Findings include a narrow complex tachycardia, a P wave that occurs after the QRS complex (a short RP interval) and termination with adenosine or carotid massage. See the AVNRT ECG Review for more ...
Ectopic, originating outside of the SA node, and thus, the P wave morphology would be different from the normal sinus P wave morphology. When every other QRS complex is a premature atrial ...