[Prognostic Factors of Central Venous Catheter-related Bloodstream Infections]

Objective To explore the prognostic factors of central venous catheter-related bloodstream infection(CR-BSI)and provide reference for clinical practice. Methods The clinical data of 346 CR-BSI patients from February 2014 to July 2019 were retrospectively reviewed,and the prognostic factors were analyzed. Results Of the 346 CR-BSI patients,62 died,yielding a case-fatality rate of 17.92%.Univariate analysis showed that 18 factors including age(t=2.838,P=0.006),history of diabetes(χ²=5.966,P=0.015),time to withdrawing the tube after infection(t=5.026,P=0.000),ICU stay(χ²=6.885),P=0.009),catheter placement(χ²=5.468,P=0.019),use of glucocorticoids(χ²=4.731,P=0.030),Acute Physiology and Chronic Health Score Ⅱ(APACHE Ⅱ)after CR-BSI(t=3.556,P=0.000),methicillin-resistant Staphylococcus aureus(MRSA)infection(χ²=10.209,P=0.001),multidrug-resistant Pseudomonas aeruginosa(MDR-PA)infection(χ²=22.668,P=0.000),carbapenem-resistant Klebsiella pneumonia(CRKP)infection(χ²=16.758,P=0.000),infection with extended-spectrum β-lactamase-producing enterobacteriaceae(χ²=7.784,P=0.005),fungal infection(χ²=6.576,P=0.010),use of antibacterial drugs before infection(χ²=5.315,P=0.021),combined use of antibacterial drugs before infection(χ²=4.260,P=0.039),time to start using antibacterial drugs(t=2.805,P=0.006),time to start using antibacterial drugs according to the results of susceptibility test(t=2.877,P=0.005),serum albumin concentration(t=-2.976,P=0.003),blood sugar(t=2.632,P=0.010)were associated with CR-BSI death.Multivariate logistic analysis showed that 6 factors including hyperglycemia(OR=5.047,95% CI=1.805-14.114,P=0.002),MRSA infection(OR=18.278,95% CI=3.732-89.527,P=0.000),MDR-PA infection(OR=42.380,95% CI=9.477-189.528,P =0.000),CRKP infection(OR=72.834,95% CI=16.061-330.286,P=0.000),increased APACHE Ⅱ score after CR-BSI(OR=6.615,95% CI=2.625-16.667, P=0.000),time from infection to extubation(OR=4.071,95% CI=1.743-9.508, P=0.001),and time from infection to use of antibiotics according to drug sensitivity test(OR=5.047,95% CI=1.805-14.114,P=0.001)were independent risk factors for CR-BSI death.Serum albumin concentration(OR=0.365,95% CI=0.136-0.978,P=0.045)was an independent protective factor for CR-BSI death. Conclusions Hyperglycemia,hypoproteinemia,critical illness,and multidrug-resistant bacterial infection are the risk factors for CR-BSI death.Early extubation,early bacterial culture,and early drug sensitivity test may help to reduce the mortality of CR-BSI.