Table III.

ECG scoring method (adapted from [14])

ECG findings	Score
Sinus tachycardia (> 100 beats/min)	2
Incomplete right bundle branch block*	2
Complete right bundle branch block**	3
T-wave inversion in leads V1 through V4	4
T-wave inversion in lead V1:
• < 1 mm	0
• 1-2 mm	1
• > 2 mm	2
T-wave inversion in lead V2:
• < 1 mm	1
• 1-2 mm	2
• > 2 mm	3
T-wave inversion in lead V3:
• < 1 mm	1
• 1-2 mm	2
• > 2 mm	3
S wave in lead I+	0
Q wave in lead III++	1
Inverted T wave in lead III	1
S1Q3T3 present	2
Total score	21

^*QRS complex of 0.10-0.11 s, S wave in lead I and terminal R wave in V1 > 1.5 mm

^**QRS > 0.11 s and S wave in lead I and terminal R wave in V1 > 1.5 mm.

⁺First negative deflection after an R wave > 1.5 mm.

^{+ +}First negative deflection after the P wave and before any R wave > 1.5 mm)