The Duration of Systole in an Electrocardiogram in Normal Humans and in Patients with Heart Disease*
Year: 2003
Type: article
Abstract: VENTRICULAR ELECTROCARDIOGRAM (QT INTERVAL) IN NORMAL HUMANS AT RESTAll clinicians agree that patients with heart disease may have an uncertain prognosis, with the main reason due to the limited resources to analyze the functionality of the myocardium.Therefore, it is desirable to find abnormalities that are not indirect symptoms of a weakness of the vascular system, but rather, depend more directly on the work of the myocardium.Graphic methods opened a number of new possibilities that resulted in a better insight into the working myocardium.However, not all possible conclusions derived from these graphical methods have been analyzed in a comparable manner.Arrhythmias and the impairment of the propagation of an electrical pulse are of particular interest.Graphic signs that are associated with an abnormality of the myocardium, especially pulsus alternans and inversion of the T-wave in the electrocardiogram, have been intensively studied.Graphic recordings and certain interesting features of the electrocardiogram have not been studied intensely.One area of special interest is the duration of the ventricular electrocardiogram (the duration of electrical systole).A detailed study of the duration of electrical systole is promising because recent progress in the physiology of the heart analyzed primarily the time dependency of the working heart.In addition, several publications have identified specific alterations in the duration of the ventricular electrocardiogram of the heart in different forms of heart disease.For example, Steriop-
Author: L. S. Fridericia
Institutions: University of Rochester Medicine, University of Rochester
Language: English
Subfield: Cardiology and Cardiovascular Medicine
Field: Medicine
Domain: Health Sciences
Open Access status: bronze
OpenAlex ID: W2067884148