Vascular Injury Assessment and Management

Critical Initial Assessment

The American College of Cardiology recommends assessing for signs of acute limb ischemia using the "6 P's": pain, pallor, paresthesias, paralysis, poikilothermia, and pulselessness, with a focus on pain, pallor, paresthesias, paralysis, and poikilothermia 2, 3, 1
The American College of Cardiology suggests that assessing the posterior tibial pulse immediately has greater diagnostic reliability than the dorsalis pedis pulse alone, as the dorsalis pedis pulse can be congenitally absent in healthy individuals 4
Evaluating the timing of symptom onset is crucial, as symptoms developing over hours to days after trauma suggest acute arterial occlusion requiring emergency intervention 2
Comparing to the contralateral limb is essential, as bilateral absence may indicate chronic PAD rather than acute traumatic injury 2

The American College of Radiology recommends measuring ankle-brachial index (ABI), with an ABI <0.9 having 87% sensitivity and 97% specificity for vascular injury 1, 6
CT angiography is the first-line imaging modality, with 96.2% sensitivity and 99.2% specificity for detecting vascular injuries in limb trauma, and is faster and more cost-effective than traditional arteriography 1
The American Academy of Orthopaedic Surgeons suggests that routine vascular assessment includes checking for palpable dorsalis pedis pulse and intact lower extremity sensation in patients with hip fractures from falls 3

The American College of Cardiology recommends starting heparin anticoagulation immediately, which reduces limb loss from 15% to 3%, and obtaining emergent CT angiography to identify the level and cause of occlusion 1, 2
Urgent vascular surgery consultation is necessary for patients with hard signs of vascular injury 2

The American College of Cardiology advises against relying solely on dorsalis pedis pulse assessment, as it can be absent in healthy individuals, and recommends checking posterior tibial pulse as well 4, 5, 2
The American College of Cardiology suggests not assuming chronic PAD without considering acute-on-chronic presentation, as a patient with known PAD can still develop acute thrombosis after trauma 2