufol, Gilles; Obadia, Jean-François; Vergnat, Mathieu; Green, Lisa; Croisille, Pierre; Boussel, Loîc; Péron, Julien; Revel, D.; Finet, Gérard

doi:10.1016/j.acvd.2014.11.007

Cited by 3 publications

(2 citation statements)

References 42 publications

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“…Indeed, highly contributive studies suggested that classifying AS severity by AVA leads to a higher proportion of severe AS 5 . This is due to underestimation of left ventricle outflow tract (LVOT), due to its ellipticity 6,7 , which is not taken into account in the ultrasound estimation of AVA 8 .…”

Section: Introductionmentioning

confidence: 99%

Impact of Arterial Blood Pressure on Ultrasound Hemodynamic Assessment of Aortic Valve Stenosis Severity

Hayek

Dérimay

Green

et al. 2020

Journal of the American Society of Echocardiography

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Section: Introductionmentioning

confidence: 99%

Impact of Arterial Blood Pressure on Ultrasound Hemodynamic Assessment of Aortic Valve Stenosis Severity

Hayek

Dérimay

Green

et al. 2020

Journal of the American Society of Echocardiography

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“…However, this method is not perfect, and there is still some variability in sizing especially the virtual basal ring leading to an undersized prosthesis, which has been described in several reports. 10 Compared to TAVI, image-based sizing is even more inadequate in preoperative determination of SU valve sizes, since it analyzes an anatomical setting which will be modified after removal of the valvular leaflets.…”

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confidence: 99%

Proof of Concept of an Endoscopic Sutureless Valve Sizer

Vola

Maureira

Ruggieri

et al. 2016

Innovations�(Phila)

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Objective In this paper, we present an endoscopic expandable sizer conceived to allow thoracoscopic aortic valve replacement with a sutureless prosthesis using a dynamic sizing of the aortic annulus. Methods Ten aortic torsos were prepared using a five-trocar thoracoscopic setting. Once the aortotomy was performed and the aortic valve leaflets removed, the technical feasibility of the endoscopic sizing (introduction into the trocar, expansion into the aortic annulus, determination of the valve size, and retraction) with the device was assessed. In case of successful thoracoscopic sizing, endoscopic implantation of a sutureless valve (five LivaNova Perceval prosthesis and five Medtronic 3f Enable bioprosthesis) was performed. Before ascending aorta closure, we assessed the appropriate sealing of the bioprosthesis in the native annulus with camera visualization and a nerve hook inspection. Results All the 10 endoscopic sizings were technically feasible. The scheduled aortic sutureless valve implantations were successfully performed. In all cases, fitting and placement of the sutureless bio-prosthesis in the flaccid heart was satisfactory, with no paraprosthetic leakage detectable by the nerve hook. Conclusions The use of the endoscopic expandable sizer is technically possible. In this early-stage test in the flaccid heart, selection of the valve size was satisfactory during thoracoscopic sutureless aortic bioprosthesis implantation. Further laboratory evaluation with fluid dynamics (aortic root pressurization) will be performed before a clinical study is started.

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Proof of Concept of an Endoscopic Sutureless Valve Sizer

et al. 2016

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A novel contribution towards coherent and reproducible intravalvular measurement of the aortic annulus by multidetector computed tomography ahead of transcatheter aortic valve implantation

Abstract: Based on the present results, we recommend including a BCCC slice to complete aortic annulus sizing, in order to optimize implant calibration.

Cited by 3 publications

References 42 publications

Impact of Arterial Blood Pressure on Ultrasound Hemodynamic Assessment of Aortic Valve Stenosis Severity

Impact of Arterial Blood Pressure on Ultrasound Hemodynamic Assessment of Aortic Valve Stenosis Severity

Proof of Concept of an Endoscopic Sutureless Valve Sizer

Proof of Concept of an Endoscopic Sutureless Valve Sizer

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