Orthogonal Expansion of Epicardial and Body Surface ECG Potentials

Author(s):  
H. Tanaka ◽  
K. Hirayanagi ◽  
T. Furukawa
1995 ◽  
Vol 23 (5) ◽  
pp. 553-561 ◽  
Author(s):  
Boris Gramatikov ◽  
Sun Yi-chun ◽  
Herve Rix ◽  
Pere Caminal ◽  
Nitish V. Thakor

2004 ◽  
Vol 37 ◽  
pp. 47-52 ◽  
Author(s):  
Arne SippensGroenewegen ◽  
Andrea Natale ◽  
Nassir F. Marrouche ◽  
Diana Bash ◽  
Jie Cheng

2010 ◽  
pp. 887-896
Author(s):  
E Kellerová ◽  
V Szathmáry ◽  
G Kozmann ◽  
K Haraszti ◽  
Z Tarjányi

There is virtually no information on spontaneous variability of ECG body surface potential maps (BSPMs) and on dynamics of their reactive changes in healthy subjects. This study evaluated quantitatively the depolarization (QRS) and repolarization (QRST) parameters derived from the respective integral BSPMs, constructed beat-to-beat, from continual body surface ECG records in 9 healthy men resting supine, during head-up tilting and sitting. Spontaneous variability of the BSPMs parameters, both at rest and during postural reactions, was characterized by significant respiratory and low frequency oscillations, more pronounced when related to repolarization. Head-up tilting and sitting-up evoked significant decrease in the QRST-BSPM amplitudes, widening of the angle α and reduction of nondipolarity indexes, compared to the respective supine values. All these changes were gradual, characterized by transition phenomena and prolonged after-effects. Tilting back to horizontal restored the resting supine values. The postural effects on depolarization were individually more variable and in the average showed a minimal QRS-BSPM amplitude increase. Beat-to-beat analysis of a train of ECG BSPMs provided the first evidence of spontaneous, non-random, respiratory and low frequency oscillations of the ventricular repolarization pattern, and the first insight into the dynamics of body posture associated changes in ventricular recovery.


2013 ◽  
Vol 36 (3) ◽  
pp. 309-321 ◽  
Author(s):  
JUN-ICHI OKADA ◽  
TERUYOSHI SASAKI ◽  
TAKUMI WASHIO ◽  
HIROSHI YAMASHITA ◽  
TARO KARIYA ◽  
...  

2006 ◽  
Vol 53 (12) ◽  
pp. 2491-2500 ◽  
Author(s):  
B. Khaddoumi ◽  
H. Rix ◽  
O. Meste ◽  
M. Fereniec ◽  
R. Maniewski

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