title: Standard 12-lead electrocardiogram in healthy young adults in South-Western Nigeria.
abstract: OBJECTIVE
  This study aimed to determine the mean values of electrocardiographic parameters, and to describe the pattern of electrocardiograms in young adults.
  
  
  RESULTS
  353 healthy young adults were evaluated by medical history, physical examination, and standard 12-lead electrocardiogram. The mean heart rate, QRS duration, PR interval, QT interval, corrected QT interval (QTc),T wave axis, P wave duration and amplitude were: 74 +/- 9 beats per min, 0.09 +/- 0.01s, 0.15 +/- 0.02 s, 0.36 +/- 0.02 s, 0.40 +/- 0.02 s, 54 +/- 20 degrees, 49 +/- 14 degrees, 0.09 +/- 0.01 s, 1.28 +/- 0.41 mm, respectively. The dominant electrocardiographic peculiarity among the participants was early repolarization which was characterized by male preponderance.
  
  
  CONCLUSIONS
  This study defined baseline values for electrocardiographic variables in healthy young adults. Early repolarization is a common ECG feature in young adults.
authors: Department of Physiological Sciences, Obafemi Awolowo University, Ile-Ife, Nigeria. oogunlade@oauife.edu.ng
authors: Oluwadare
authors: O
authors: Ogunlade
authors: Otas E
authors: OE
authors: Ukponmwan
authors: Abiodun O
authors: AO
authors: Ayoka
authors: Anthony O
authors: AO
authors: Akintomide
authors: Oluwasayo B
authors: OB
authors: Ogunlade
mesh_terms: D000328:Adult; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000502:physiology*; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D009549:Nigeria; D012016:Reference Values; D015203:Reproducibility of Results; D055815:Young Adult