Right atrial enlargement

ECG Findings

RAE

• Rarely isolated finding (usually RVH/RAD also)
• P amplitude >2.5mm in II
• Large biphasic p wave in V1
• Right atrial hyper.-initial component is larger in V1 than V6
• p-mitrale-m notched p wave in leads 1 and 2. Greater than .12 seconds.

Differential Diagnosis

Cardiac Hypertrophy and Enlargement

• Right atrial enlargement
• Left atrial enlargement
• Left ventricular hypertrophy
• Right ventricular hypertrophy

See Also

• ECG (Basics)

Source

• Adapted from Niemann, Lampe, Pani, Donaldson, ECGpedia.org
• Journal of Electrocardiology. Vol 43 (2010). 40-42.