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Table 4 Variables on departure and arrival

From: Quality of interhospital transport of critically ill patients: a prospective audit

Variable Departure (mean ± SD) Arrival (mean ± SD) Arrival (min–max) Critical threshold Beyond threshold on departure (%) Beyond threshold during transport (%) Beyond threshold on arrival (%) P
Arterial pH 7.35 ± 0.17 7.36 ± 0.13 6.98–7.57 <7.20 7 - 13 0.18
Oxygen saturation (%) 94.2 ± 7.0 93.9 ± 7.3 68–100 <90 13 20 16 0.58
PCO2 (kPa) 13.5 ± 9.9 18.3 ± 14.7 4.30–71.8 <8 12 - 16 0.45
PCO2 (kPa) 5.6 ± 1.8 5.9 ± 2.3 2.80–12.91 >6.0 35 - 35 1.00
SBP (mmHg) 120.8 ± 22.8 126.9 ± 30 60–210 <90, >180 7, 0 14, 3 11, 3 0.09
DBP (mmHg) 64.4 ± 15.9 68.43 ± 18.4 37–145 <50, >110 14, 1 14, 3 14, 2 1.00
Heart rate (beats/min) 103.5 ± 23.8 103.9 ± 23.3 50–160 <50, >120 0, 30 2, 31 0, 28 0.82
Temperature (°C) 37.7 ± 1.3 37.04 ± 1.3 32.0–40.4 <36.0 8 - 12 0.29
Lactate (mmol/l) 1.9 ± 2.5 2.1 ± 1.9 0.6–13.2 >3.0 10 - 8 1.00
Haemoglobin (mmol/l; g/dl × 1.6) 6.9 ± 1.5 6.6 ± 1.4 3.4–10.0 <5.0 6 - 11 0.06
Glucose (mmol/l) 9.0 ± 5.0 7.9 ± 4.3 3.4–25.5 <4.0, >12.0 15 - 15 1.00
HCO3-(mmol/l) 23.2 ± 6.3 23.9 ± 7.0 5.1–44.0 <20 36 - 28 0.09
  1. *P values were calculated using the McNemar test. -, not measured during transport; DBP, diastolic blood pressure; PCO2, partial carbon dioxide tension; PO2, partial oxygen tension; SBP, systolic blood pressure.