Table 1. Prototype Modified Early Warning Scoring System constructed from the literature.

	3	2	1	0	1	2	3
Respiratory rate/min		9 or less		9–14	15–20	21–29	30 or more
SaO2	<85	85–89	90–92	93+
Heart rate/min		40 or less	41–50	51–100	101–110	111–129	130 or more
BP systolic	70 or less	71–80	81–100	101–199		200 or more
Temperature oC		35 or less		35–38.4		38.5 or more
NEUROLOGICAL STATUS Glasgow Coma Scale (GCS)				15	14 Change in mentation	GCS 13–9	GCS ≤8 or unresponsive
OR AVPU				Alert	Reacting to voice	Reacting to pain	Unresponsive
Urine mls/kg/hr	0.5 ml/kg/1 hr or less		1 ml/kg/1 hr or less	If normally anuric score 0	3 ml/kg/1 hr or more

Aggregated score = GCS 15 = A; GCS 14 = V; GCS 13–9 = P; GCS ≤8 = U.

Interpretation: Aggregated MEWS: 3 = critical score.

(Adapted from Subbe, Kruger et al., 2001 [15]; Morrice and Simpson, 2007 [25], Paterson, MacLeod et al., 2006 [12]).