Evaluating Multi-Drug Resistant Acinetobacter Baumannii In Critical Care Units

Author(s):  
Samuel K. Bouchillon ◽  
Meredith Hackel ◽  
Daryl Hoban ◽  
Brian Johnson ◽  
Robert Badal ◽  
...  
2015 ◽  
Vol 9 (12) ◽  
pp. 1323-1330 ◽  
Author(s):  
Basima Abdalla Almomani ◽  
Amanda McCullough ◽  
Rawan Gharaibeh ◽  
Shaher Samrah ◽  
Fatimah Mahasneh

Introduction: Ventilator-associated pneumonia (VAP) caused by multidrug-resistant Acinetobacter baumannii (MDR-AB) is common in hospitals and impacts patient survival. We determined the incidence of MDR-AB VAP in critical care units and examined the predictors of 14-day mortality in these patients. Methodology: A retrospective case series study was conducted at a tertiary referral teaching hospital in north Jordan. A list of patients with a positive culture of A. baumannii between January 2007 and June 2013 was retrieved using computerized hospital databases. Medical records of all these patients were reviewed, and cases of VAP infected with MDR-AB were identified. Predictors of 14-day mortality were determined using multivariable logistic regression adjusted for possible confounders. Results: Out of 121 A. baumannii-VAP cases, 119 (98.3%) were caused by MDR-AB. The incidence rate of MDR-AB VAP was 1.59 cases per 100 critical care unit admissions. The mortality of A. baumannii-VAP cases in critical care units was 42% (50/119). Being prescribed two or more definitive antibiotics (prescribed based on susceptibility data) (OR = 0.075, 95% CI = 0.017–0.340, p = 0.001) and ipratropium/salbutamol during mechanical ventilation (OR = 0.140, 95% CI = 0.028–0.705, p = 0.017) were independently associated with lower hospital mortality. Conclusions: Our results suggest incidence of MDR-AB VAP in critical care units is high and that prescription of antibiotics based on antibiotic susceptibility and use of bronchodilators is associated with lower mortality in this population. Larger prospective studies are needed to explore whether these findings can be replicated in different clinical settings.


Author(s):  
Elham Abbasi ◽  
Hossein Goudarzi ◽  
Ali Hashemi ◽  
Alireza Salimi Chirani ◽  
Abdollah Ardebili ◽  
...  

AbstractA major challenge in the treatment of infections has been the rise of extensively drug resistance (XDR) and multidrug resistance (MDR) in Acinetobacter baumannii. The goals of this study were to determine the pattern of antimicrobial susceptibility, blaOXA and carO genes among burn-isolated A. baumannii strains. In this study, 100 A. baumannii strains were isolated from burn patients and their susceptibilities to different antibiotics were determined using disc diffusion testing and broth microdilution. Presence of carO gene and OXA-type carbapenemase genes was tested by PCR and sequencing. SDS-PAGE was done to survey CarO porin and the expression level of carO gene was evaluated by Real-Time PCR. A high rate of resistance to meropenem (98%), imipenem (98%) and doripenem (98%) was detected. All tested A. baumannii strains were susceptible to colistin. The results indicated that 84.9% were XDR and 97.9% of strains were MDR. In addition, all strains bore blaOXA-51 like and blaOXA-23 like and carO genes. Nonetheless, blaOXA-58 like and blaOXA-24 like genes were harbored by 0 percent and 76 percent of strains, respectively. The relative expression levels of the carO gene ranged from 0.06 to 35.01 fold lower than that of carbapenem-susceptible A. baumannii ATCC19606 and SDS – PAGE analysis of the outer membrane protein showed that all 100 isolates produced CarO. The results of current study revealed prevalence of blaOXA genes and changes in carO gene expression in carbapenem resistant A.baumannii.


2016 ◽  
Author(s):  
Amirhossein Meisami ◽  
Jivan Deglise-Hawkinson ◽  
Mark Cowen ◽  
Mark P. Van Oyen

Author(s):  
Elise Paradis ◽  
Warren Mark Liew ◽  
Myles Leslie

Drawing on an ethnographic study of teamwork in critical care units (CCUs), this chapter applies Henri Lefebvre’s ([1974] 1991) theoretical insights to an analysis of clinicians’ and patients’ embodied spatial practices. Lefebvre’s triadic framework of conceived, lived, and perceived spaces draws attention to the role of bodies in the production and negotiation of power relations among nurses, physicians, and patients within the CCU. Three ethnographic vignettes—“The Fight,” “The Parade,” and “The Plan”—explore how embodied spatial practices underlie the complexities of health care delivery, making visible the hidden narratives of conformity and resistance that characterize interprofessional care hierarchies. The social orderings of bodies in space are consequential: seeing them is the first step in redressing them.


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