Peripheral Arterial Disease (PAD) Nursing Guide 2026
PAD affects 8–12 million Americans. It is a marker of systemic atherosclerosis — patients with PAD have 2–6x higher risk of MI and stroke. Nursing recognition of acute limb ischemia can prevent amputation.
PAD vs Venous Insufficiency
| Feature | PAD (Arterial) | Chronic Venous Insufficiency (CVI) |
|---|
| Pain character | Intermittent claudication (cramping on walking; relieved by rest); rest pain in severe PAD | Aching, heaviness, worse with prolonged standing; better with elevation |
| Pulse | Diminished or absent distal pulses | Present (venous issue, not arterial) |
| Skin | Thin, shiny, hairless; pale or cyanotic; cool | Brown discoloration (hemosiderin), lipodermatosclerosis, varicosities |
| Edema | Absent or minimal | Dependent pitting edema; worse at end of day |
| Ulcer location | Toes, feet, lateral lower leg (pressure points) | Medial malleolus, gaiter area |
| Ulcer appearance | Punched-out, pale, necrotic, minimal drainage | Irregular, wet, ruddy, heavy drainage |
| Position for pain relief | Hang legs DOWN (gravity increases perfusion) | Elevate legs (reduces venous pressure) |
Never elevate arterial insufficiency legs. Elevation reduces perfusion pressure and worsens ischemia. Arterial patients dangle their legs to get relief — remember this distinction.
Vascular Assessment
Lower Extremity Pulses
| Pulse | Location | Scale (0–4) |
|---|
| Femoral | Femoral triangle (below inguinal ligament midpoint) | 0=absent, 1=barely palpable, 2=normal, 3=bounding, 4=aneurysmal |
| Popliteal | Posterior knee; knee flexed 30° | Often hard to palpate; use Doppler if not found |
| Posterior tibial (PT) | Behind medial malleolus | Most reliable distal pulse for PAD monitoring |
| Dorsalis pedis (DP) | Dorsum of foot, lateral to extensor hallucis longus | Absent in 8% of normal population — check PT too |
Capillary Refill
- Normal: <2 seconds
- 2–4 seconds: mildly impaired perfusion
- >4 seconds: severely impaired; concern for acute ischemia
Ankle-Brachial Index (ABI)
ABI = highest ankle systolic BP (DP or PT) ÷ highest brachial systolic BP
This article was created with AI assistance.
| ABI Value | Interpretation |
|---|
| >1.3 | Non-compressible (calcified vessels); falsely elevated; order toe-brachial index (TBI) instead |
| 1.0–1.3 | Normal |
| 0.91–0.99 | Borderline (some guidelines 0.9–1.0 = normal) |
| 0.71–0.90 | Mild PAD; usually claudication symptoms |
| 0.41–0.70 | Moderate PAD; intermittent claudication to rest pain |
| ≤0.40 | Severe PAD; rest pain, tissue loss; critical limb ischemia |
Nursing tip: ABI ≤0.9 = PAD confirmed. ABI ≤0.4 = critical limb ischemia = surgical emergency.
Acute Limb Ischemia: 6 P's
Acute limb ischemia is a surgical emergency. Without revascularization within 4–6 hours, permanent nerve and muscle damage occurs. Amputation risk after 6 hours is significant.
| P | Sign | Significance |
|---|
| Pain | Sudden severe, unrelenting limb pain | First symptom; out of proportion to exam |
| Pallor | Limb turns pale, waxy white | No arterial blood reaching tissue |
| Pulselessness | Absent distal pulses | Confirm with Doppler; may need arterial line |
| Paresthesia | Numbness, tingling, burning | Nerve ischemia — time-sensitive finding |
| Paralysis | Loss of motor function | Late sign; irreversible damage likely if present |
| Poikilothermia | Limb becomes cold as environment | Total loss of perfusion |
Nursing Actions for Acute Limb Ischemia
- Call physician/vascular surgeon IMMEDIATELY
- Keep limb at or slightly below heart level (do NOT elevate)
- Keep limb warm (light covering); avoid heat (can't sense burns)
- Anticoagulation (heparin IV bolus) per order
- IV access; labs; type & screen
- Prepare patient for emergent angiography, thrombolysis, or surgical embolectomy
- Mark pulses with pen; reassess q15–30 min; document timeline precisely
Arterial vs Venous Wound Care
Arterial Wounds
- Goal: maintain moist environment; protect from trauma; maximize perfusion
- NON-compressive dressings — compression worsens arterial flow
- Protect bony prominences (heels, toes); use foam padding
- Debridement only after revascularization or by wound specialist; dry eschar on heel — leave intact unless infected (dry eschar = natural biologic bandage in ischemic limb)
- Refer to vascular surgery early; wounds do not heal without adequate perfusion
Venous Wounds
- Compression therapy (compression bandages or stockings 20–40 mmHg) = cornerstone of treatment
- Confirm ABI ≥0.8 before applying compression (do NOT compress with arterial insufficiency)
- Moist wound environment; absorptive dressings for high drainage
- Elevation when at rest
General PAD Nursing Interventions
- Smoking cessation: HIGHEST priority lifestyle modification; smoking is the single biggest modifiable PAD risk factor
- Exercise: Supervised walking program (walk to claudication pain, rest, repeat) — proven to extend walking distance
- Antiplatelet therapy: Aspirin 81 mg or clopidogrel 75 mg daily (confirm order)
- Statin therapy: Reduces cardiovascular events; confirm patient on statin
- Blood pressure and glucose control: Target BP <130/80; HbA1c <7% in diabetics
- Foot care education: Daily inspection; moisturize (not between toes); no hot water; proper-fitting shoes; no barefoot walking
Post-Revascularization Nursing Care
After Bypass Surgery or Endovascular Procedure
- Hourly neurovascular checks: pulse (mark with Doppler), color, temperature, capillary refill, sensation, movement
- Compare to pre-op baseline and contralateral limb
- Notify MD immediately for: absent pulse, color change, increased pain, new paresthesias, motor loss
- Anticoagulation (heparin or argatroban) per order; monitor aPTT or ACT
- Post-angiography access site: pressure dressing; check for hematoma, bleeding, retroperitoneal hematoma (back pain, falling BP)
- Contrast nephropathy monitoring: urine output, creatinine post-procedure
NCLEX High-Yield Points
- PAD pain: intermittent claudication = relieved by rest; rest pain = severe disease
- PAD: leg position DOWN (improves perfusion); CVI: leg position UP (reduces venous pressure)
- ABI ≤0.9 = PAD; ABI ≤0.4 = critical limb ischemia (surgical emergency)
- 6 P's of acute limb ischemia: Pain, Pallor, Pulselessness, Paresthesia, Paralysis, Poikilothermia
- Paralysis = late, irreversible sign; call vascular surgery IMMEDIATELY
- NEVER compress a limb with arterial insufficiency — check ABI ≥0.8 before compression
- Highest-priority PAD lifestyle change: smoking cessation
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