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Peripheral Arterial Disease vs Venous Insufficiency: Arterial vs Venous Ulcer Comparison

Telling a patient with arterial ulcers to elevate their legs worsens ischemia and risks limb loss. Telling a patient with venous ulcers to dangle worsens edema. The NCLEX loves testing leg positioning — get the vascular etiology wrong and you'll pick the answer that harms the client.

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Comparison

Side-by-side2 compared
Focus
Dimension
Arterial Disease (PAD)
Venous Insufficiency
Pathophysiology & risk
  • Atherosclerotic arterial narrowing
  • ↓ Arterial perfusion to extremities
  • Smoking, diabetes, hyperlipidemia
  • Valve incompetence then venous pooling
  • Blood stasis in lower legs
  • Prolonged standing, DVT history, obesity
Signs & symptoms
  • ★Claudication relieved by rest
  • Diminished/absent pulses
  • Cool, pale leg
  • Thin shiny hairless skin
  • Dependent rubor
  • ★Brown hemosiderin staining
  • Dull ache, eased by elevation
  • Pulses present
  • Pitting edema, stasis dermatitis
Diagnostics & labs
  • ★ABI < 0.9 confirms PAD (<0.4 severe)
  • Doppler, arteriography map lesions
  • ABI ≥ 0.9 rules out arterial cause
  • Venous duplex shows reflux
Nursing priorities
  • ★Dangle/lower legs to perfuse
  • Do NOT elevate legs
  • Protect feet from injury
  • Supervised walking program
  • Elevate legs above heart
  • Avoid prolonged standing
  • Compression once ABI is adequate
Management
  • Smoking cessation
  • Antiplatelet, cilostazol, statin
  • Revascularization if severe
  • No compression if ABI < 0.5
  • Compression stockings 30–40 mmHg
  • Leg elevation
  • Moist dressings for ulcers
Patient teaching
  • Keep legs dependent
  • Inspect feet daily
  • Stop smoking
  • Walk to the point of pain, rest
  • Elevate legs several times daily
  • Apply stockings before rising
  • Avoid prolonged sitting/standing
Red flags — escalate
  • Sudden cold, pale, pulseless limb
  • New unilateral swelling, warmth then DVT
  • Ulcer spreading redness then cellulitis
Complications
  • Distal toe/foot ulcers, pressure points
  • Gangrene, limb loss
  • Medial malleolus (gaiter) ulcers
  • Chronic edema, recurrent cellulitis
Pathophysiology & risk

Arterial Disease (PAD)

  • Atherosclerotic arterial narrowing
  • ↓ Arterial perfusion to extremities
  • Smoking, diabetes, hyperlipidemia

Venous Insufficiency

  • Valve incompetence then venous pooling
  • Blood stasis in lower legs
  • Prolonged standing, DVT history, obesity
Signs & symptoms

Arterial Disease (PAD)

  • ★Claudication relieved by rest
  • Diminished/absent pulses
  • Cool, pale leg
  • Thin shiny hairless skin
  • Dependent rubor

Venous Insufficiency

  • ★Brown hemosiderin staining
  • Dull ache, eased by elevation
  • Pulses present
  • Pitting edema, stasis dermatitis
Diagnostics & labs

Arterial Disease (PAD)

  • ★ABI < 0.9 confirms PAD (<0.4 severe)
  • Doppler, arteriography map lesions

Venous Insufficiency

  • ABI ≥ 0.9 rules out arterial cause
  • Venous duplex shows reflux
Nursing priorities

Arterial Disease (PAD)

  • ★Dangle/lower legs to perfuse
  • Do NOT elevate legs
  • Protect feet from injury
  • Supervised walking program

Venous Insufficiency

  • Elevate legs above heart
  • Avoid prolonged standing
  • Compression once ABI is adequate
Management

Arterial Disease (PAD)

  • Smoking cessation
  • Antiplatelet, cilostazol, statin
  • Revascularization if severe
  • No compression if ABI < 0.5

Venous Insufficiency

  • Compression stockings 30–40 mmHg
  • Leg elevation
  • Moist dressings for ulcers
Patient teaching

Arterial Disease (PAD)

  • Keep legs dependent
  • Inspect feet daily
  • Stop smoking
  • Walk to the point of pain, rest

Venous Insufficiency

  • Elevate legs several times daily
  • Apply stockings before rising
  • Avoid prolonged sitting/standing
Red flags — escalate

Arterial Disease (PAD)

  • Sudden cold, pale, pulseless limb

Venous Insufficiency

  • New unilateral swelling, warmth then DVT
  • Ulcer spreading redness then cellulitis
Complications

Arterial Disease (PAD)

  • Distal toe/foot ulcers, pressure points
  • Gangrene, limb loss

Venous Insufficiency

  • Medial malleolus (gaiter) ulcers
  • Chronic edema, recurrent cellulitis

★ marks the fact that sets a column apart.

Clinical Pearl

Arterial = painful, pale, pulseless — dangle to perfuse. Venous = edema, brown, bounding pulses — elevate to drain.

Component Topics

Peripheral Arterial Disease — PADPeripheral Vascular Assessment

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