Patients who undergo endovascular aortic aneurysm repair (EVAR) may require prolonged radiation exposure affected by several factors. The objectives of this study were to document fluoroscopy time (FT) during EVAR and identify possible factors that influence it. A retrospective analysis of a 180 patients' database with abdominal infrarenal aortic aneurysms submitted to EVAR during a 7-y period was performed. The FT is evaluated regarding risk factors and comorbidities, graft type and patient-related, clinical and technical parameters. FT's median (interquartile range) was 1011 (698-1500) s. Excluder and C3 Excluder were associated with significantly lower FT values when compared with other grafts. Hypertension, dyslipidemia, age >= 70 y, maximum aneurysm diameter >= 6 cm and procedure duration >= 2 h resulted in higher FT values. A significantly lower FT was found for the operations performed in the 7th y of the study's period compared with the previous 6 y, mainly because of the use of Excluder or C3 Excluder grafts. However, these grafts did not show any significant difference in FT values during the 7 y. A significant correlation between FT with age and procedure duration was found. Nevertheless, procedure duration is a poor FT predictor in linear and logistic regressions, although is significantly correlated with FT. Dyslipidemia, procedure duration and graft type are independent predictors of FT larger than the median, whereas only the procedure duration is a predictor for FT larger than the 75th percentile value. The identified factors regarding radiation protection issues should be considered when contemplating abdominal aortic aneurysm repair, however, without compromising the procedure's efficacy. Further work is necessary to identify more potential anatomical, clinical and technical factors affecting procedures' complexity and FT and patient radiation dose during EVAR interventions.
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机译：接受血管内主动脉瘤修复术 （EVAR） 的患者可能需要长时间的辐射暴露，这些辐射暴露受多种因素的影响。本研究的目的是记录 EVAR 期间的透视时间 （FT） 并确定影响它的可能因素。对 180 名患者数据库进行了回顾性分析，这些患者在 7 年期间提交给 EVAR 的腹部肾下主动脉瘤。FT 根据危险因素和合并症、移植物类型和患者相关、临床和技术参数进行评估。FT的中位数（四分位距）为1011（698-1500）秒。与其他移植物相比，Excluder 和 C3 Excluder 的 FT 值显着降低。高血压、血脂异常、年龄 > = 70 岁、最大动脉瘤直径 >= 6 cm 和手术持续时间 >= 2 小时导致更高的 FT 值。与前 6 年相比，在研究期间的第 7 年进行的手术的 FT 显着降低，主要是因为使用了 Excluder 或 C3 Excluder 移植物。然而，这些移植物在 7 年内没有显示出 FT 值的任何显着差异。发现FT与年龄和手术持续时间之间存在显着相关性。然而，在线性和逻辑回归中，手术持续时间是一个较差的 FT 预测因子，尽管与 FT 显着相关。血脂异常、手术持续时间和移植物类型是 FT 大于中位数的独立预测因子，而只有手术持续时间是 FT 大于第 75 个百分位值的预测因子。然而，在考虑腹主动脉瘤修复术时，应考虑已确定的有关辐射防护问题的因素，但不影响手术的疗效。需要进一步的工作来确定更多潜在的解剖学、临床和技术因素，这些因素会影响手术的复杂性以及 EVAR 干预期间的 FT 和患者辐射剂量。
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