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High-Risk TAV-in-TAV: Balloon-Expandable TAVR in a Degenerated Mechanically Expanded Valve.

Authors: Lida, Koskina; Andrew, Ndakotsu; Antony, Kaliyadan; John, Wang; Shaikh B, Iqbal;

High-Risk TAV-in-TAV: Balloon-Expandable TAVR in a Degenerated Mechanically Expanded Valve.

Abstract

The objective of this study is to describe a high-risk transcatheter aortic valve-in-valve in a Lotus valve requiring coronary artery protection.Thorough preoperative assessment for valve sizing and coronary obstruction risk assessment are performed. Access is obtained for a pigtail catheter, a guiding catheter for percutaneous coronary intervention, and the transcatheter aortic valve replacement delivery system. Coronary access is secured with a coronary wire and a guide extension catheter before valve deployment. Proper alignment of the new valve is ensured. A snorkel stent is deployed and maximal expansion is ensured.Coronary artery anatomy, which is at high risk for obstruction, can lead to coronary ischemia or sequestration after valve deployment. Improper alignment of the new valve can lead to poor apposition and paravalvular leak. Injury to the aorta during valve deployment or when postdilation is required.Successful transcatheter aortic valve-in-valve in a Lotus valve is feasible with proper preoperative planning, individualized device selection, and coronary protection when indicated.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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