Early predictors of poor outcome after out-of-hospital cardiac arrest

Table 5 Target temperature management risk score points (range −2 to 35)

Risk factor	Categories	Points
Age, years	<40	−1
	40–44	0
	45–49	1
	50–54	2
	55–59	3
	60–64	4
	65–69	5
	70–74	6
	75–79	7
	80–84	8
	≥85	9
CA at home	No	0
CA at home	Yes	2
First monitored rhythm other than VT/VF	No	0
First monitored rhythm other than VT/VF	Yes	4
No flow	0–4	0
	5–9	1
	10–14	2
	≥15	3
Low flow	0–5	0
	6–15	1
	16–30	2
	31–60	3
	>60	4
Treatment with adrenaline	No	0
Treatment with adrenaline	Yes	2
No pupillary or corneal reflex	No	0
No pupillary or corneal reflex	Yes	3
pH	≥7.35	−1
	7.20–7.34	0
	7.05–7.19	1
	6.90–7.04	2
	<6.90	3
GCS motor score 1	No	0
GCS motor score 1	Yes	2
PaCO₂ < 4.5 kPa	No	0
PaCO₂ < 4.5 kPa	Yes	3

Abbreviations: CA Cardiac arrest, GCS Glasgow Coma Scale, PaCO ₂ Partial pressure of carbon dioxide in arterial blood, VT/VF Ventricular tachycardia/ventricular fibrillation
Points assigned to categories of the ten independent risk factors for a poor outcome in the calculation of the Target temperature management risk score. Poor outcome was defined as Cerebral Performance Category 3–5 at 6 months after out-of-hospital cardiac arrest. Total score ranged from −2 to 35. No flow is defined as time from CA to start of cardiopulmonary resuscitation in minutes. Low flow is defined as time from start of cardiopulmonary resuscitation to return of spontaneous circulation in minutes

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