The ECG findings presented as normal in athletes were established by an international consensus panel of ... 6,11–14 A junctional or nodal rhythm occurs when the QRS rate is faster than the resting P ...

If there is a P wave before every QRS complex, and it has a sinus morphology, then normal sinus rhythm, or NSR, is said to be present. A sinus morphology is an upright P wave in lead II and ...

They are ectopic. Meaning they originate outside of the SA node. Thus, the P wave morphology would be different than the normal sinus P wave. They are narrow complexes. Since they come from the ...