What is the nadir value associated with a normal QRS complex width?

A normal QRS complex width indicates proper electrical conduction through the ventricles of the heart. The nadir value for a normal QRS is generally considered to be less than 0.10 seconds (or 100 ms), with many sources citing a narrower range for an ideal QRS duration. Specifically, a QRS complex width of less than 0.06 seconds typically aligns with the expectation of rapid conduction through the His-Purkinje system and an absence of delay, which signifies efficient ventricular depolarization.

Selecting a value under 0.06 seconds reflects the expectation that the electrical impulses are traveling through the ventricles effectively without encountering any significant conduction abnormalities. Values within this threshold indicate that the conduction system is functioning properly and that there are no intraventricular conduction delays affecting the QRS duration.