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Table 2 Accuracy of ECG criteria for Left and Right Atrial Enlargement as Detected by CMR

From: Accuracy of electrocardiographic criteria for atrial enlargement: validation with cardiovascular magnetic resonance

ECG Criteria Sensitivity (%) Specificity (%) PPV (%) NPV (%)
LAE
Any ECG Criteria for LAE 90 21 31 84
P > 0.11s 84 35 34 85
P mitrale 8 99 86 74
P axis < 30° 8 90 23 71
NPTF-V1 > 0.04s·mm 37 88 47 76
PPTF-aVL > 0.5 mm 44 60 30 73
RAE
Any ECG Criteria for RAE 17 96 33 91
Inferior P waves > 2.5 mm 7 100 67 90
Positive P wave in V1 > 1.5 mm 10 96 25 90
  1. CMR: Cardiovascular magnetic resonance. ECG: Electrocardiography. PPV: Positive predictive value. NPV: Negative predictive value. LAE: Left atrial enlargement. RAE: Right atrial enlargement. P mitrale: Notched P wave with interpeak duration > 0.04s. NPTF-V1 > 0.04s·mm: Area of negative P terminal force in lead V1 > 0.04s·mm. PPTF-aVL: Positive P terminal force in lead aVL. Inferior P waves: P wave in any of the leads II, III, or aVF.