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2017 ; 9
(30
): 1166-1175
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Current concepts and future strategies in the antimicrobial therapy of emerging
Gram-positive spontaneous bacterial peritonitis
#MMPMID29109849
Fiore M
; Maraolo AE
; Gentile I
; Borgia G
; Leone S
; Sansone P
; Passavanti MB
; Aurilio C
; Pace MC
World J Hepatol
2017[Oct]; 9
(30
): 1166-1175
PMID29109849
show ga
Spontaneous bacterial peritonitis (SBP) is the most common infection in end-stage
liver disease patients. SBP is defined as an ascitic fluid infection with a
polymorphonuclear leucocyte count ? 250/mm(3) without an evident intra-abdominal
surgically treatable source. Several mechanisms contribute to SBP occurrence,
including translocation of gut bacteria and their products, reduced intestinal
motility provoking bacterial overgrowth, alteration of the gut's barrier function
and local immune responses. Historically, Gram-negative enteric bacteria have
been the main causative agents of SBP, thereby guiding the empirical therapeutic
choice. However, over the last decade, a worryingly increasing prevalence of
Gram-positive and multi-drug resistant (MDR) SBP has been seen. Recently, the
microbiological spectrum of SBP seems to have changed in Europe due to a high
prevalence of Gram-positive bacteria (48%-62%). The overall proportion of MDR
bacteria is up to 22%-73% of cases. Consequently, empirical therapy based on
third-generation cephalosporins or amoxicillin/clavulanic acid, can no longer be
considered the standard of care, as these drugs are associated with poor
outcomes. The aim of this review is to describe, with an epidemiological focus,
the evidence behind this rise in Gram-positive and MDR SBP from 2000 to present,
and illustrate potential targeted therapeutic strategies. An appropriate
treatment protocol should include daptomycin plus ceftaroline and meropenem, with
prompt stepdown to a narrower spectrum when cultures and sensitivity data are
available in order to reduce both cost and potential antibiotic resistance
development.