Table 1.

Scoring system of arrhythmia

Arrhythmia scores	Arrhythmia type
0	No arrhythmia
1	Atrial arrhythmia or accidental ventricular premature beat
2	Frequent ventricular premature beat
3	VT (1–2/minute)
4	VT (≥3/minute or VF)

Abbreviations: VF, ventricular fibrillation; VT, ventricular tachycardia.