Open AccessThe Spatial Vectorcardiogram in Left Ventricular Hypertrophy
Author(s) -
Leo G. Horan,
George E. Burgh,
J.A. Abildskov,
J. A. CRONVICH
Publication year - 1954
Publication title -
circulation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 7.795
H-Index - 607
eISSN - 1524-4539
pISSN - 0009-7322
DOI - 10.1161/01.cir.10.5.728
Subject(s) - clockwise , sagittal plane , loop (graph theory) , vectorcardiography , medicine , qrs complex , left ventricular hypertrophy , coronal plane , plane (geometry) , cardiology , anatomy , electrocardiography , geometry , rotation (mathematics) , combinatorics , mathematics , blood pressure
A study of 90 patients with left ventricular hypertrophy revealed a typical configuration of the spatial vectorcardiogram in most of the subjects. Typically the QRS sÊ-loop was smooth, wide and rounded, inscribed in a counterclockwise direction and placed largely to the left and above the isoelectric point in its frontal plane projection. The left sagittal plane projection of the QRS sÊ-loop was long, narrow and directed largely upward and posteriorly. The typical T sÊ-loop was small, smooth, horseshoe-shaped and counterclockwise in inscription in both frontal and left sagittal plane projections. In some instances the QRS sÊ-loop was similar to that of the normal but was always accompanied by an abnormal T sÊ-loop.
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