SCCT expert consensus document on computed tomography imaging before transcatheter aortic valve implantation (TAVI)/transcatheter aortic valve replacement (TAVR)

Achenbach, Stephan; Delgado, Victoria; Hausleiter, Jörg; Schoenhagen, Paul; Min, James K.; Leipsic, Jonathon

doi:10.1016/j.jcct.2012.11.002

Cited by 570 publications

(401 citation statements)

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“…In addition, an average diameter can be calculated from the separately measured short and long diameters. Since the aortic annulus has the largest cross-sectional area in systole (30 % RR interval), this cardiac phase should be used for measuring the area-based effective diameter [14,23]. An effective diameter derived from the perimeter is presumably less susceptible to the change in the crosssectional area during the cardiac cycle [32] ( • " Fig.…”

Section: Aortic Root Measuring the Aortic Annulusmentioning

confidence: 99%

“…However, the risk resulting from these three anatomical parameters has not yet been conclusively studied. In general, it is assumed that the risk for a coronary obstruction when using the Medtronic CoreValve TM prosthesis is low due to the tapered shape which takes up less space on the level of the coronary sinus, while a minimal ostial distance of 10 -14 mm is recommended for the cylindrical Edwards SAPIEN TM prosthesis [14,33]. While it is difficult and often unreliable to measure ostial distances using 2 D TEE, CT is highly suitable for this purpose due to the ability to use multiplanar reconstructions from 3 D data.…”

Section: Aortic Root Measuring the Aortic Annulusmentioning

confidence: 99%

“…CT is routinely performed in many large centers to evaluate patients prior to TAVI [12,13]. A further indication of the increasing importance of CT is a recently published consensus document by the Society of Cardiovascular Computed Tomography (SCCT; [14] Fig. 1).…”

mentioning

confidence: 99%

“…The prosthesis is available is sizes 23 mm, 26 mm, 29 mm, and 31 mm and is typically implanted transfemorally or alternatively via the subclavian artery in exceptional cases. This requires an 18F delivery system [14,17]. Depending on the version, the Edwards SAPIEN TM prosthesis is comprised of a cylindrical stainless steel or cobalt-chromium frame which supports a tricuspid valve made of bovine pericardial tissue.…”

mentioning

confidence: 99%

“…16F or 18F delivery systems are used for the transfemoral implantation route and 24F or 26F systems for the transapical implantation route. The version based on a cobalt-chromium frame can be introduced with a smaller 18F delivery system [14,18]. In addition to the transfemoral and transapical implantation routes and implantation via the subclavian artery when using small delivery systems, a transaortic implantation route via the ascending aorta was also described [19].…”

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confidence: 99%

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Role of Preprocedural Computed Tomography in Transcatheter Aortic Valve Implantation

Lehmkuhl

Foldyna

Haensig

et al. 2013

Fortschr Röntgenstr

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Transcatheter aortic valve implantation (TAVI) is currently considered an acceptable alternative for the treatment of patients with severe aortic stenosis and a high perioperative risk or a contraindication for open surgery. The benefit of TAVI significantly outweighs the risk of the procedure in patients requiring treatment that are not suitable for open surgery, and leads to a lower mortality in the one-year follow-up.?The absence of a direct view of the aortic root and valve remains a challenge for the transcatheter approach. While direct inspection of the aortic valve during open surgery allows an adequate prosthesis choice, it is crucial for TAVI to know the individual anatomical details prior to the procedure in order to assure adequate planning of the procedure and proper prosthesis choice and patient selection. Among the imaging modalities available for the evaluation of patients prior to TAVI, computed tomography (CT) plays a central role in patient selection. CT reliably visualizes the dimensions of the aortic root and allows a proper choice of the prosthesis size. The morphology of the access path and relevant comorbidities can be assessed. The present review summarizes the current state of knowledge regarding the value of CT in the evaluation of patients prior to TAVI. Key Points: Citation Format:

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Section: Aortic Root Measuring the Aortic Annulusmentioning

confidence: 99%

Section: Aortic Root Measuring the Aortic Annulusmentioning

confidence: 99%

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confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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