Abstract
Summary Maximum vectors, half-area vectors, and width of QRS loops in frontal, sagittal and horizontal planes (Frank System) of one hundred healthy subjects were independently measured by two observers. Overall correlations between measurements by the two observers were high. There was a significant correlation between the half-area QRS vector and the maximum QRS vector. The standard deviation of the differences in measurements between the two observers was relatively small for the maximum QRS vector, but large for the magnitude and orientation of the half-area vector and for the width of the QRS loop. It is concluded that reliability of measurement of the half-area vector and QRS loop width is so poor that their diagnostic value is limited, but that for the maximum QRS vector is acceptable.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
