Emergency Department Management of Leg Ulcers

Initial Assessment and Triage

The American Diabetes Association recommends immediately assessing ulcer severity and stability to determine disposition, with severely complicated ulcers requiring hospital admission within 24 hours, while stable uncomplicated ulcers can be managed as outpatients with close follow-up 1, 2, 3
Assess for "red flag" signs requiring urgent specialist referral, including signs of infection, such as hyperemia around wound, cellulitis, purulent drainage, wet gangrene, edema, pain, fever 1, 3
Assess for signs of ischemia, including new areas of necrosis or gangrene, rest pain, hyperemia of the foot, ankle pressure <50 mmHg or ABI <0.5 1, 4

Classify ulcer stability, with stable ulcers healing or not healing but not progressing, and unstable ulcers progressing due to infection, ischemia, or increasing in size/depth 2, 3
Perform vascular assessment to differentiate venous from arterial disease, including checking foot pulses and ankle-brachial index (ABI) 4
Screen for peripheral neuropathy using 10g monofilament test and/or 128 Hz tuning fork in diabetic patients 4

Start empiric antibiotics immediately for moderate-to-severe infections, with mild infections treated with oral antibiotics targeting Staphylococcus aureus and streptococci, and moderate-to-severe infections treated with broad-spectrum parenteral antibiotics 4, 5
Perform surgical debridement when abscess, gas, or necrotizing fasciitis is present 5

Perform sharp debridement of necrotic tissue and surrounding callus 4
Apply appropriate offloading, including non-removable knee-high device for neuropathic plantar forefoot/midfoot ulcers, and removable offloading devices for non-plantar ulcers 4, 6

Apply compression therapy (20-40 mm Hg) combined with wound bed preparation, with minimum 20-30 mm Hg for standard venous disease, and 30-40 mm Hg for severe disease (C5-C6) 5
Reduce compression to 20-30 mm Hg if ABI 0.6-0.9, and exercise extreme caution with ABI <0.6 5

Admit to hospital (within 24 hours) severely complicated ulcers requiring deep infection with systemic signs, critical ischemia requiring urgent revascularization, exposed bone/joint with osteomyelitis, or necrotizing infection 1, 2, 3, 5
Refer to specialist (within 48-72 hours) complicated or unstable ulcers with progressive infection despite initial treatment, worsening ischemia, ulcers failing to improve with standard care, or need for surgical debridement or revascularization 1, 2, 3, 5
Discharge with outpatient follow-up stable uncomplicated ulcers that show no signs of infection or ischemia, do not require immediate surgery, can be managed with compression/offloading, and have adequate vascular supply 1, 2, 3, 5, 6

Provide specific self-care education, including examining feet daily and contacting provider if new lesions develop, not walking barefoot or in thin-soled slippers, washing feet daily with careful drying between toes, using emollients for dry skin, and cutting toenails straight across 4, 7
Maintain compression therapy continuously and elevate legs when resting for venous ulcers, and continue offloading device use and monitor for signs of infection for diabetic ulcers 4, 5