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Table 4 Variables at departure, arrival and 24 hours after arrival in the referral ICU

From: Quality of interhospital transport of the critically ill: impact of a Mobile Intensive Care Unit with a specialized retrieval team

       Beyond threshold   
Variable Departure Arrival 24 h
after arrival
T* Threshold Departure- Arrival-at (%) 24 h P **
Heart rate 98.4 ± 19.2 96.5 ± 19.5 89.4 ± 20.3 0.36 < 50 and >120 0 to 8 0 to 7 0 to 4 1.00
Syst. BP 121.2 ± 19.8 131.1 ± 27.2 121.2 ± 19.4 0.00 < 90 and >180 1 to 1 3 to 7 0 to 0 0.18
Diast. BP 61.6 ± 13.6 64.8 ± 14.1 57.8 ± 12.6 0.07 < 50 and >110 12 to 1 12 to 0 15 to 0 1.00
MAP 80.8 ± 14.0 87.0 ± 16.6 78.9 ± 13.1 0.00 < 60 3 4 4 1.00
Temp (°C) 37.7 ± 1.4 37.6 ± 1.2 37.5 ± 1.1 0.26 < 36 and >39.5 5 to 11 5 to 8 4 to 4 1.00
Resp. Rate 19.3 ± 6.3 20.6 ± 6.6 19.9 ± 6.6 0.12 > 30 4 10 8 0.29
Saturation % 96.0 ± 6.7 95.8 ± 5.7 96.0 ± 6.4 0.76 < 90 5 10 3 0.45
Art. pH 7.38 ± 0.10 7.38 ± 0.11 7.37 ± 0.09 0.90 < 7.30 16 18 15 1.00
PaO2 (kPa) 12.2 ± 3.6 14.0 ± 6.7 12.2 ± 3.4 0.76 < 8 4 8 4 0.25
PaCO2 (kPa) 5.4 ± 1.3 5.3 ± 1.3 5.6 ± 1.3 0.76 > 6 20 23 28 0.77
HCO3- 23.6 ± 5.6 23.4 ± 5.5 23.7 ± 5.3 0.99 < 20 18 22 19 0.69
Haemoglobin 6.6 ± 1.3 6.3 ± 1.1 6.1 ± 1.0 0.04 < 4.4 0 1 3 1.00
Lactate 2.6 ± 3.0 1.9 ± 2.8 1.6 ± 1.2 0.15 > 3 11 8 5 0.45
Glucose 7.0 ± 1.5 7.6 ± 2.1 7.4 ± 1.9 0.03 < 4 and >12 1 to 0 1 to 4 1 to 1 0.38
  1. * T-values were calculated using Paired Samples T-test (between departure and arrival).
  2. ** P- values were calculated using the McNemar test (between departure and arrival).
  3. Heart rate and respiratory rate is beats per minute respectively breaths per minute. Systolic, diastolic blood pressure (BP) and MAP (mean arterial pressure) are expressed as mmHg. Laboratory values (bicarbonate, haemoglobin, lactate and glucose) are expressed as mmol/L.
  4. PaO2, partial arterial oxygen tension; PaCO2, Partial arterial carbon dioxide tension.