right atrial enlargement (RAE)
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Introduction
Electrocardiographic (ECG) criteria:
- biphasic p wave in precordial leads
- p wave axis > 70 degrees
- p wave > 3 mm in ECG lead II, ECG lead III & ECG lead aVF
- small QRS voltage in ECG lead V1
- p wave > 1.5 mm in ECG lead V2