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2016 ; 95
(21
): e3573
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Recommended Initial Antimicrobial Therapy for Emphysematous Pyelonephritis: 51
Cases and 14-Year-Experience of a Tertiary Referral Center
#MMPMID27227920
Lu YC
; Hong JH
; Chiang BJ
; Pong YH
; Hsueh PR
; Huang CY
; Pu YS
Medicine (Baltimore)
2016[May]; 95
(21
): e3573
PMID27227920
show ga
The aim of this study was to investigate the profiles of pathogens and patterns
of antibiotic resistance of emphysematous pyelonephritis (EPN), offering
recommendations for initial antibiotic treatment.Between January, 2001, and
November, 2014, demographic data, presenting clinical features, management
strategies, and treatment outcomes of 51 patients with EPN were retrospectively
reviewed, analyzing microbiological characteristics of causative pathogens and
patterns of antibiotic resistance.Overall survival rate was 90.2% (46/51).
Pathogens isolated most frequently were Escherichia coli (49.0%), Klebsiella
pneumoniae (19.6%), and Proteus mirabilis (17.7%). Approximately 24% of E coli
isolates and 22% K pneumoniae isolates were resistant to fluoroquinolones.
Improper empiric antibiotic use (P?=?0.02) and third-generation
cephalosporin-resistant pathogens (G3CRP) (P?=?0.01) were significantly more
common in cases of patient fatality. Prior hospitalization and antibiotic use
within past year (P?=?0.03), need for emergency hemodialysis (P?=?0.03), and
development of disseminated intravascular coagulation (DIC) (P?=?0.03) were
factors correlating significantly with microbial resistance to third-generation
cephalosporins. The area under the receiver operating characteristic curve was
0.91. The cut-off point determined by the maximum Youden index for 2 of these 3
factors yielded a sensitivity of 0.8 and specificity of 0.93.Third-generation
cephalosporins are recommended as initial treatment of EPN. In patients with
histories of prior hospitalization and antibiotic use and in those needing
emergency hemodialysis or developing DIC, carbapenem is the empiric antibiotic of
choice. Patients presenting with 2 or more factors carry the highest risk of
G3CRP involvement. Fluoroquinolone and gentamicin should be avoided.
|*Drug Resistance, Microbial
[MESH]
|Acute Disease
[MESH]
|Adult
[MESH]
|Age Factors
[MESH]
|Aged
[MESH]
|Aged, 80 and over
[MESH]
|Anti-Bacterial Agents/*pharmacology/*therapeutic use
[MESH]
|Cephalosporins/pharmacology/therapeutic use
[MESH]
|Female
[MESH]
|Fluoroquinolones/pharmacology/therapeutic use
[MESH]