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Review

A comparison of alternative access routes for transcatheter aortic valve implantation

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Pages 749-756 | Received 14 Jun 2018, Accepted 12 Sep 2018, Published online: 28 Sep 2018
 

ABSTRACT

Introduction: Alternative transcatheter aortic valve implantation (TAVI) approaches offer the possibility of valve replacement in patients ineligible to the transfemoral route. Authors provide an updated review of the existing alternative approaches.

Areas covered: A systematic review of alternative approaches for TAVI was undertaken. The feasibility, safety, efficacy, and technical requirements of the transapical, transaortic, transcarotid, transsubclavian, and transcaval approaches have been compared. A multislice computed tomography is often necessary for pre-operative planning. Although the first developed, the transapical pathway tends to be abandoned because of its high morbidity. Transaortic approach requires a mini-sternotomy or thoracotomy and general anesthesia limiting its’ acceptance. Transcarotid approach requires a mini-invasive surgical cutdown but is feasible under conscious sedation. Registry data provided reassurance regarding the stroke risk with the transcarotid approach. Transsubclavian pathway is recent and feasible percutaneously although necessitates additional complex maneuvers to avoid serious bleeding complications, which extends its’ learning curve. Transcaval approach is still experimental but may benefit from technological advances.

Expert commentary: The choice of the alternative approach dependents on patient anatomy and comorbidities, and local operator expertise and skills. Transaortic, transcarotid and transsubclavian are nowadays used the most. However, comparative data to favor one approach over another is lacking and further research is warranted.

Declaration of interest

T Modine is a proctor and consultant for Medtronic and Microport. The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.

Reviewer Disclosures

Peer reviewers on this manuscript have no relevant financial relationships or otherwise to disclose.

Additional information

Funding

This paper was not funded.

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