European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery · 2019
A Novel Shaggy Aorta Scoring System to Predict Embolic Complications Following Thoracic Endovascular Aneurysm Repair.
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Maeda Koji, Ohki Takao, Kanaoka Yuji, Shukuzawa Kota, Baba Takeshi, Momose Masamichi
Аннотация
OBJECTIVE: The aim of this study was to investigate the correlation between shaggy aorta and embolic complications during thoracic endovascular aneurysm repair (TEVAR), based on a shaggy aorta scoring system.
METHODS: The entire aorta was assessed based on 5 mm slice computed tomography (CT) from the sinotubular junction to the aortic bifurcation using a three dimensional workstation. One shaggy point (shaggy score) was given when the following conditions were met: 1) ulcer like thrombus, 2) maximum thrombus thickness ≥ 5 mm, and 3) mural thrombus occupies more than two thirds of the circumference of the aortic diameter on reconstructed CT of the axial statue. Subsequently, each point was added to obtain the total shaggy score.
RESULTS: The outcomes of 301 patients undergoing TEVAR were evaluated. Post-operative embolic complications including stroke, acute renal failure, and distal embolisation, were identified in 21 cases (7.0%). The average shaggy score for the entire cohort was 2.4 ± 5.6 points, whereas it was 7.9 ± 7.1 in those patients with embolic complications (E group) and 2.0 ± 5.3 in those without embolic complications (N group, p = .001). There were no statistical differences in 30 day mortality (p = .70), but overall survival at two years was significantly lower in the E group (E: 58.8%, N: 93.3%, p < .001). Multivariable analysis revealed that the predictors of post-operative embolic complication were past history of cerebrovascular disease (p = .001, OR 5.90, 95% CI 2.14-16.29) and shaggy score (p < .001, OR 1.13, 95% CI 1.06-1.19). The area under the ROC curve was 0.77, and the cut off value of the shaggy score using the Youden index was 3 points (sensitivity: 71.4%, specificity: 81.4%).
CONCLUSION: This shaggy score is a useful method to predict post-operative embolic complications following TEVAR. Because the risk of embolic complications was relatively high in patients with a high shaggy score, the indication for TEVAR in such patients should be considered carefully.
METHODS: The entire aorta was assessed based on 5 mm slice computed tomography (CT) from the sinotubular junction to the aortic bifurcation using a three dimensional workstation. One shaggy point (shaggy score) was given when the following conditions were met: 1) ulcer like thrombus, 2) maximum thrombus thickness ≥ 5 mm, and 3) mural thrombus occupies more than two thirds of the circumference of the aortic diameter on reconstructed CT of the axial statue. Subsequently, each point was added to obtain the total shaggy score.
RESULTS: The outcomes of 301 patients undergoing TEVAR were evaluated. Post-operative embolic complications including stroke, acute renal failure, and distal embolisation, were identified in 21 cases (7.0%). The average shaggy score for the entire cohort was 2.4 ± 5.6 points, whereas it was 7.9 ± 7.1 in those patients with embolic complications (E group) and 2.0 ± 5.3 in those without embolic complications (N group, p = .001). There were no statistical differences in 30 day mortality (p = .70), but overall survival at two years was significantly lower in the E group (E: 58.8%, N: 93.3%, p < .001). Multivariable analysis revealed that the predictors of post-operative embolic complication were past history of cerebrovascular disease (p = .001, OR 5.90, 95% CI 2.14-16.29) and shaggy score (p < .001, OR 1.13, 95% CI 1.06-1.19). The area under the ROC curve was 0.77, and the cut off value of the shaggy score using the Youden index was 3 points (sensitivity: 71.4%, specificity: 81.4%).
CONCLUSION: This shaggy score is a useful method to predict post-operative embolic complications following TEVAR. Because the risk of embolic complications was relatively high in patients with a high shaggy score, the indication for TEVAR in such patients should be considered carefully.