FIGURE 2
FROM:
Electrocardiographic assessment of left ventricular hypertrophy with time–voltage QRS and QRST-wave areas
L Oikarinen, M Karvonen, M Viitasalo, P Takala, M Kaartinen, J Rossinen, I Tierala, H Hänninen, T Katila, M S Nieminen and L Toivonen
BACK TO ARTICLEFigure 2.
Calculation of QRS, T-wave and QRS-T wave areas in each BSPM lead. QRS area is the sum of absolute values of Q-, R- and S-wave areas. In measurement of the T-wave area, negative deflections were subtracted from the positive ones (a). If the main QRS deflection and the T-wave were discordant, the T-wave area was multiplied by -1 (b). To obtain the QRS-T area, the T-wave area was subtracted from the QRS area. See text for details.
