Optimizing CLTI Outcomes: The Role of IVUS in Revascularization

Chronic limb-threatening ischemia (CLTI) remains a significant challenge for interventionalists worldwide. While endovascular techniques have evolved, the routine application of IVUS in CLTI revascularization is still limited. Specifically, experts highlight both the potential imaging benefits and the significant hurdles facing its routine implementation in clinical practice. Therefore, understanding these systemic barriers is crucial for improving patient outcomes and standardizing peripheral interventions.

Key Barriers to Adopting IVUS in CLTI Revascularization

The recent multidisciplinary survey of 105 specialists highlights three primary obstacles. First, nearly 70% of operators cited cost and lack of reimbursement as the most significant deterrent. Furthermore, concerns about increased procedural time influenced nearly half of the participants. Additionally, approximately 39% of experts noted the absence of high-quality randomized data as a major limitation. Consequently, many clinicians continue to rely on traditional angiography despite its known weaknesses in accurate vessel sizing and lesion characterization.

The Path Forward: Clinical Equipoise and Future Trials

Interestingly, the study reveals a strong clinical equipoise and a willingness among specialists to participate in further research. Specifically, 80% of operators agree that a multicenter randomized trial is essential to validate the long-term benefits of intravascular imaging. Moreover, over 77% of respondents expressed a readiness to randomize patients in such trials. Therefore, future initiatives are gaining momentum to provide the robust evidence required for standardized practice. By addressing these data gaps, the medical community can move toward more precise and effective limb salvage strategies.

FAQs

Why is IVUS preferred over angiography for vessel sizing in CLTI?

IVUS provides a 360-degree cross-sectional view of the vessel wall, allowing for more accurate diameter measurements than two-dimensional angiography. This precision is essential for selecting the correct balloon or stent size, which can significantly reduce the risk of restenosis or vessel injury.

What are the primary clinical benefits reported for IVUS-guided procedures?

Studies suggest that IVUS guidance leads to better stent optimization, improved vessel patency, and higher limb salvage rates. It also helps interventionalists identify dissections and residual stenoses that might be invisible on a standard angiogram, ensuring a more thorough revascularization.

Disclaimer: This content is for informational and educational purposes only. It does not constitute medical advice or establish a doctor-patient relationship. Refer to the latest local and national guidelines for clinical practice.

References

1. d’Entremont MA et al. Intravascular Ultrasound in Chronic Limb-Threatening Ischemia Endovascular Revascularization: A Multidisciplinary Survey of Clinical Practices and Operator Perceptions. Catheter Cardiovasc Interv. 2026 May 25. doi: 10.1002/ccd.70665. PMID: 42179149.


2. Soga Y et al. Clinical impact of intravascular ultrasound-guided balloon angioplasty in patients with chronic limb threatening ischemia for isolated infrapopliteal lesion. Catheter Cardiovasc Interv. 2021 Feb 15;97(3):E376-E384. doi: 10.1002/ccd.29347.


3. Secemsky EA et al. Intravascular ultrasound use in peripheral arterial and deep venous interventions: multidisciplinary expert opinion from SCAI/AVF/AVLS/SIR/SVM/SVS. J Soc Cardiovasc Angiogr Interv. 2024. doi: 10.1016/j.jscai.2023.101205.