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Predictive factors of amputation in infra-inguinal vascular trauma: a monocentric experience.
Annals of Vascular Surgery 2023 March 10
OBJECTIVES: Infra-inguinal vascular injuries (IIVI) are emergencies involving both functional and vital prognosis. The choice between saving the limb or doing a first-line amputation is difficult even for an experienced surgeon. The aims of this work are to analyze early outcomes in our center and to identify predictive factors for amputation.
M METHODS: Between 2010 and 2017, we reviewed retrospectively patients with IIVI. The main criteria for judgement were: primary, secondary and overall amputation. Two groups of potential risk factors of amputation were analyzed: Those related to the patient: age, shock, ISS score; those related to the lesion: mechanism, above or below the knee, bone lesions, venous lesions and skin decay. A univariate and multivariate analysis were performed to determine the risk factor(s) independently associated with the occurrence of amputation.
RESULTS: 57 IIVI were found in 54 patients. The mean ISS was 32,3 ± 21. A primary amputation was performed in 19%, and secondary in 14% of cases. Overall amputation rate was 35% (n=19). Multivariate analysis reveals that the ISS is the only predictor of primary (p=0.009; OR:1.07; CI:1.01-1.12) and global (p=0.04; OR:1.07; IC:1.02-1.13) amputation. A threshold value of 41 was selected as a primary amputation risk factor with a negative predictive value of 97%.
CONCLUSIONS: The ISS is a good predictor of the risk of amputation in IIVI. A threshold of 41 is an objective criterion helping to decide for a first-line amputation. Advanced age and hemodynamic instability should not be important in the decision tree.
M METHODS: Between 2010 and 2017, we reviewed retrospectively patients with IIVI. The main criteria for judgement were: primary, secondary and overall amputation. Two groups of potential risk factors of amputation were analyzed: Those related to the patient: age, shock, ISS score; those related to the lesion: mechanism, above or below the knee, bone lesions, venous lesions and skin decay. A univariate and multivariate analysis were performed to determine the risk factor(s) independently associated with the occurrence of amputation.
RESULTS: 57 IIVI were found in 54 patients. The mean ISS was 32,3 ± 21. A primary amputation was performed in 19%, and secondary in 14% of cases. Overall amputation rate was 35% (n=19). Multivariate analysis reveals that the ISS is the only predictor of primary (p=0.009; OR:1.07; CI:1.01-1.12) and global (p=0.04; OR:1.07; IC:1.02-1.13) amputation. A threshold value of 41 was selected as a primary amputation risk factor with a negative predictive value of 97%.
CONCLUSIONS: The ISS is a good predictor of the risk of amputation in IIVI. A threshold of 41 is an objective criterion helping to decide for a first-line amputation. Advanced age and hemodynamic instability should not be important in the decision tree.
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