Abstract
1)From theoretical and practical view-point the variant of Grishman method of vectorcardiography by elevating the horizontal electrode to the 5th intercostal space showed excellent findings.
2)Left Ventricular Hypertrophy ; The main QRS loops showed strong shift to the left and posteriorly, and T loop was in discordant with this change. The degree of left ventricular hypertrophy was seen to parallel the degree of enlargement of the QRS-T angle. In the group showing strong evidence of myocardial changes abnormal conduction disturbances were seen in the QRS loop changes.
In the aortic vavular group the QRS loop was seen to be rotating clock-wise or to be the figure 8 type in the horizontal projection.
3)Left Bundle Branch Block ; The initial vector of the QRS loop was in the left posterior direction in contrary to left ventricular hypertrophy. The QRS loop showed clock. wise rotation and marked bunching, and with elevating the electorode the change in QRS form and bunching more marked. The chracteristic findings was that the QRS-T angle showed very little change.
4)W-P-W (Type B); Δ vector pointed to the left, and its spatial position become more clear with elevating electrodes.
5)The enlargement of the QRS-T angle brought about by discordant QRS and T loops holds much interest from the ventricular gradient standpoint. This may be interpreted as an experimental evidence of the idea of the so called primary T-change and secondary T-change.
