Table 1 Prevalence of Atrial Enlargement by CMR and ECG

CMR Criteria

Volume index ≥ 55 ml/m ²

28%

Volume index ≥ 55 ml/m ²

11%

ECG Criteria

Any ECG criteria for LAE

82%

Any ECG criteria for RAE

5%

P > 0.11s

70%

Inferior P waves > 2.5 mm

1%

P mitrale

3%

Positive P wave in V1 > 1.5 mm

4%

P axis < 30°

9%

NPTF-V1 > 0.04s·mm

16%

PPTF-aVL > 0.5 mm

41%