Table 1. PCIS criteria and scoring system [6].

Items	Threshold		Score
	Less than 1 year old:	Older than 1 year old:
Heart rate (beats/min)	<80 or >180	<60 or >160	4
	80–100 or 160–180	60–80 or 140–160	6
	Other	Other	10
Systolic blood pressure (mmHg)	<55 or >130	<65 or >150	4
	55–65 or 100–130	65–75 or 130–150	6
	Other	other	10
Respiratory rate (breaths/min)	<20 or >70 or obvious irregular breathing pattern	<15 or >60 or obvious irregular breathing pattern	4
	20–25 or 40–70	15–20 or 35–60	6
	Other	Other	10
PaO2 (mmHg)	<50		4
	50–70		6
	Other		10
pH	<7.25 or >7.55		4
	7.25–7.30 or 7.50–7.55		6
	Other		10
Sodium level (mmol/L)	<120 or >160		4
	120–130 or 150–160		6
	Other		10
Potassium level (mmol/L)	<3.0 or >6.5		4
	3.0–3.5 or 5.5–6.5		6
	Other		10
Creatinine (umol/L)	>159		4
	106–159		6
	Other		10
BUN (mmol/L)	>14.3		4
	7.1–14.3		6
	Other		10
Hemoglobin (g/L)	<60		4
	60–90		6
	Other		10
GI system	Bleeding Stress ulcer and ileus		4
	Bleeding stress ulcer		6
	Other		10