Comparison of the Selvester QRS scoring system applied on standard versus high-resolution electrocardiographic recordings.
A comparison was performed between the points measured using the Selvester QRS scoring system in 60 electrocardiograms (ECGs) displayed in both a standard format as well as a 4-fold magnified (quad-plot) format. Fifty criteria (a maximum possibility of 31 points) were evaluated in each ECG. The data indicate that in 50% of the ECGs, an identical number of points were measured. However, there was a single point difference in 31%, 2 points in 15%, and more than 2 points in 4%. The differences were primarily because of points scored on the quad-plot but not on the standard ECG. Thus, a systematic underestimation of infarct size may occur when the Selvester QRS score is measured manually from a standard ECG.
Wagner
Galen S
GS
Department of Medicine at Duke University Medical Center, Durham, NC, USA. wagne004@mc.duke.edu
Greenfield
Joseph C
JC
Rembert
Judith C
JC
Warren
James W
JW
Albano
Alfred
A
Palmeri
Michael A
MA
Horácek
Bohumil Milan
BM
D000465:Algorithms; D003936:Diagnosis, Computer-Assisted / Q000379:methods*; D004562:Electrocardiography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D009203:Myocardial Infarction / Q000175:diagnosis*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity