TABLE 2.

Rate of correct electrocardiogram (ECG) identification according to abnormality

ECG pathology	Identified as abnormal	Identified specific abnormality
Rhythm disturbance
Sinus bradycardia*	95	82
Sinus tachycardia†	77	58
Complete heart block	98	67
Ventricular tachycardia	100	81
Supraventricular tachycardia	96	76
Abnormal ECG intervals
Pre-excitation	98	25
Long QT syndrome	85	63
First-degree atrioventricular block	90	58
Chamber hypertrophy or enlargement
Right atrial enlargement	76	48
Left atrial enlargement	61	39
Right ventricular hypertrophy	75	43
Left ventricular hypertrophy	64	33
Biventricular hypertrophy	93	37
Abnormal axis
Left axis deviation	48	21
Right axis deviation	39	28

Data presented as %.

^*ECG provided was from an eight-year-old with a heart rate of 44 beats/min;

^†ECG provided was from a 10-month-old with a heart rate of 194 beats/min