Ectopic atrial rhythm

Associate Editor-In-Chief:

Electrocardiographic Findings:

 * 1) There is a different P wave morphology than in Normal Sinus Rhythm (NSR)
 * 2) The sinus rate is < 100 beats per minute
 * 3) The rhythm is called an accelerated atrial rhythm when the rate is faster than the patient's own NSR but < 100 beats per minute.

Additional resources

 * ECGpedia: Course for interpretation of ECG
 * The whole ECG - A basic ECG primer
 * 12-lead ECG library
 * Simulation tool to demonstrate and study the relation between the electric activity of the heart and the ECG
 * ECG information from Children's Hospital Heart Center, Seattle
 * ECG Challenge from the ACC D2B Initiative
 * National Heart, Lung, and Blood Institute, Diseases and Conditions Index
 * A history of electrocardiography
 * EKG Interpretations in infants and children