what is standard range for ekg normal
A normal ECG is illustrated above. Note that the heart is beating in a regular sinus rhythm between 60 - 100 beats per minute (specifically 82 bpm).All the important intervals on this recording are within normal ranges. 1. P wave: 1  upright in leads I, aVF and V3 - V6.. QRS complex: 1  Duration less than or equal to 0.12 seconds, amplitude greater than 0.5 mV in at least one standard lead, and greater than 1.0 mV in at least one precordial lead. 2  Upper limit of normal amplitude is 2.5 - 3.0 mV.