Ectopic atrial rhythm • The atrial rate is less than 100 bpm. • PR interval within the normal range. • Easily recognized if compared with the P wave during sinus rhythm. • P wave morphology varies depending on location. • Inverted P waves in inferior leads if the ectopic atrial pacemaker is in the lower atrium and maybe mistaken as AV junctional rhythm. • Customary to call AV junctional rhythm if the PRI is < 0.12 seconds. #Ectopic #atrial #rhythm #cardiology #diagnosis #ekg #ecg #electrocardiogram
