I got the ECG report today, but I can't understand it. Experts help me to explain that the heart rate is 74 beats per minute, the P-R interval is 0. 16 seconds, and the QRS time limit is 0.08 seconds Q-T0.39 seconds. This electrocardiogram is normal. The heart rate of a normal person is 60- 100 beats per minute, and this electrocardiogram is 74 times. In the normal range, the normal P-R interval is 0. 12-0.20, yours is 0. 16, so it is normal, and the normal QRS time limit is 0.08-0. 12. So your electrocardiogram is normal.