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Results for “VECTORCARDIOGRAPHY”

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At least 271 records · Page 15Linked to original sources
PubMed1992

12-lead vectorcardiography in ischemic heart disease.

The conventional approach to recording the vectorcardiogram is to use a specially designed set of electrodes that derive 3-orthogonal leads, ideally corrected with respect to lead strength and direction. This has disadvantages in that it entails a separate recording as opposed to the use of the 12-lead ECG that is universally used. On the other hand, recently developed equations allow the vectorcardiogram to be derived from the 12-lead ECG, and although there is not a one-to-one correspondence with the vectorcardiogram derived using a corrected orthogonal lead system, it has been shown that there is a high degree of similarity between the two derivations. This article discusses the advantages of utilizing the "derived 12-lead vectorcardiogram," which is claimed to have information that is complementary to that of the scalar 12-lead ECG display. It is suggested that using the combination of the 12-lead ECG and the vectorcardiogram derived therefrom, provides the optimum approach to ECG interpretation as compared to using either method alone.

Coronary Disease↗
PubMed1981

Respiratory variation in Frank vectorcardiography and echocardiography in children.

Forty pediatric patients underwent echocardiographic and Frank vectorcardiographic studies during normal respiration. The right ventricular minor axis (RVEDD) increased significantly with inspiration (p less than 0.005), while the left ventricular minor axis did not significantly change. The distance from the anterior chest wall to the center of the left ventricle did significantly increase with inspiration (p less than 0.005). Some vectorcardiographic parameters changed with inspiration, also. Both the maximal spatial vector to the left (MSVL) and the X to the left (X-L) significantly decreased with inspiration. Although the average magnitude of these changes was small (10-15%), there was wide variation. Five of twenty-one patients with left ventricular hypertrophy during expiration had a clearly normal Frank VCG during inspiration. It is suggested that phases of respiration should be monitored when evaluating the Frank VCG in pediatric patients.

Adolescent↗