I70.535

Clinical Causes: Progressive accumulation of cholesterol and fatty materials within blood vessel walls (atherosclerosis). Previous vascular surgeries involving bypass grafts using nonautologous biological tissues, such as synthetic or donor tissue grafts. Chronic conditions like high blood pressure and high cholesterol levels contribute to vessel narrowing. Smoking and lifestyle factors that accelerate artery damage. Diabetes mellitus, which impairs blood flow and increases the risk of ulcers and infections.

Key Symptoms: Ulcerations on the toes or other parts of the foot, often painful or slow-healing. Discoloration or pallor of the affected toes or foot. Swelling or inflammation around ulcer sites. Pain or discomfort in the leg, especially during activity or walking. Reduced or absent pulses in the affected limb. Coldness or numbness in the foot or toes. Signs of infection such as redness, warmth, or pus in ulcer areas.

Diagnosis Path: Doppler ultrasound to assess blood flow in the affected arteries. Ankle-brachial index (ABI) measurement to compare blood pressure in the ankles versus the arms. Angiography (X-ray with contrast) to visualize blood vessel blockages or narrowing. Physical examination focusing on pulses, skin condition, and ulcer characteristics. Laboratory tests to evaluate blood cholesterol and glucose levels.

Treatment Protocols: Lifestyle modifications such as smoking cessation, healthy diet, and regular exercise under medical guidance. Medications to control cholesterol, blood pressure, and blood sugar levels. Wound care for foot ulcers, including cleaning, dressing, and infection control. Medications to improve blood flow, such as antiplatelet agents. Surgical or endovascular procedures to restore arterial blood flow, including angioplasty or bypass surgery. In some cases, amputation may be necessary if the ulcer becomes severely infected or gangrenous.