Assessment of the Accuracy of Real-time Continuous Glucose Monitoring and Its Correlated Factors in Critically Ill Patients

Methods From July 2014 to January 2015,22 patients were enrolled.All the subjects underwent RTCGMS(San MediTech) for five days. Capilllary glucose values through self-monitoring of blood glucose(SMBG)were input twice a day for adjustment. Meanwhile, arterial cannula was placed for arterial blood sampling. The value of RTCGMS,SGMB and arterial blood glucose(ABG) at the same time were recorded every 4 hours. Whether use vasoactive agents, glucocorticoids, continuous renal replacement therapy(CRRT),enteral nutrition(EN), parenteral nutrition(PN) or not were also recorded at the same point. The correlation of RTCGMS and SMBG, RTCGMS and ABG were analyzed by correlation analysis. The consistency was analyzed by Clarke error grid. Relative absolute difference(RAD) was used to assess the accuracy of RTCGMS, its correlated factors were also analyzed.