In this video, we review the normal limits of each of the 5 major components of the ECG beat. Those include the P wave, PR Interval, QRS complex, T wave, and QT interval. For more great content, check out our website EMTprep.com. This video is specifically provided by EMTprep to assist students in preparing for the NREMT exam and related skills sheets and for no other purpose. NREMT study aids and resources provided by EMTprep are not intended to provide training for life-saving techniques, emergency response training, or any other type of medical training.