 current statu hypothermia moder hypothermia recommend vari condit todai question light control group patient moment justifi cardiac oper circul interrupt short period gener surgic procedur massiv sudden blood loss anticip neurosurg oper relax brain requir acut hypoxia cardiac arrest therapi acut septicem shock profound hypothermia associ extracorpor circul rest shakier premis major cardiac oper asystol requir neurosurg procedur complet interrupt circul indic great hazard develop inadvert unrecogn hypothermia anesthet patient monitor bodi temperatur featur care patient oper theater recoveri room 