Effects Of Body Surface Heating On Blood Lactic Acid And Adverse Reactions In Craniocerebral Surgery

Objective: To explore whether intraoperative body surface heating can improve peripheral tissue oxygenation,reduce lactic acid value in craniocerebral surgery,reduce the awakening time of general anesthesia,reduce the incidence of shivering in patients during recovery,and provide basis for anesthesia management in neurosurgery.Methods: A total of 40 patients who underwent elective craniotomy in our hospital from September 2018 to December 2019 were selected,aged 18 to65 years,American Association of anesthesiologists ASA grade ?-?,18.5< BMI < 27.5.The patients were randomly divided into two groups: group C(n = 20)as the control group,group T(n = 20)as the heating group,and group C(n = 20)as the control group,and group T(n = 20)as the heating group,the patients were randomly divided into two groups.The age,height,weight,operation time,intraoperative infusion volume,urine volume and bleeding volume of the two groups were recorded.The sampling time of the two groups was recorded: after admission(T1),after anesthesia(T2),after craniotomy(T3),after operation(T4)and before leaving the recovery room(T5).Arterial blood lactic acid,partial pressure of blood oxygen,hemoglobin and blood glucose were measured at five time points.Nasopharyngeal temperature was recorded at T1~T4 time point,the recovery time and shivering occurrence of the two groups were recorded,and the PACU monitoring time and discharge time of the two groups after anesthesia were recorded.Results: the nasopharyngeal temperature in group T was significantly higher than that in group C at T2~T4.The lactate value in group T at T3,T4 and T5 was lower than that in group C at T3,T4 and T5,but there was no significant difference in T1 and T2(p > 0.05).There was no significant difference in oxygen partial pressure(T1-T4)between the two groups at each time point,but T5 was significantly higher than that in group C(p < 0.05).The time of awakening,the time of PACU monitoring and the incidence of shivering in group T were less than those in group C(p < 0.05).Conclusion:Intraoperative warming can maintain the stability of patients' body temperature,which can increase the peripheral circulation oxygenation,reduce the lactate value during craniotomy,reduce the awakening time and PACU monitoring time,increase the partial pressure of oxygen during awakening period,and reduce the incidence of shivering during recovery period,which is beneficial to postoperative recovery.