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. 2017 Jul 25;61(8):e00883-17.
doi: 10.1128/AAC.00883-17. Print 2017 Aug.

Ceftazidime-Avibactam Is Superior to Other Treatment Regimens against Carbapenem-Resistant Klebsiella pneumoniae Bacteremia

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Ceftazidime-Avibactam Is Superior to Other Treatment Regimens against Carbapenem-Resistant Klebsiella pneumoniae Bacteremia

Ryan K Shields et al. Antimicrob Agents Chemother. .

Abstract

There are no data comparing outcomes of patients treated with ceftazidime-avibactam versus comparators for carbapenem-resistant Enterobacteriaceae infections. At our center, ceftazidime-avibactam treatment of carbapenem-resistant Klebsiella pneumoniae bacteremia was associated with higher rates of clinical success (P = 0.006) and survival (P = 0.01) than other regimens. Across treatment groups, there were no differences in underlying diseases, severity of illness, source of bacteremia, or strain characteristics (97% produced K. pneumoniae carbapenemase). Aminoglycoside- and colistin-containing regimens were associated with increased rates of nephrotoxicity (P = 0.002).

Keywords: Klebsiella pneumoniae; Klebsiella pneumoniae carbapenemase; bacteremia; carbapenem-resistant Enterobacteriaceae; ceftazidime-avibactam; clinical success.

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Figures

FIG 1
FIG 1
Rates of 30-day clinical success across treatment regimens. Among patients with carbapenem-resistant Klebsiella pneumoniae bacteremia, rates of clinical success were significantly higher among patients receiving ceftazidime-avibactam than among those who received a carbapenem plus aminoglycoside (P = 0.04) or colistin (P = 0.009) or other regimens (P = 0.004). Other regimens included aminoglycoside (n = 11), carbapenem (n = 8), colistin (n = 4), tigecycline (n = 4), and ciprofloxacin (n = 2) monotherapy, as well as combination regimens of colistin plus tigecycline (n = 3), aminoglycoside plus tigecycline (n = 2), and 1 each of aminoglycoside plus cefepime, aminoglycoside plus colistin plus tigecycline, colistin plus aztreonam, colistin plus cefepime, colistin plus ciprofloxacin, carbapenem plus doxycycline, and carbapenem plus tigecycline.

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