what is ra enlargement
Right Atrial Enlargement. AKA: Right Atrial Enlargement (RAE), Right atrial hypertrophy (RAH), right atrial abnormality. Attention! Before reading this page, check out our introduction to the P wave for an explanation of the basics of atrial enlargement. ECG Criteria of Right Atrial Enlargement. Right atrial enlargement produces a peaked P wave (P pulmonale) with amplitude: > 2.5 mm in the inferior leads (II, III and AVF) > 1.5 mm in V1 and V2.