Group 1 (N1): anesthesia with Lidocain 6mg-8 mg/kg Fentanyl combined with 2-3 µ g/kg. The volume of drugs (V) 40 ml (and there are improvements of 20 ml). + Group 2 (N2): anesthesia with Lidocain 6mg-8 mg/kg. V is the 40 ml (there are more improvements to 20 ml).
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