BioMed Research International / 2017 / Article / Tab 3

Research Article

Isolation, Identification, and Antimicrobial Susceptibility of Bacteria Associated with Waterpipe Contaminants in Selected Area of Saudi Arabia

Table 3

Antibiotics susceptibility against selected Gram-negative bacteria.

Antimicrobial agents Bacteria
Escherichia coliKlebsiella oxytocaKlebsiella pneumoniaePseudomonas aeruginosaPseudomonas putidaEnterobacter cloacae complex
MICInterMICInterMICInterMICInterMICInterMICInter

ESBLNEGNEGNEGNEGNEGNEG
Ampicillin≥32R≥32R≥32R≥32R≥32R16I
Amoxicillin/clavulanic acid16I≤2S≥32R≥32R≥32R≤2R
Piperacillin/tazobactam64I≤4S16R8I32I≤4S
Cefaxitin16I≤2S≥64R16I16I≤2R
Cefoxitin≤4S≤4S≥64R≥64R≥64R8R
Ceftazidime≤1S≤1S4R4S8S≤1S
Ceftriaxone≤1S≤1S32R≥64R32I≤1S
Cefepime≤1S≤1S2I2S2S≤1S
Amikacin≤2S≤2S4I≤2S≤2S≤2S
Ciprofloxacin≤0.25S≤0.25S0.5S≤0.25S≤0.25S≤0.25S
Tigecycline≤0.5S≤0.5S≥8R≥8R≥8R≤0.5S
Nitrofurantoin≤16S64I≥512R≥512R≥512R64I
Trimethoprim/sulfamethoxazole≥320R≤20S160R160R320R≤20S

S = susceptible; I = intermediate; R = resistance; modified; MIC = minimum inhibition concentration; Inter = interpretation.

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