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Table 1 Early warning score with physiological parameters and corresponding weighted score and normal range

From: Performance of the efferent limb of a rapid response system: an observational study of medical emergency team calls

Vital sign 3 2 1 0 1 2 3
Respiratory Rate per min <9   9 – 11 12 – 20   21 – 24 >24
Oxygen saturation <92 % 92 – 93 % 94 – 95 % >95 %    
Supplemental oxygen   YES   NO    
Temperature degrees centigrade <35.1   35.1 – 36.0 36.1 – 38.0 38.1 – 39.0 >39  
Systolic blood pressure mmHg <91 91 – 100 101 – 110 111 – 219    >219
Heart rate per min <41   41 – 50 51 – 90 91 – 110 111 – 130 >130
Level of consciousness     A    V, P, U