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

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N/A -testing NOT APPLICABLE to organism. GEN -gentamicin, T/S-trimethoprim/sulfamethoxazole, CIP-ciprofloxacin, PCN -penicillin, NAF-nafcillin, ERY-erythromycin, CLIN-clindamycin, DOX-doxycycline, VANC-vancomycin

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

Organism

Total

Isolates

PCN

NAF

ERY

CLIN

CIP

DOX

T/S

VANC

Staphylococcus aureus

509

0

65

44

69

61

92

93

100

MRSA

180

N/A

N/A

12

56

50

94

91

100

MSSA

330

0

100

62

76

70

91

95

100

Staphylococcus epidermidis

159

0

43

9

69

50

84

59

100

Streptococcus pneumoniae

65

See below

N/A

63

65

N/A

64

57

100

 

Streptococcus pneumoniae beta-lactam sensitivities:

-Across all isolates, 68% (44/65 isolates) were PCN susceptible and 65/65 (100%) levofloxacin susceptible.

NOTE: For the treatment of meningitis, pending susceptibilities, VANC empirically should be added to the regimen since failures (due to highly resistant isolates) have been reported with ALL third generation cephalosporins.