Left atrial enlargement

ECG Findings

LAE

• Biphasic p-wave in V1 with wide, deep (> 1mm) terminal component
• Left atrial hyper-terminal component is larger than .04 sec

Differential Diagnosis

• Mitral stenosis

Cardiac Hypertrophy and Enlargement

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

See Also

• ECG (Basics)

References

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