Category Archives: Vectorcardiogram

Comparison of the Derived Vectorcardiogram in Apparently Healthy Whites and Chinese: Discussion

For whites, the magnitude of the initial 30-ms vector increased significantly with advancing age in men only in the frontal plane (p=0.009), while in the right sagittal plane, the vector magnitude was observed to decrease with advancing age in both … Continue reading

Comparison of the Derived Vectorcardiogram in Apparently Healthy Whites and Chinese: Magnitude of Initial 20-ms Vector in Frontal, Horizontal, and Right Sagittal Planes

The magnitude of the projection of the maximal T vector onto all planes decreases significantly with advancing age for both sexes in whites (p<0.001) and Chinese (p<0.001) (Figs 2 and 3). The magnitude in men is significantly greater than that … Continue reading

Comparison of the Derived Vectorcardiogram in Apparently Healthy Whites and Chinese: Results

Both in whites and Chinese, the dominant direction of inscription in the frontal plane, horizontal plane, and right sagittal plane is clockwise, counterclockwise, and counterclockwise separately (Tables 2 and 3). In Chinese, there was no clockwise or figure of 8 … Continue reading

Comparison of the Derived Vectorcardiogram in Apparently Healthy Whites and Chinese: Methods

Subsequently the casettes were sent to Glasgow Royal Infirmary for analysis by software that incorporated the inverse Dower equations (vide infra) for the derivation of the three orthogonal XYZ leads from the 12 conventional electrocardiographic leads, so that the derived … Continue reading

Comparison of the Derived Vectorcardiogram in Apparently Healthy Whites and Chinese: Materials

A total of 1,555 whites (884 men and 671 women), aged between 16 and 64 years, were recruited between March 1981 and May 1991 by the department of Medical Cardiology in Glasgow Royal Infirmary for this study from apparently healthy … Continue reading

Comparison of the Derived Vectorcardiogram in Apparently Healthy Whites and Chinese

Thе derived vectorcardiogram (dVCG) is a vectorcardiogram (VCG) obtained from three orthogonal leads X, Y, Z, synthesized from a linear combination of the conventional 12-lead electrocardiographic leads using the “inverse” Dower matrix (vide infra). The advantages of the application of … Continue reading