TY - GEN
T1 - Optimal lead configuration in the detection and subtraction of QRS and T wave templates in atrial fibrillation
AU - Waktare, J E P
AU - Hnatkova, K
AU - Meurling, Carl
AU - Nagayoshi, H
AU - Janota, T
AU - Camm, A H
AU - Malik, M
PY - 1998
Y1 - 1998
N2 - An in-house written software package was used to generate templates of QRS complexes and T waves using self-similarity techniques, and leave a residual signal representing only atrial activity. The templating performance differences between individual ECG leads were tested. The mean number of templates in each of the 3 ECG leads was 8±4, 2±1, 7±5 for the QRS complexes, and 11±5, 11±8, 10±5 for the T waves. Lead 2 generated less QRS templates than 2 other leads, left less unmatched QRS complexes and T waves (all p<0.005). The average correlation coefficients between templates were 0.69±0.27, 0.21±0.36, and 0.63±0.27 respectively for QRS complexes, and 0.33±0.24, 0.46±0.31, and 0.50±0.24 respectively for T wave in leads 1, 2, and 3. These data suggest that the QRS subtraction process performed well. Lead 2 (a bipolar V5) performed best, but optimal subtraction may require more templates, and hence auto-tuning by the algorithm to the signal encountered.
AB - An in-house written software package was used to generate templates of QRS complexes and T waves using self-similarity techniques, and leave a residual signal representing only atrial activity. The templating performance differences between individual ECG leads were tested. The mean number of templates in each of the 3 ECG leads was 8±4, 2±1, 7±5 for the QRS complexes, and 11±5, 11±8, 10±5 for the T waves. Lead 2 generated less QRS templates than 2 other leads, left less unmatched QRS complexes and T waves (all p<0.005). The average correlation coefficients between templates were 0.69±0.27, 0.21±0.36, and 0.63±0.27 respectively for QRS complexes, and 0.33±0.24, 0.46±0.31, and 0.50±0.24 respectively for T wave in leads 1, 2, and 3. These data suggest that the QRS subtraction process performed well. Lead 2 (a bipolar V5) performed best, but optimal subtraction may require more templates, and hence auto-tuning by the algorithm to the signal encountered.
U2 - 10.1109/CIC.1998.731952
DO - 10.1109/CIC.1998.731952
M3 - Paper in conference proceeding
SN - 0-7803-5200-9
VL - 25
SP - 629
EP - 632
BT - Computers in Cardiology
PB - IEEE - Institute of Electrical and Electronics Engineers Inc.
T2 - Computers in Cardiology 1998. Annual conference of computers in cardiology
Y2 - 13 September 1998 through 16 September 1998
ER -