UCSF Medical Center Antimicrobial Susceptibility: Gram-negatives Among Inpatients 2014

PrintPrintPDFPDF

N/A-testing NOT APPLICABLE to organism. CZOL-cefazolin, CTRX-ceftriaxone, CTAZ-ceftazidime, CFPM-cefepime, GEN-gentamicin, TOB-tobramycin, T/S-trimethoprim/sulfamethoxazole, CIP-ciprofloxacin, MER-meropenem, P/T-piperacillin-tazobactam

Values are % of strains testing susceptible to listed antibiotic.  Unless indicated, results are for all inpatient locations and culture sites.

Organism Total Isolates CZOL CTRX CTAZ CFPM GEN TOB T/S CIP P/T MER

Acinetobacter baumanii

30  N/A  44  77  87 84 87  77  73 74 84

Citrobacter freundii

54

N/A

69

74

96

91

91

76

80

85

98

Enterobacter aerogenes

35

N/A

N/A

N/A

100

100

100

100

97

80

100

Enterobacter cloacae

88

N/A

N/A

N/A

98

95

97

80

91

85

98

Escherichia coli

1051

63

88

94

97

88

88

67

72

98

100

Urine isolates (for outpatient isolates see below)

881

64

88

94

97

88

88

68

73

98

100

Non-urine isolates

261

59

82

92

95

85

86

61

66

96

100

Klebsiella oxytoca

55

27

89

95

100

100

100

87

98

89

100

Klebsiella pneumoniae

311

79

89

92

98

92

91

79

88

94

100

Proteus mirabilis

129

15

98

100

100

88

91

72

76

100

100

Pseudomonas aeruginosa*

221

N/A

N/A

90

88

N/A

96

N/A

83

84

83

ICU

53

N/A

N/A

79

74

N/A

92

N/A

83

72

75

Non-ICU

179

N/A

N/A

90

89

N/A

96

N/A

80

84

83

Serratia marcescens

48

N/A

100

100

100

96

100

100

100

100

100

 

* Pseudomonas aeruginosa isolates do not include isolates from cystic fibrosis patients

 Escherichia coli outpatient urine isolates: TMP/SMX susceptibility is 70%, ciprofloxacin susceptibility is 78%. Nitrofurantoin susceptibility is 97% and should only be used for lower tract UTIs in patients with CrCl >60 ml/min. Cefazolin susceptibility is 70%.