A prognostic model for tissue viability in patients with lower-extremity arterial trauma
Level of Primary Vascular Injury
Level of arterial injury Femoral (includes common and superficial femoral arteries), Popliteal, and Tibial (the number of tibial arteries injured; includes peroneal, anterior tibial and posterior tibial).
Management of Arterial Injury
Primary repair (including thrombectomy, lateral repair, patch angioplasty and end-to-end anastomosis), Interposition Graft (including those performed with autologous vein and those with prosthetic material), Ligation.
Vascular Injury at Multiple Levels
Arterial injuries at more than one anatomical level
Tibial - 1 Artery Injured
Tibial - 2 Arteries Injured
Tibial - 3 Arteries Injured
Unknown - Below Knee
Unknown - Above Knee
Duration of Ischaemia Ordinal 1) Less than one hour, 2) between one and three hours, 3) between three and six hours, and 4) greater than six hours.
0 < t ≤ 1
1 < t ≤ 3
3 < t ≤ 6
t > 6
Associated Injuries & Conditions
Soft Tissue Injury
Degree of soft tissue injury in the anatomical zone of the limb corresponding to the arterial injury: Thigh (Femoral), Knee (Popliteal), and Leg (Tibial). None, Mild (no tissue loss), Moderate (< 25% tissue loss), Severe (25 – 75% tissue loss), Profound (> 75% tissue loss, mangled extremity)
Associated Bone Fracture
Fracture or dislocation at same level as arterial injury.
Degree of haemorrhagic shock: None (SBP always > 90mmHg, ≤ 2 units blood/24 hours), Compensated (SBP transiently below 90mmHg, > 2 units blood/24 hours), or Uncompensated (SBP consistently below 90mmHg, massive blood transfusion, coagulopathy).
Mechanism of Injury
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