weight teeth Full term/premature birth No food or drink before surgery

mask ventilation

laryngeal mask

intubation

4-2-1 infusion method Preoperative loss: fasting and water time*4-2-1 Physiological requirements 4-2-1 Surgical loss large, medium and small 6/4/2ml/kg/h

blood transfusion Elective surgery requires Hb>80g/L, neonates>100g/L If red blood cell transfusion is required, 4ml/kg can be increased by 1g/dl.

static suction compound All Intravenous Opioids Effect on Awakening Total inhalation

PCA NSAIDS multi-modal