The length of hospital stays in BSI patients caused by carbapenem susceptible K pneumoniae Genotypic resistance Length of hospital stay (days) (Mean ± SD (n)) Positive Negative p 3-POS 38.2±21.7 (n=11) 16.4±11.2 (n=26) 0.001 NDM-1 44.8±23.5 (n=5) 19.5±14.5 (n=32) 0.002 In patients caused by carbapenem susceptible K pneumoniae, the length of hospital stay was longer in group with NDM-1 or 3-POS positive than group with NDM-1 or 3-POS negative. The difference was significance with p < 0.05.