TY - GEN
T1 - Evaluating rest ECG amplitude changes using the ECG variability contour method
AU - Dori, Guy
AU - Gershinsky, M.
AU - Ben-Haim, S.
AU - Lewis, B. S.
AU - Bitterman, H.
PY - 2009
Y1 - 2009
N2 - The "ECG variability contour" (EVC) method was studied with real life rest ECG. Three 1-min long, 12-lead, rest ECG formed the data sets. Mean ECG complex was calculated for each data set, and subtracted from it and the other 2 data sets, forming 9 residue matrices. Residue matrix variables were: (1) EVC reflecting ECG variability (2) normalized cumulative sum (NCS) reflecting consistent amplitude changes, and (3) the number of points of the NCS lying outside EVC, which defined a significant ECG change. 1052 ECG leads (92 examinees) were analyzed. In 73% of leads the temporal distance between the data set and the subtracted mean ECG had an effect. <1 point (0.5%) of the NCS was located outside the EVC. Using the EVC method, it was demonstrated that consistent ECG amplitude changes may be accurately localized to the corresponding ECG component, and these changes were rare at rest.
AB - The "ECG variability contour" (EVC) method was studied with real life rest ECG. Three 1-min long, 12-lead, rest ECG formed the data sets. Mean ECG complex was calculated for each data set, and subtracted from it and the other 2 data sets, forming 9 residue matrices. Residue matrix variables were: (1) EVC reflecting ECG variability (2) normalized cumulative sum (NCS) reflecting consistent amplitude changes, and (3) the number of points of the NCS lying outside EVC, which defined a significant ECG change. 1052 ECG leads (92 examinees) were analyzed. In 73% of leads the temporal distance between the data set and the subtracted mean ECG had an effect. <1 point (0.5%) of the NCS was located outside the EVC. Using the EVC method, it was demonstrated that consistent ECG amplitude changes may be accurately localized to the corresponding ECG component, and these changes were rare at rest.
UR - https://www.scopus.com/pages/publications/77952737939
M3 - Conference contribution
AN - SCOPUS:77952737939
SN - 9781424472819
T3 - Computers in Cardiology
SP - 837
EP - 840
BT - Computers in Cardiology 2009, CinC 2009
T2 - 36th Annual Conference of Computers in Cardiology, CinC 2009
Y2 - 13 September 2009 through 16 September 2009
ER -