论文部分内容阅读
目的:探讨运动后踝臂指数(postexercise ankle-brachial index,postexercise ABI)对下肢动脉疾病(lower extremity arterial disease,LEAD)的诊断阈值和诊断价值。方法:收集本院心内科119例患者进行下肢动脉CTA检测、静息ABI和运动后ABI检测,根据影像学结果,将双下肢任一血管管腔直径狭窄≥50%为LEAD组,管腔直径狭窄<50%为非LEAD组。根据下肢动脉狭窄率与静息ABI和运动后ABI的关系绘制受试者工作特征曲线(receiver operator characteristic curve,ROC curve),比较两者的曲线下面积和诊断阈值。结果:运功后ABI曲线下面积大于静息ABI的曲线下面积(0.988比0.948,P<0.01),且敏感性和特异性均高于静息ABI。结论:运动后ABI在LEAD的筛检过程中比静息ABI更具诊断意义。
Objective: To investigate the diagnostic threshold and diagnostic value of postexercise ankle-brachial index (ABE) on lower extremity arterial disease (LEAD). Methods: One hundred and ninety-nine patients in our hospital were enrolled in this study. The CTA, resting ABI and ABI were measured in the lower extremity arteries. According to the imaging findings, the diameter of any vessel in both lower extremities was ≥50% Slight <50% of non-LEAD group. The receiver operating characteristic curve (ROC curve) was drawn according to the relationship between the stenosis rate of lower extremity artery and resting ABI and ABI after exercise. The area under the curve and the diagnostic threshold were compared. Results: The area under the curve of ABI after exercise was greater than the area under the curve of resting ABI (0.988 vs 0.948, P <0.01), and the sensitivity and specificity were higher than resting ABI. Conclusion: ABI is more diagnostic than resting ABI during the LEAD screening after exercise.