Clark Elaine N, Katibi Ibraheem, Macfarlane Peter W
Institute of Cardiovascular and Medical Sciences, University of Glasgow, UK.
Department of Medicine, University of Ilorin, Nigeria.
J Electrocardiol. 2014 Mar-Apr;47(2):151-4. doi: 10.1016/j.jelectrocard.2013.10.007. Epub 2013 Nov 4.
The purpose of this study was to define criteria suited to automated detection of end QRS notching and slurring and to evaluate their accuracy. One hundred resting 12 lead ECGs from young adult men, split randomly into equal training and test sets, were examined independently by two reviewers for the presence of such notching or slurring. Consensus was reached by re-examination. Logic was added to the Glasgow resting ECG program to automate the detection of the phenomenon. After training, the automated detection had a sensitivity (SE) of 92.1% and a specificity (SP) of 96.6%. For the test set, SE was 90.5%, SP 96.5%. Two populations of healthy subjects--one Caucasian, one Nigerian--were analysed using the automated method. The prevalence of notching/slurring with peak/onset amplitude respectively ≥ 0.1 mV in two contiguous inferolateral leads was 23% and 29% respectively. In conclusion, the detection of end QRS notching or slurring can be automated with a high degree of accuracy.
本研究的目的是确定适合自动检测终末QRS切迹和顿挫的标准，并评估其准确性。从年轻成年男性中选取100份静息12导联心电图，随机分为等量的训练集和测试集，由两名阅片者独立检查是否存在此类切迹或顿挫。通过重新检查达成共识。在格拉斯哥静息心电图程序中添加逻辑以实现该现象的自动检测。训练后，自动检测的灵敏度（SE）为92.1%，特异性（SP）为96.6%。对于测试集，SE为90.5%，SP为96.5%。使用自动方法分析了两组健康受试者——一组为白种人，一组为尼日利亚人。在两个相邻下侧壁导联中，切迹/顿挫伴峰/起始振幅分别≥0.1 mV的发生率分别为23%和29%。总之，终末QRS切迹或顿挫的检测可以高度准确地实现自动化。
