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NOT YET RECRUITING
NCT07731997
NA

IVUS Guidance in BTK Interventions

Sponsor: Shin Kong Wu Ho-Su Memorial Hospital

View on ClinicalTrials.gov

Summary

Chronic limb-threatening ischemia (CLTI) is a severe form of peripheral artery disease in which very poor blood flow in the arteries below the knee can cause rest pain, non-healing wounds, and even loss of the limb. It is often treated with endovascular therapy (EVT), a minimally invasive procedure that opens the blocked artery, but the artery frequently narrows or closes again afterward. These procedures are usually guided by X-ray pictures taken with dye (angiography). Intravascular ultrasound (IVUS) is an imaging tool that uses a small catheter inside the artery to give a more detailed view of the vessel, which may help doctors open it more completely. It is not yet clear whether adding IVUS improves results below the knee. This study is testing whether guiding treatment with IVUS plus angiography keeps the artery open better than angiography alone. Adults aged 18 or older with CLTI who are having endovascular therapy for a blocked artery below the knee may take part. Participants are assigned by chance to be treated with either both imaging methods or angiography alone, and are followed for 12 months. The main question is how well the treated artery stays open at 6 months; researchers will also compare repeat procedures, amputation, complications, wound healing, survival, and quality of life.

Official title: Intravascular Ultrasound IMaging vs Angiography-Guided EVT in Below-the-Knee Arteries

Key Details

Gender

All

Age Range

18 Years - Any

Study Type

INTERVENTIONAL

Enrollment

212

Start Date

2026-08

Completion Date

2030-07

Last Updated

2026-07-28

Healthy Volunteers

No

Interventions

PROCEDURE

Intravascular ultrasound-guided EVT

Endovascular therapy of the below-the-knee artery is guided by intravascular ultrasound (IVUS) imaging in addition to X-ray angiography, with IVUS used to assess the lesion, size and select devices, optimize treatment, and confirm the final result.

PROCEDURE

Angiography-guided EVT

Endovascular therapy of the below-the-knee artery is guided by X-ray angiography with contrast dye alone, without the use of intravascular ultrasound, to assess the lesion, size and select devices, and judge the final result.

Locations (4)

Chi Mei Medical Center

Tainan, Taiwan

National Taiwan University Hospital

Taipei, Taiwan

Shin Kong Wu Ho-Su Memorial Hospital

Taipei, Taiwan

Linkou Chang Gung Memorial Hospital

Taoyuan, Taiwan