title: [Reproducibility of the signal-averaged, high-pass filtered electrocardiogram].
abstract: In order to test the reproducibility of the signal-averaged electrocardiogram (SAECG) using Simson's method (high-pass filter cutoff frequency 25 Hz, orthogonal leads, recording of 133 s per lead), 121 patients were examined. In all patients, two signal-averaged ECGs were performed on the first day of the study immediately after each other, using identical electrode position. In a subgroup of 47 patients, the same procedure was repeated 3 days later. There was no difference between the mean values of conventionally calculated averaging parameters (heart rate, QRS-duration, root-mean-square voltage in the terminal 40 ms of the highly amplified and filtered QRS-complex [V40], the low amplitude signal duration under 40 microV in the terminal portion of the QRS-complex [LAS], total root-mean-square voltage of the QRS-complex), both with regard to immediate and short-term reproducibility. Thus, conventionally calculated averaging parameters are well reproducible.
authors: Medizinische Klinik und Poliklinik, Innere Medizin C (Kardiologie, Angiologie), Westfälische Wilhelms-Universität Münster.
authors: T
authors: T
authors: Seifert
authors: U
authors: U
authors: Karbenn
authors: M
authors: M
authors: Borggrefe
authors: G
authors: G
authors: Breithardt
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002311:Cardiomyopathy, Dilated / Q000175:diagnosis / Q000503:physiopathology; D002312:Cardiomyopathy, Hypertrophic / Q000175:diagnosis / Q000503:physiopathology; D003327:Coronary Disease / Q000175:diagnosis / Q000503:physiopathology; D004562:Electrocardiography / Q000295:instrumentation*; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology; D006339:Heart Rate / Q000502:physiology; D006349:Heart Valve Diseases / Q000175:diagnosis / Q000503:physiopathology; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D017180:Tachycardia, Ventricular / Q000175:diagnosis / Q000503:physiopathology*
vernacular_title: Reproduzierbarkeit des signalgemittelten, hochverstärkten Elektrokardiogramms.