About: Vectorcardiography is a research topic. Over the lifetime, 711 publications have been published within this topic receiving 14540 citations. The topic is also known as: cardiovectography.
TL;DR: A news improved system of spatial vectorcardiography that is practical for clinical use that represents an optimum compromise among such factors as soundness of theoretic basis, accuracy, reproducibility, signal-to-noise ratio, and speed of application is described.
Abstract: This paper describes a news improved system of spatial vectorcardiography that is practical for clinical use. It represents an optimum compromise among such factors as soundness of theoretic basis, accuracy, reproducibility, signal-to-noise ratio, and speed of application. Some of its advantages over currently employed systems include a rational physical basis, corrections for torso shape, avoidance of left arm, insensitivity to individual variability of ventricle location, and accuracy comparable to applicability of 3-dimensional torso-model data to the human subject. Detailed description of electrode placement, practical procedures, and useful technics is included.
TL;DR: By COMMITTEE MEMBERS: CHARLES E. KOSSMANN, M.D., CHAIRMAN, DANIEL A. BRODY, MD., GEORGE E. BURCH,M.D, and HUBERT V. PIPBERGER, M,D, of the SUBCOMMITTEE on Instrumentation.
Abstract: By COMMITTEE MEMBERS: CHARLES E. KOSSMANN, M.D., CHAIRMAN, DANIEL A. BRODY, M.D., GEORGE E. BURCH, M.D., HANs H. HECHT, M.D., FRANKLIN D. JOHNSTON, M.D., CALVIN KAY, M.D., EUGENE LEPESCHKIN, M.D., HUBERT V. PIPBERGER, M.D., AND by MEMBERS OF THE SUBCOMMITTEE ON INSTRUMENTATION: * HUBERT V. PIPBERGER, M.D., CHAIRMAN, GERHARD BAULE, PH.D., ALAN S. BERSON, M.S., STANLEY A. BRILLER, M.D., DAVID B. GESELOWITZ, Ph.D., LEO G. HORAN, M.D., AND OTTO H. SCHMITT, Ph.D.
TL;DR: Main emphasis was put on series of instantaneous vectors of the QRS complex, the ST segment, and the T wave, as well as time normalization by dividing QRS, ST, and T into equal parts in time.
Abstract: Corrected orthogonal electrocardiographic records were taken from 510 normal male subjects. Their age ranged from 19 to 84 years. Data processing and analysis were performed by means of a digital computer. Measurements were taken from the three scalar orthogonal leads and from a variety of spatial vectors in a Cartesian reference frame. Main emphasis was put on series of instantaneous vectors of the QRS complex, the ST segment, and the T wave. In order to eliminate inter-individual variability in electrocardiographic wave durations, time normalization was applied by dividing QRS, ST, and T into equal parts in time. Results for instantaneous vectors were also obtained in absolute time at intervals of 0.01 second. In addition, time integrals, polar vectors, and Eigenvectors were determined for P, QRS, and T. Normal ranges were computed for both normally and abnormally distributed results.
TL;DR: The main presentation will limit the main presentation to just four topics, each of which represents one major controversial area of the problem that can be evaluated separately in terms of individual experience; yet, taken together, these four topics include most of the vexing problems of present-day electrocardiography.
Abstract: It is obviously impossible in the limited space available to review historically the many researches that have led to vector electrocardiography, to summarize the numerous theoretical points of view, and to offer a critical evaluation of them, especially if even a tentative answer is to be found to the question: "Is vector cardiography worth while clinically now or will it ever be?" Instead of tackling this impossible assignment, we will limit the main presentation to just four topics. Each of these topics represents one major controversial area of the problem that can be evaluated separately in terms of individual experience; yet, taken together, these four topics include most of the vexing problems of present-day electrocardiography. Beside a few new numbers and theoretical relationships which we have to offer, our contribution to this symposium is primarily that of separating the variables of the problem into packages that are susceptible to individual