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  • Title: The reliability of physical examination in diagnosing arterial injury in penetrating trauma to extremities: A first look at different anatomical regions and injury mechanisms.
    Author: Le Roux J, Burger M, Du Preez G, Ferreira N.
    Journal: S Afr Med J; 2021 Sep 02; 111(9):891-895. PubMed ID: 34949255.
    Abstract:
    BACKGROUND: The accuracy of physical examination to exclude arterial injury in penetrating trauma to extremities has been well established. OBJECTIVES: To determine whether the accuracy of physical examination to exclude arterial injury is similar to that of a computed tomography arteriogram (CTA) for different anatomical regions and mechanisms of injury, and in patients with concomitant fractures compared with those without. METHODS: A retrospective review was conducted on all patients who underwent CTA for penetrating injuries to an extremity between 1 June 2016 and 30 June 2017. The presence of arterial injuries was noted, and these were grouped into anatomical areas. Clinical notes were reviewed for the presence of hard signs of arterial injury at initial examination. RESULTS: A total of 220 lower limb and 133 upper limb CTAs were included. The mean patient age was 28.9 years (range 11 - 68). The overall sensitivity of physical examination in detecting a CTA-confirmed arterial injury was 95.3% (95% confidence interval (CI) 88.4 - 98.7), with a specificity of 93.9% (95% CI 90.2 - 96.4). Physical examination of the thigh had the highest specificity of 96.4% (95% CI 91.8 - 98.8), followed by the lower leg at 94.4% (95% CI 81.3 - 99.3), the upper arm at 89.6% (95% CI 79.7 - 95.7) and the forearm at 77.8% (95% CI 40.0 - 97.2). For gunshot wounds the specificity was 96.1% (95% CI 92.4 - 98.3), while for stab wounds it was 86.8% (95% CI 74.7 - 94.5). CONCLUSIONS: This study agrees with current literature indicating that physical examination has high specificity in detecting arterial injury in the setting of penetrating trauma to an extremity. However, it shows that the specificity is not equal for all anatomical regions or mechanisms of injury.
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