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1. Hoseini SS; Moeeny A; Shoar S; Shoar N; Naderan M; Gharibzadeh SH; Dehpour AR
Designing Nomogram for Determining the Heart's QRS Axis
QRS Complex
Journal of Clinical and Basic Cardiology 2011; 14 (1-4): 12-15
The drawing method for determination of the heart axis using the QRS complex. (a) Plot the net deflection of QRS complex (mean QRS) for both leads I and aVF along each lead; (b) Run perpendicular lines from each of the plotted points; (c) Z point represents the apex of the mean QRS axis; (d) Draw a vector between O point and Z point. The angle between lead I and OZ vector is the angle of the heart’s electrical axis.

Keywords: QRS complex, scheme

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