title: [High-resolution electrocardiography in 102 young healthy subjects].
abstract: BACKGROUND
  The aim of this study was to evaluate the normal values of the most common indexes used in the analysis of ventricular late potential in 102 young male subjects.
  
  
  METHODS
  The recordings were performed by means of a Marquette electronics Hi-Resolution ECG Mac 15, with filters at 25-250 Hz, 40-250 Hz and 80-250 Hz. The parameters obtained were: filtered QRS duration (QRSD), high-frequency low-amplitude signals duration (HFLA), and the root mean square of the signal expressed in the terminal portion of QRS (RMS). The body surface was also evaluated.
  
  
  RESULTS
  QRSD (121.23 ms-113.9 ms-99.9 ms); RMS (105 uV-42.77 uV-34.3 uV); HFLA (17.5 ms-29.3 ms-29.3 ms). The comparison between our results and those proposed by other authors for normal subjects showed different results, particularly concerning the filtered QRS duration. We suppose that these discrepancies may be due to the different instrumentations used and to the different age and sex of the study population.
  
  
  CONCLUSIONS
  From these results we confirm that a normal range for each index must be done for homogeneous groups of subjects for age and sex, in healthy subjects as well as for different heart disease.
authors.affiliation: Ospedale Militare di Padova.
authors.forename: C
authors.initials: C
authors.lastname: Perrone
authors.forename: A F
authors.initials: AF
authors.lastname: Folino
authors.forename: M
authors.initials: M
authors.lastname: Manca
authors.forename: F G
authors.initials: FG
authors.lastname: Buja
authors.forename: A
authors.initials: A
authors.lastname: Nava
mesh_terms: D000293:Adolescent; D000328:Adult; D004562:Electrocardiography / Q000295:instrumentation / Q000379:methods* / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D012016:Reference Values; D013997:Time Factors; D016276:Ventricular Function
vernacular_title: Elettrocardiografia ad alta risoluzione in 102 giovani soggetti sani.