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01.12.2016 | Research article | Ausgabe 1/2016 Open Access

BMC Infectious Diseases 1/2016

Clinical characteristics and outcomes of spontaneous bacterial peritonitis caused by Enterobacter species versus Escherichia coli: a matched case-control study

Zeitschrift:
BMC Infectious Diseases > Ausgabe 1/2016
Autoren:
Seongman Bae, Taeeun Kim, Min-Chul Kim, Yong Pil Chong, Sung-Han Kim, Heungsup Sung, Young-Suk Lim, Sang-Oh Lee, Mi-Na Kim, Yang Soo Kim, Jun Hee Woo, Sang-Ho Choi
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Electronic supplementary material

The online version of this article (doi:10.​1186/​s12879-016-1595-y) contains supplementary material, which is available to authorized users.
An erratum to this article can be found at http://​dx.​doi.​org/​10.​1186/​s12879-016-1828-0.

Abstract

Background

Enterobacter species are important nosocomial pathogens, and there is growing concern about their ability to develop resistance during antimicrobial therapy. However, few data are available on the clinical characteristics and outcomes of Enterobacter spontaneous bacterial peritonitis (SBP).

Methods

We retrospectively identified all patients with SBP caused by Enterobacter species admitted to a tertiary care hospital between January 1997 and December 2013. Each case was age- and sex-matched with four patients with Escherichia coli SBP.

Results

A total of 32 cases with Enterobacter SBP and 128 controls with E. coli SBP were included. Twenty-one (65.6 %) cases and 111 (86.7 %) controls had Child-Pugh class C (P = 0.006). Cases were significantly more likely to have hepatocellular carcinoma (65.6 % vs. 37.5 %, P = 0.004) and upper gastrointestinal bleeding (28.1 % vs. 9.4 %, P = 0.005). The initial response to empirical therapy (81.3 % vs. 81.2 %, P = 0.995) and the 30-day mortality (37.5 % vs. 28.9 %, P = 0.35) were not significantly different between the groups. Drug resistance emerged in one case and in no controls (4.3 % [1/23] vs. 0 % [0/98], P = 0.19).

Conclusions

Compared with E. coli SBP, patients with Enterobacter SBP more frequently had hepatocellular carcinoma and upper gastrointestinal bleeding, yet clinical outcomes were comparable. Development of resistance during third-generation cephalosporin therapy was infrequent in patients with Enterobacter SBP.
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