title: Computerized 2-lead resting ECG analysis for the detection of relevant coronary artery stenosis in comparison with angiographic findings.
abstract: To assess the sensitivity and specificity of a new computer-enhanced resting electrocardiographic analysis device for the detection of coronary stenosis, 189 patients (aged 61.3+/-12.9 years, 57 women) scheduled for coronary angiography from 4 Asian centers were included in an observational study. Angiographic results were independently classified for hemodynamically relevant stenosis by 2 angiographers. The device calculated a severity score from 0 to 20. The score was significantly higher for patients with coronary stenosis (5.4+/-1.8 vs 1.7+/-2.1). The study device (cutoff 4.0) identified 73 of 77 patients with stenosis (sensitivity 94.8%, specificity 86.6%). Adjusted positive and negative predictive values were 78.4% and 97.1%, respectively (receiver operating characteristic area under the curve, 0.914 [95% confidence interval, 0.868-0.961]). Subgroup analysis showed no significant influence of sex, age, previous revascularization procedures, or participating center. The new computer-enhanced, resting electrocardiographic analysis device appears to identify patients with relevant coronary stenosis with high sensitivity and specificity.
authors.affiliation: From the Tokyo Heart Center, Kita-shinagawa, Shinagawa, Tokyo, Japan.
authors.forename: Joji
authors.initials: J
authors.lastname: Hosokawa
authors.forename: Joseph T
authors.initials: JT
authors.lastname: Shen
authors.forename: Michael
authors.initials: M
authors.lastname: Imhoff
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017023:Coronary Angiography; D003324:Coronary Artery Disease / Q000175:diagnosis / Q000503:physiopathology; D023921:Coronary Stenosis / Q000175:diagnosis* / Q000503:physiopathology; D004562:Electrocardiography / Q000295:instrumentation / Q000379:methods*; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D008297:Male; D008875:Middle Aged; D008962:Models, Theoretical; D012372:ROC Curve; D012680:Sensitivity and Specificity