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Novel and Innovative Hybrid Technique for Type A Aortic Dissection
Published on: March 28, 2025
Endovascular thoracic aortic aneurysm repair without angiography
Piergiorgio Tozzi1, Bettina Marty, Patrick Ruchat
1From the CardioVascular Surgery Department, Centre Hospitalier Universitaire Vaudois-CHUV, Lausanne, Switzerland.
Innovations (Philadelphia, Pa.)
|March 23, 2012
Summary
Intravascular ultrasound (IVUS) can replace angiography for thoracic endovascular aneurysm repair, offering detailed imaging for precise device deployment. This approach avoids contrast-related risks, enhancing patient safety during complex aortic procedures.
Area of Science:
- Cardiovascular Surgery
- Medical Imaging
- Endovascular Interventions
Background:
- Thoracic endovascular aneurysm repair (TEVAR) traditionally relies on angiography.
- Angiography involves contrast agents, posing risks like renal failure.
- Intravascular ultrasound (IVUS) offers high-definition imaging of vascular dimensions and branches.
Purpose of the Study:
- To evaluate IVUS as a primary imaging modality for TEVAR work-up.
- To assess the feasibility and safety of using IVUS instead of angiography during TEVAR.
- To determine if IVUS provides sufficient information for device selection and deployment.
Main Methods:
- Retrospective analysis of 89 patients undergoing TEVAR without intraprocedural angiography.
- Utilized IVUS (6F/12.5MHz or 10F/9MHz) in conjunction with fluoroscopy for guidance.
- IVUS was used for target site identification, landing zone measurement, device positioning, and repair assessment.
Main Results:
- Hospital mortality was 4.5%.
- Procedure time averaged 63 minutes; X-ray exposure was 12 minutes.
- Complications included one conversion to open surgery (1.1%), one paraplegia (1.1%), and 8.9% early endoleak requiring further intervention.
Conclusions:
- IVUS provides comprehensive data for TEVAR, including device selection and deployment.
- Periprocedural angiography can be eliminated, mitigating contrast-induced nephropathy.
- IVUS is a safe and effective alternative to angiography in TEVAR procedures.
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