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. 2023 Nov 4;73(6):522–530. doi: 10.1007/s13224-023-01859-4

A. Acute physiology score

Acute physiology score Normal range
Score 4 3 2 1 0 1 2 3 4
Rectal temperature (°C)  ≥ 41 39–40.9 38.5–38.9 36–38.4 34–35.9 32–33.9 30–31.9  ≤ 29.9
Mean blood pressure (mmHg)  ≥ 160 130–159 110–129 70–109 50–69  ≤ 49
Heart rate  ≥ 180 140–179 110–139 70–109 55–69 45–54  ≤ 39
Respiratory rate  ≥ 50 35–49 25–34 12–24 10–11 6–9  ≤ 5
Arterial pH  ≥ 7.7 7.6–7.69 7.5 –7.59 7.33–7.49 7.25–7.32 7.15–7.24  ≤ 7.15
Oxygenation, PaO2  ≥ 500 350–499 200–349  < 200 > 70 61–70 55–60  < 55
Serum sodium (mEq/L)  ≥ 180 160–179 155–159 150–154 130–149 120–129 111–119  ≤ 110
Serum potassium (mEq/L)  ≥ 7 6–6.9 5.5–5.9 3.5–5.4 3–3.4 2.5–2.9  < 2.5
Serum creatinine (mg/dL)  ≥ 3.5 2–3.4 1.5–1.9 0.6–1.4  < 0.6
Haematocrit (%)  ≥ 60 50–59.9 46–49.9 30–45.9 20–29.9  < 20
WBC count (103/ml)  ≥ 40 20–39.9 15–19.9 3–14.9 1–2.9  < 1