Abstract:
BACKGROUND:The objective of this study was to evaluate the mortality of and risk factors for bacteriuria due to carbapenem-resistant Klebsiella pneumoniae (CRKp) versus carbapenem-susceptible K. pneumoniae (CSKp) producing extended spectrum β lactamase (ESBL). METHODS:This was a retrospective case-control study in which 135 case-patients with bacteriuria due to CRKp were compared with 127 control patients with CSKp producing ESBL. In a first step, multivariate Cox regression and Kaplan-Meier survival analysis models were used to determine the difference in mortality between the two groups and risk factors for mortality. In a second step, a univariate analysis was used to identify risk factors for CRKp colonization. RESULTS:There were no significant demographic or clinical differences between the groups. In-hospital mortality in the study and control groups was 29 and 25 %, respectively (non-significant difference). Multivariate analysis revealed that the most important risk factor for mortality in both groups was being bed ridden [hazard ratio 2.2, 95 % confidence interval (CI) 1.23-3.93; P = 0.008]. Patients with CRKp bacteriuria had a longer hospitalization time with a mean ± standard deviation of 28 ± 33 days compared to 22 ± 28 days in the control group (P < 0.05). Several univariate risk factors for acquiring CRKp bacteriuria were identified: antibiotic use [odds ratio (OR) 1.93, 95 % CI 1.18-3.17, p = 0.008], especially colistin (OR 2.04, 95 % CI 1.04-4.02; P = 0.036), presence of a urinary catheter (OR 2.09, 95 % CI 1.2-3.63; P = 0.008), surgery (OR 3.94, 95 % CI 1.85-8.37; P = 0.0002), invasive procedures (OR 3.06, 95 % CI 1.61-5.8; P = 0.0004), and intensive care unit admission (OR 2.49, 95 % CI 1.18-5.37; P = 0.015). CONCLUSION:Bacteriuria caused by CRKp as compared that caused by CSKp was not found to be a risk factor for death.
journal_name
Infectionjournal_title
Infectionauthors
Shilo S,Assous MV,Lachish T,Kopuit P,Bdolah-Abram T,Yinnon AM,Wiener-Well Ydoi
10.1007/s15010-012-0380-0subject
Has Abstractpub_date
2013-04-01 00:00:00pages
503-9issue
2eissn
0300-8126issn
1439-0973journal_volume
41pub_type
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