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Upper-extremity Approach for Secondary Access in Transfemoral Transcatheter Aortic Valve Implantation
Published on: August 8, 2025
Assessment, treatment, and prognostic implications of CAD in patients undergoing TAVI
Edward Danson1, Peter Hansen2, Sayan Sen3
1St George's University Hospitals NHS Foundation Trust, Blackshaw Road, Tooting, London SW17 0QT, UK.
Insights
Coronary artery disease (CAD) is common in patients undergoing transcatheter aortic valve implantation (TAVI). Current methods for assessing CAD and guiding revascularization are inadequate, necessitating new approaches for better patient outcomes.
Area of Science:
- Cardiology
- Interventional Cardiology
- Cardiac Surgery
Background:
- Coronary artery disease (CAD) frequently coexists with severe aortic stenosis in patients undergoing transcatheter aortic valve implantation (TAVI).
- The clinical significance and optimal management of CAD in this population remain controversial.
- Current guidelines do not recommend routine coronary revascularization in TAVI patients.
Purpose of the Study:
- To review current methods for assessing CAD in TAVI patients.
- To evaluate the safety and efficacy of percutaneous coronary intervention (PCI) in this cohort.
- To highlight the need for improved diagnostic strategies for CAD to guide revascularization decisions.
Main Methods:
- Literature review of studies assessing CAD in TAVI populations.
- Analysis of data on PCI safety and efficacy in TAVI patients.
- Discussion of the impact of aortic stenosis on functional CAD assessment.
Main Results:
- Existing methods for CAD assessment in TAVI patients are insufficient.
- The role of PCI in TAVI patients requires further clarification.
- Aortic stenosis may confound the functional assessment of CAD.
Conclusions:
- There is a critical need for a validated method to assess CAD as a cause of myocardial ischemia in severe aortic stenosis patients undergoing TAVI.
- Improved assessment strategies are essential to guide appropriate revascularization decisions.
- Better management of CAD in TAVI patients may improve clinical outcomes.
Abstract:
Coronary artery disease (CAD) is common in patients with severe aortic stenosis undergoing transcatheter aortic valve implantation (TAVI), but its clinical relevance is controversial. At present, the optimal means of defining CAD in patients undergoing TAVI with respect to its prognostic implications and the assessment of myocardial ischaemia is not known. For this reason, the best treatment options are a matter for debate, and current guidelines do not recommend revascularization. As the indications for TAVI expand, the lack of any rigorous means of guiding coronary revascularization might negatively affect the clinical outcomes of future patients. In this Review, we summarize the methods of assessing CAD in TAVI populations, and the data on the safety and efficacy of percutaneous coronary intervention in patients undergoing TAVI. We discuss the putative effects of aortic stenosis on the functional assessment of CAD using pressure or flow wires or by noninvasive stress testing. We propose that a new, well-validated method of assessing CAD as a cause of myocardial ischaemia--which distinguishes it from myocardial infarction, previous revascularization, or non-flow-limiting disease--in patients with severe aortic stenosis is needed to guide revascularization in the current era of TAVI.
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