ECG Library BASICS 340 356

Right Atrial Enlargement

Brief description of right atrial enlargement (P pulmonale) including ECG criteria for diagnosis and list of causes - EKG Library LITFL
ECG Library BASICS 340 356

P wave

The P wave on the ECG. The P wave is the first positive deflection on the ECG and represents atrial depolarisation. Duration: < 0.12 ms (<120ms or 3 small squares)