TABLE 2

Susceptibility by ICU status, source of P. aeruginosa isolate, infection onset, and hospital characteristicsa

CharacteristicNo. of isolates% susceptibility
ESCCarbTZPAGFQ
Single agentFQ comboAG comboSingle agentFQ comboAG comboSingle agentFQ comboAG comboSingle agentFQ comboSingle agentAG combo
All11,70179.086.190.079.385.090.285.090.593.382.587.772.787.7
ICU status
    ICU5,15777.985.390.776.783.190.183.789.893.484.288.072.288.0
    Non-ICU6,54479.886.789.581.486.590.386.091.193.181.187.573.187.5
Source
    Respiratory10,46577.985.389.378.384.289.684.289.992.881.587.071.787.0
    Blood1,23687.993.095.987.891.795.791.595.597.490.793.681.593.6
Onset
    Hospital6,44576.284.789.776.182.989.282.289.292.882.687.371.287.3
    Admission5,25682.487.890.483.387.691.588.492.193.982.288.274.688.2
Urban/rural
    Urban11,17678.685.889.879.284.990.184.690.293.182.387.572.587.5
    Rural52586.793.194.582.188.093.991.695.897.186.191.477.091.4
Teaching status
    Nonteaching6,90477.584.889.177.483.789.083.689.692.581.286.971.286.9
    Teaching4,79781.188.091.482.186.892.086.991.894.584.388.974.988.9
Bed size
    >3008,21676.984.888.977.483.889.183.389.492.481.586.972.186.9
    100–3003,09283.988.992.883.887.792.988.992.895.384.789.373.889.3
    <10039383.090.392.485.089.693.989.194.495.785.892.178.692.1
CDC region
    South5,78580.087.290.680.386.090.586.291.693.982.888.374.688.3
    Midwest3,29377.785.388.977.883.889.383.889.792.380.486.471.186.4
    West1,42877.783.490.578.982.990.780.886.592.784.988.470.688.4
    Northeast1,19578.986.289.779.286.090.887.192.293.683.087.771.087.7
  • a AG, aminoglycoside (gentamicin, tobramycin, amikacin); Carb, carbapenem (imipenem, meropenem); CDC, Centers for Disease Control and Prevention; combo, combination antibiogram; ESC, extended-spectrum cephalosporins (ceftazidime, cefepime); FQ, fluoroquinolone (ciprofloxacin, levofloxacin); ICU, intensive care unit; TZP, piperacillin-tazobactam.