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Updated: Jun 9, 2025

Improved Registration of 3D CT Angiography with X-ray Fluoroscopy for Image Fusion During Transcatheter Aortic Valve Implantation
Published on: June 3, 2018
How to address the coronaries in TAVI candidates: can the need for revascularization be safely determined by CT
Katharina Theresa Julia Mascherbauer1, Gudrun Lamm2, Andreas Anselm Kammerlander1
1Department of Internal Medicine 2, Division of Cardiology, Medical University of Vienna, Vienna, Austria.
Insights
Routine assessment for coronary artery disease (CAD) before transcatheter aortic valve implantation (TAVI) is increasingly questioned. Current practices of invasive coronary angiography (CA) and percutaneous coronary intervention (PCI) may not benefit all TAVI patients.
Area of Science:
- Cardiology
- Interventional Cardiology
- Cardiovascular Imaging
Background:
- Coronary artery disease (CAD) is a common comorbidity in patients undergoing transcatheter aortic valve implantation (TAVI).
- The necessity and benefit of routine invasive coronary angiography (CA) and percutaneous coronary intervention (PCI) in TAVI candidates are under scrutiny.
- CA poses risks including kidney injury and bleeding, and may be unnecessary if computed tomography angiography (CTA) excludes significant proximal coronary stenoses.
Purpose of the Study:
- To evaluate the current practice and evolving evidence regarding routine CAD assessment and revascularization in TAVI patients.
- To discuss the potential for a more streamlined, individualized, and resource-sparing approach to TAVI treatment.
Main Methods:
- Review of current clinical practice and guideline recommendations for CAD assessment in TAVI candidates.
- Analysis of risks associated with invasive coronary angiography (CA) and percutaneous coronary intervention (PCI).
- Consideration of evidence from ongoing randomized trials challenging existing strategies.
Main Results:
- Despite risks and unclear benefits, CA and PCI for stable coronary lesions are common in TAVI patients.
- Computed tomography angiography (CTA) may obviate the need for CA in many cases.
- Ongoing trials are investigating the efficacy of current strategies, suggesting potential changes in practice.
Conclusions:
- The routine use of invasive coronary angiography (CA) and percutaneous coronary intervention (PCI) in transcatheter aortic valve implantation (TAVI) patients warrants re-evaluation.
- Future TAVI management may shift towards more individualized, risk-stratified, and resource-efficient strategies.
- Evidence from ongoing trials is expected to refine recommendations for CAD assessment and treatment in TAVI candidates.
Abstract:
Coronary artery disease (CAD) remains one of the most frequent comorbidities among transcatheter aortic valve implantation (TAVI) candidates. Whether routine assessment of CAD by invasive coronary angiography (CA) and eventual peri-procedural percutaneous coronary intervention (PCI) is generally beneficial in TAVI patients has recently been heavily questioned. CA carries significant risks, such as kidney injury, bleeding, and prolonged hospital stay, and may frequently be unnecessary if significant stenoses of the proximal coronary segments can be ruled out on computed tomography angiography. Moreover, the benefits of pre-emptive coronary revascularization at the time of TAVI are not well defined. Despite these facts and weak guideline recommendations, CA and eventual PCI of stable significant coronary lesions at the time of TAVI remain common practice. However, ongoing randomized trials currently challenge the efficacy of such strategies to enable a more streamlined, individualized, and resource-sparing treatment with TAVI.
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