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

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

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

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.

ISSN: 1532-429X