Impact of high prevalence of pseudomonas and polymicrobial gram-negative infections in major sub-/total traumatic amputations on empiric antimicrobial therapy: a retrospective study

World Journal of Emergency Surgery

Christian Kleber¹  Andrej Trampuz¹  Florian Wichlas¹  Philipp Schwabe¹  Moritz T Giesecke¹ 

[1] Center for Musculoskeletal Surgery, AG Polytrauma, Charité - Universitätsmedizin, Augustenburger Platz 1, 13353 Berlin, Germany

关键词: Antimicrobial therapy;    Pseudomonas;    Pathogen;    Infection;    Amputation;    Open fracture;    Trauma;   

Others  :  1146057
DOI  :  10.1186/1749-7922-9-55

 received in 2014-08-31, accepted in 2014-10-15,  发布年份 2014

【 摘 要 】

Introduction

Emergency treatment of major sub-/total traumatic amputations continue to represent a clinical challenge due to high infection rates and serious handicaps. Effective treatment is based on two columns: surgery and antimicrobial therapy. Detailed identification of pathogen spectrum and epidemiology associated with these injuries is of tremendous importance as it guides the initial empiric antibiotic regimen and prevents adverse septic effents.

Methods

In this retrospective study 51 patients with major traumatic amputations (n = 16) and subtotal amputations (n = 35) treated from 2001 to 2010 in our trauma center were investigated. All patients received emergency surgery, debridement with microbiological testing within 6 h after admission and empircic antimicrobial therapy. Additionally to baseline patient characteristics, the incidence of positive standardized microbiologic testing combined with clinical signs of infection, pathogen spectrum, administered antimicrobial agents and clinical complications were analyzed.

Results

70.6% of the patients (n = 36) acquired wound infection. In 39% wounds were contaminated on day 1, whereas the mean length of duration until first pathogen detection was 9.1 ± 13.4 days after injury. In 37% polymicrobial colonization and 28% Pseudomonas were responsible for wound infections during hospitalization. In 45% the empirc antimicrobial therapy focussed on Gram positive strains did not cover the detected bacteria, according antimicrobial resistogram. It was significantly more often found in infections associated with Pseudomonas (p 0.02) or polymicrobial wound infections.

Conclusions

This epidemiologic study reveals a pathogen shift from Gram-positive to Gram-negative strains with high incidence of Pseudomonas and polymicrobial infections in sub-/total major traumatic amputations. Therefore, empiric antimicrobial treatment historically focussing on Gram-positive strains must be adjusted. We recommend the use of Piperacillin/Tazobactam for these injuries. As soon as possible antimicrobial treatment should be changed from empiric to goal directed therapy according to the microbiological tests and resistogram results.

【 授权许可】

   
2014 Giesecke et al.; licensee BioMed Central Ltd.

【 图 表 】

Figure 1.

Figure 2.

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