Ventricular late potentials. Part I. Techniques, detection, interpretation.
The first part of this review on the ventricular late potentials (VLP) presents the actual methods of diagnosis by: 1. Analysis in the time domain (ATD), currently used in most of the studies on the VLP. 2. Analysis in the frequency domain (AFD), in course of study, in which the author has a personal experience and has drawn criteria for the VLP diagnosis. 3. Beat-by-beat analysis, also in a stage of study. Irrespective of the analysis type, the criteria of positivity for VLP presence and the techniques of recording are analysed and commented according to the author's own experience. The interpretation of these techniques and their application in clinical practice shall make the object of the second part of this review.
Guţiu
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Clinic of Internal Medicine, Griviţa Hospital, Bucharest.
D004562:Electrocardiography / Q000295:instrumentation / Q000379:methods*; D005583:Fourier Analysis; D006321:Heart / Q000502:physiology*; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008564:Membrane Potentials / Q000502:physiology; D013997:Time Factors; D016276:Ventricular Function