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Patient
Young woman 23 years of age, asymptomatic, with no prior history and a normal cardiac ultrasound;
Trace
Normal QRS-complex: QRS duration of 85 ms, normal axis (75°), negative Sokolow index (26), physiological septal activation q waves in V5-V6, lack of pathological R or S waves, physiological progression of the R wave in precordial leads with transition in V3;
Exergue
QRS-duration represents the total duration of ventricular depolarization. The normal QRS-duration is between 60 and 100 ms.
The QRS-complex represents the electrocardiographic representation of the progress of ventricular depolarization.