Critical limb ischemia

Area of Science:

• Vascular Medicine
• Cardiovascular Research
• Regenerative Medicine

Background:

• Critical limb ischemia (CLI) is the most severe manifestation of peripheral arterial disease, characterized by significant morbidity and mortality.
• Its pathophysiology involves complex macrovascular and microvascular circulatory dysfunction in the lower limbs, driven by atherosclerotic vascular remodeling, angiogenesis, and arteriogenesis.
• Common symptoms include rest pain, trophic skin changes, and tissue loss, necessitating prompt diagnosis and management.

Purpose of the Study:

• To provide a comprehensive overview of the pathophysiology, clinical manifestations, diagnostic methods, and therapeutic strategies for critical limb ischemia.
• To highlight the importance of risk factor control, medical management, and infection treatment in CLI patients.
• To discuss emerging therapeutic angiogenesis approaches and the complex decision-making process for revascularization versus amputation.

Main Methods:

• Review of current literature on critical limb ischemia pathophysiology and management.
• Synthesis of diagnostic criteria including physical examination, ankle-brachial index, duplex-ultrasound, and angiography.
• Evaluation of medical therapies, surgical interventions, and novel regenerative approaches.

Main Results:

• CLI results from advanced atherosclerotic disease affecting lower limb circulation.
• Diagnosis relies on clinical presentation and non-invasive/invasive vascular imaging.
• Effective management involves risk factor modification, antiplatelet therapy, infection control, and consideration of revascularization or amputation.

Conclusions:

• Critical limb ischemia management is complex, requiring a multidisciplinary approach.
• Risk factor control and timely intervention are crucial for improving outcomes.
• Further research, particularly phase II and III trials for therapeutic angiogenesis, is needed to advance treatment options.