5Clinical and laboratory standards institute performance standards for susceptibility testing , sixteenth informational supplement [ S]. CLSI, 2005 : 32 - 43.
6Gunseren F, Mamikoglu L, Ozturk S, et al. A surveillance study of antimicrobial resistance of gram-negative bacteria isolated from intensive care units in eight hospitals in Turkey [ J ]. J Antimicrob Chemother, 1999, 43 : 373 - 378.
7Bergogne-Berezin E. Guideline on antimicrobial chemotherapy for prevention and treatment of infections in the ICU [J ]. J Chemother, 2001,1 ( 1 ):134-149.
8National Committee for Clinical Laboratory Standards. Performance Standards for Antimicrobial Disk Susceptibility Tests: Approved Standard-Eighth Edition M2-A8 [S]. Wayne, Pennsylvania, National Committee for Clinical Laboratory Standards, 2003 : 1-70.
9Widmer A F. Infection control and prevention strategies in the ICU [J]. Int Care Med,1994,20(Suppl 4):S7-S11.
10Waterer G W, Wunderink R G, Increasing threat of Gram-negative bacteria [J]. Crit Carc Med, 2001,29 (4) Suppl : N75-N78.