What is the normal length of a QRS complex?

The normal length of a QRS complex is typically between 0.06 to 0.10 seconds. This range indicates the duration of electrical conduction through the ventricles during ventricular depolarization. A QRS complex longer than 0.10 seconds may suggest a delay in conduction, which could indicate various cardiac conditions such as bundle branch block or ventricular hypertrophy. Monitoring this interval is vital in interpreting an ECG, as it gives insight into the heart's electrical activity and potential abnormalities in cardiac function. Understanding the standard timing of the QRS complex is essential for any monitor technician, as deviations from this normal range can prompt further investigation and management of underlying heart issues.