Treatment and clinical outcomes of urinary tract infections caused by KPC-producing Enterobacteriaceae in a retrospective cohort.

Abstract:

BACKGROUND:Optimal treatment regimens for infections caused by Klebsiella pneumoniae carbapenemase (KPC)-producing Enterobacteriaceae are not well-defined. OBJECTIVES:This study describes the treatment and outcomes in patients with urinary tract infection (UTI) caused by KPC-producing Enterobacteriaceae. METHODS:This retrospective cohort study analyzed data from adult inpatients with bacteriuria caused by KPC-positive organisms treated at Barnes-Jewish Hospital from June 1, 2006, to February 1, 2008. KPC-positive isolates were identified utilizing disk-diffusion susceptibility testing and confirmed to contain bla(KPC) via molecular methods. RESULTS:Twenty-one patients met the inclusion criteria and all were classified as having symptomatic UTI. The majority of patients were female (15/21 [71%]), and the mean (SD) age was 62.4 (15.2) years. Successful clinical and microbiologic responses were observed in 16 patients (76%) for both outcomes. Patients with urinary catheters had them removed or replaced in 9 of 15 cases (60%). Antibiotics active against the isolated pathogen were provided in 14 of 21 cases (67%), often after considerable delay (median, 72.5 hours [range, 4-312 hours]). All 7 patients receiving aminoglycoside therapy had successful clinical and microbiologic responses, and in vitro testing of an extended antibiotic panel revealed high susceptibility rates for tigecycline (28/29 [97%]), minocycline (22/29 [76%]), and fosfomycin (25/29 [86%]) against the KPC-positive isolates. CONCLUSIONS:Although receipt of appropriate therapy was delayed in many cases, clinical outcomes investigated revealed [corrected] high rates of successful response in this defined group of patients Aminoglycosides and tetracycline derivatives suggested therapeutic promise in the treatment of KPC-producing Enterobacteriaceae UTI.

journal_name

Clin Ther

journal_title

Clinical therapeutics

authors

Alexander BT,Marschall J,Tibbetts RJ,Neuner EA,Dunne WM Jr,Ritchie DJ

doi

10.1016/j.clinthera.2012.05.002

subject

Has Abstract

pub_date

2012-06-01 00:00:00

pages

1314-23

issue

6

eissn

0149-2918

issn

1879-114X

pii

S0149-2918(12)00320-7

journal_volume

34

pub_type

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