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Document Details :

Title: Standard 12-lead electrocardiogram in healthy young adults in South-Western Nigeria
Author(s): O. Ogunlade , O.E. Ukponmwan , A.O. Ayoka , A.O. Akintomide , O.B. Ogunlade
Journal: Acta Cardiologica
Volume: 67    Issue: 6   Date: 2012   
Pages: 665-673
DOI: 10.2143/AC.67.6.2184669

Abstract :
Objective: This study aimed to determine the mean values of electrocardiographic parameters, and to describe the pattern of electrocardiograms in young adults.
Methods and 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°, 49 ± 14°, 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.
Conclusion: This study defined baseline values for electrocardiographic variables in healthy young adults. Early repolarization is a common ECG feature in young adults.