Biatrial Enlargement

To best understand ECG features of biatrial enlargement, it is recommended that you first review ECG changes seen in left atrial enlargement and right atrial enlargement. Biatrial Enlargement Definition Biatrial enlargement is diagnosed when criteria for both right and left atrial enlargement are present on the same ECG. The diagnosis of biatrial enlargement requires criteria for LAE and RAE to be met in either lead II, lead V1 or a combination of leads ECG Criteria for Biatrial Enlargement The spectrum of P-wave changes in leads II and V1 with right, left, and biatrial enlargement is summarised below: ...