The Clinical Study Of P_etCO₂ Monitoring Among Elderly Patients With General Anesthesia After Extubation In Postanesthesia Care Unit

Objective:This study aimsto evaluate the clinical effect of PetCO2 monitoring used for elderly patients with general anesthesia after extubation in postanesthesia care unit(PACU).Methods:199 elderly patients,ASA ? to ?,aged 60?89 years,undergoing general anesthesia for elective laparoscopic radical operation in the First Hospital of Ningbo City from October 2015 to June 2016 were selected.All patients after operation were sent to PACU with endotracheal tube,and after being fully conscious,were removed tube and given supplemental oxygen.We randomizedto divide patients into control group(n=102)receiving SpO2 monitoring alone and experiment group(n=97)receiving SpO2 monitoring and additional PetCO2 monitoring.PetCO2 detector was fixed around the nose of patients.The number of patients suffering from apnea or respiratory depression and oxygen desaturation were recorded.Hypoxia(SpO2<90%)and severe hypoxia(SpO2?85%)after extubation were also recorded.Blood gas analysis at the time of 10 min and 30 min after extubation was performed.And record the number of patients of delay leaving Postanesthesia care unit.Results:In experiment group,the rate of apnea or respiratory depression was significantly higher(53vs6,p<0.01),while,the occurrence of oxygen desaturation was significantly lower(31vs55s,p<0.01)compared to control group.Hypoxia(SpO2<90%)and severe hypoxia(SpO2<85%)was also significantly lower(all p<0.05)compared to control group.Blood gas analysis tested at the time of 10 min after extubation showed experiment group had significant lower PaCO2(p<0.01)and significant higher PaO2(p<0.01)than control group.PaCO2 tested at the time of 30 min was significantly lower(p<0.05)than that in control group,whereas PaO2 had no significant difference between two groups.In experiment group,the number of patients of delay leaving Postanesthesia care unit recorded was significantly lower compared to the control group(12 vs 25,p<0.05).Conclusion:PetCO2 monitoring used for elderly patients with general anesthesia after extubation in PACU is more accurate inearly detecting respiratory depression and apneathan conventional SpO2 monitoring,which subsequently reduces the incidence of hypoxemia and hypercarbia,and further improves the recovery quality of patients.