Think Vascular First

Lower Extremity Arterial Disease (LEAD), also commonly referred to as Peripheral Artery Disease (PAD), reduces blood flow to the legs and feet. When circulation is impaired, even a small wound can become difficult to heal and may progress to infection, tissue loss, or amputation.

Early recognition, comprehensive vascular assessment, and timely referral are essential for protecting limb function and improving patient outcomes.

Who Is at Risk?

Patients may be at greater risk for LEAD if they are over age 65 or over age 50 with diabetes or a history of smoking. Additional risk factors include:

* Diabetes mellitus
* Current or former tobacco use
* Hypertension
* Hyperlipidemia
* Chronic kidney disease
* Coronary artery or cerebrovascular disease
* Obesity
* A sedentary lifestyle
* A family history of atherosclerotic disease

Recognizing the Warning Signs

Classic symptoms may include leg pain with walking that improves with rest, nighttime or elevated-leg pain, decreased walking tolerance, and numbness or weakness in the feet.

Physical findings can include:

* Diminished or absent pedal pulses
* Cool skin temperature
* Delayed capillary refill
* Pallor when the leg is elevated
* Redness when the leg is lowered
* Shiny, thin, or hairless skin
* Thickened toenails
* Muscle atrophy

Identifying Arterial Wounds

Arterial wounds are commonly found on the toes, heels, lateral ankle, distal foot, and areas exposed to pressure or trauma.

These wounds often have a punched-out appearance with clearly defined borders. The wound bed may be pale, gray, or necrotic, with little granulation tissue and minimal drainage. Arterial wounds are frequently dry and extremely painful, particularly at night or when the leg is elevated.

A painful lower-extremity wound accompanied by absent pulses should always raise concern for arterial insufficiency.

Vascular Assessment

A comprehensive vascular assessment should include pulse palpation, Doppler evaluation when pulses are not palpable, skin-temperature comparison, capillary refill, color changes, walking tolerance, and a complete pain history.

Additional testing may include:

* Ankle-Brachial Index (ABI)
* Toe-Brachial Index (TBI), particularly for patients with diabetes or calcified vessels
* Arterial duplex ultrasound
* Vascular surgery consultation

ABI results should always be considered alongside the patient’s complete clinical presentation.

Treatment Priorities

Patients with rest pain, gangrene, rapidly deteriorating wounds, or suspected critical limb ischemia require prompt vascular evaluation.

Until adequate perfusion has been confirmed or restored, clinicians should protect the wound from additional trauma, maintain an appropriately dry environment, and avoid debridement. Patients should also be monitored closely for infection.

Medical management may include blood-pressure and glucose control, lipid management, smoking cessation, nutritional support, antiplatelet therapy when appropriate, and structured exercise under provider guidance.

For patients with significant ischemia, angioplasty, stenting, or surgical bypass may be necessary to restore blood flow and support wound healing.

Patient Education

Patients should be encouraged to:
* Inspect their feet every day
* Report new wounds, color changes, or increased pain immediately
* Avoid walking barefoot
* Wear properly fitted footwear
* Keep their feet clean and moisturized while avoiding lotion between the toes
* Protect their feet from extreme heat and cold
* Avoid smoking and vaping
* Take medications as prescribed
* Manage blood glucose, blood pressure, and cholesterol
* Keep scheduled vascular and wound-care appointments

When Emergency Evaluation Is Needed

Immediate evaluation is warranted when a patient develops rest pain, gangrene, rapidly worsening ischemic wounds, absent pedal pulses with tissue loss, or a suddenly cold, pale, and painful limb.

Early recognition and referral can significantly reduce the risk of amputation.

The Key Takeaway

Every non-healing lower-extremity wound should prompt consideration of underlying arterial disease. Adequate blood flow is essential for wound healing, and vascular status should be evaluated before lower-extremity debridement or compression therapy.

**Recognize early. Act promptly. Preserve limbs.**