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Table 3 The effect of introducing an SOP * for pre-hospital controlled ventilation on the use of automatic ventilators in patients with ROSC ** after PHCA ***

From: Standard operating procedure changed pre-hospital critical care anaesthesiologists’ behaviour: a quality control study

Ventilator used Before SOP (CI) After SOP (CI) Total
Yes 42 64 106
No 67 29 96
Total 109 93 202
Prevalence 0.39 (0.29-0.48) 0.69 (0.58-0.78) 0.52
  1. *Standard operating procedure.
  2. **Return of spontaneous circulation.
  3. ***Pre-hospital cardiac arrest.