TY - GEN
T1 - QRS loop folding phenomenon in vectorcardiogram of healthy individuals
AU - Sedaghat, Golriz
AU - Kabir, Muammar M.
AU - Tereshchenko, Larisa G.
N1 - Publisher Copyright:
© 2016 CCAL.
PY - 2016/3/1
Y1 - 2016/3/1
N2 - Recently, we developed a novel approach to study the rapid and sudden changes in the direction of ventricular activation called folding phenomenon. In order to better understand this phenomenon, we were interested in studying the variation of the orientation of QRSt for i=1... N where QRSt represents the QRS vector at the ith sample point. In this study, we described the orientation of the QRS vector and the rotation of its frame of reference in details in 81 healthy participants from the Intercity Digital Electrocardiogram Alliance (IDEAL) study using unit quaternions and Euler angles. We observed that the variance of the elevation of rotation axis u was significantly higher in men compared to women (1340±421 vs. 1063±381, P=0.003, respectively). Additionally, there was a significant negative correlation between the variance of the azimuth of u and height (CC=-0.26, P=0.019) while the elevation of u and height were significantly positively correlated (CC=0.24, P=0.034). Moreover, the elevation of u had a positive significant correlation with weight and body surface area (CC=0.22, P=0.045 and CC=0.26, P=0.020 respectively).
AB - Recently, we developed a novel approach to study the rapid and sudden changes in the direction of ventricular activation called folding phenomenon. In order to better understand this phenomenon, we were interested in studying the variation of the orientation of QRSt for i=1... N where QRSt represents the QRS vector at the ith sample point. In this study, we described the orientation of the QRS vector and the rotation of its frame of reference in details in 81 healthy participants from the Intercity Digital Electrocardiogram Alliance (IDEAL) study using unit quaternions and Euler angles. We observed that the variance of the elevation of rotation axis u was significantly higher in men compared to women (1340±421 vs. 1063±381, P=0.003, respectively). Additionally, there was a significant negative correlation between the variance of the azimuth of u and height (CC=-0.26, P=0.019) while the elevation of u and height were significantly positively correlated (CC=0.24, P=0.034). Moreover, the elevation of u had a positive significant correlation with weight and body surface area (CC=0.22, P=0.045 and CC=0.26, P=0.020 respectively).
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U2 - 10.22489/cinc.2016.189-488
DO - 10.22489/cinc.2016.189-488
M3 - Conference contribution
AN - SCOPUS:85016132781
T3 - Computing in Cardiology
SP - 645
EP - 648
BT - Computing in Cardiology Conference, CinC 2016
A2 - Murray, Alan
PB - IEEE Computer Society
T2 - 43rd Computing in Cardiology Conference, CinC 2016
Y2 - 11 September 2016 through 14 September 2016
ER -