Validity and reliability of the ankle-brachial index by oscillometric blood pressure and automated ankle-brachial index
Validity and reliability of the ankle-brachial index by oscillometric blood pressure and automated ankle-brachial index
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DOI：
10.4103/jrms.jrms_728_16
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发表时间：
2017-04-01
影响因子：
1.6
通讯作者：
Dutsadeevettakul, Somchai
中科院分区：
文献类型：
--
作者：
Chongthawonsatid, Sukanya;Dutsadeevettakul, Somchai
背景资料：本研究旨在评估踝臂指数（ABI）的有效性和可靠性，并与自动ABI作为金标准进行比较。材料和方法：本研究在泰国金禧医学中心进行。所有数据均收集自303名有外周动脉疾病（PAD）风险的患者，这些患者年龄在45岁或以上，并于2015年6月至12月期间在门诊接受治疗。在医疗诊所随访的患者同时进行了自动血压测量（Terumo，ES-P600）和自动ABI（自动血压测量法）。使用自动ABI作为金标准，确定了动脉血压测量预测ABI异常（< 0.90）的灵敏度、特异性、阳性预测值和阴性预测值。结果：两种方法的ABI值相似。血压计BP法测定ABI右侧ABI（临界点< 0.90）的敏感性为88.89%，特异性为99.32%，准确性为99.01%，阳性预测值为80%，阴性预测值为99.32%，而左侧ABI的敏感性为69.23%，特异性为99.66%，准确率为98.35%，阳性预测值为90%，阴性预测值为98.63%。经Kappa统计分析，血压测量法的可靠性右侧为0.84，左侧为0.77（P = 0.000）。总结：在初级卫生保健机构中，对于无严重动脉闭塞的患者，动脉血压测量法是传统自动ABI测定的可靠和有用的替代方法，可用于估计PAD的患病率和筛查。
Background: This study was conducted to assess the validity and reliability of ankle-brachial index (ABI) by oscillometric blood pressure (BP) measurement as compared with an automated ABI as a gold standard. Materials and Methods: This study was conducted at Golden Jubilee Medical Center, Thailand. All the data were collected from 303 patients at risk of peripheral arterial disease (PAD) who were 45 years of age or above and who underwent treatment at the outpatient medical clinic between June and December 2015. Patients who were followed up at the medical clinic had both oscillometric BP measurement (Terumo, ES-P600) and an automated ABI (oscillometric method) at the same time. Sensitivity, specificity, positive predictive value, and negative predictive value of the oscillometric BP measurements to predict an abnormal ABI (< 0.90) were determined using the automated ABI as the gold standard. Results: ABI values were similar between the two methods. The oscillometric BP method for determining an ABI (cutoff point < 0.90) on the right side had a sensitivity of 88.89%, specificity of 99.32%, an accuracy of 99.01%, a positive predictive value of 80%, and a negative predictive value of 99.32% whereas ABI on the left side had a sensitivity of 69.23%, a specificity of 99.66%, an accuracy of 98.35%, a positive predictive value of 90%, and a negative predictive value of 98.63%. Reliability of the oscillometric BP method by Kappa statistics was 0.84 on the right side and 0.77 on the left side (P = 0.000). Conclusion: The oscillometric BP method is a reliable and useful alternative to conventional automated ABI determination in patients with no severe arterial occlusion for estimation of the prevalence and screening of PAD in primary health-care settings.