Lower extremity limb salvage with cryoplasty: a single-center cohort study

Area of Science:

• Vascular Surgery
• Interventional Cardiology
• Endovascular Therapy

Background:

• Chronic critical limb ischemia (CLI) poses a significant challenge, particularly in patients with comorbidities precluding surgical revascularization.
• Endovascular techniques are increasingly vital for managing peripheral artery disease (PAD) in high-risk populations.
• Cryoplasty represents an emerging endovascular modality for lower extremity revascularization.

Purpose of the Study:

• To review the clinical experience and outcomes of using cryoplasty as the sole endovascular treatment for lower extremity CLI.
• To evaluate the technical success and limb salvage rates associated with cryoplasty in a cohort of patients with CLI.

Main Methods:

• Retrospective cohort study of 88 patients undergoing lower extremity revascularization with cryoplasty between December 2003 and August 2007.
• Kaplan-Meier analysis was employed to assess limb salvage rates.
• Analysis included patients with indications such as non-healing amputations, foot ulcers, disabling claudication, and rest pain.

Main Results:

• A total of 126 lesions were treated in 88 patients with a 97% technical success rate.
• One-year and three-year limb salvage rates were 75% and 63%, respectively.
• A history of smoking was identified as a significant risk factor, tripling the risk of limb loss.

Conclusions:

• Cryoplasty is an emerging and effective endovascular treatment for lower extremity CLI.
• This technique shows promise in limb preservation and avoidance of major amputations in patients with PAD and CLI.
• Further research into cryoplasty for CLI management is warranted, especially considering the impact of risk factors like smoking.