scholarly journals Resistance Rates of Acinetobacter baumannii Against Some Antibiotics: Comparison of 2018 and 2006 Results

ANKEM Dergisi ◽  
2020 ◽  
Author(s):  
Nurullah Uzuner ◽  
Selahhattin Atmaca ◽  
Muhammet Çelik ◽  
Handan Kangül
Keyword(s):  
Intensive Care ◽  
Acinetobacter Baumannii ◽  
Intensive Care Units ◽  
Treatment Options ◽  
Resistance Rate ◽  
Serious Infection ◽  
One Year ◽  
The One ◽  
Comparison Of The Results ◽  
Resistance Rates

Acinetobacter baumannii is a type of bacteria that causes serious hospital infections in intensive care units (ICUs) and immunocompromised patients. In this study, the one-year cumulative antibiogram results of A.baumannii strains, which are serious infection factors especially in intensive care patients, were retrospectively analyzed, at the same time, the results of sensitivity in a similar study conducted in our hospital in 2006 were compared with our results. Of the 388 isolates included in the study, 208 were isolated from male (53.6 %), 180 from female (46.4 %) patients, 87 % of the strains were from adults, 13 % from children (including newborns). 46.4 % of the factors were produced by the respiratory tract, 26.80 % from blood culture, 11.85 % from urine, 9.53 % from the wound 85 % of the samples were sent from intensive care units, 15 % from services (9.4 % internal service, 5.6 % surgical service), 6.95 % from the burn unit. The vast majority of the isolated A.baumannii strains were found to be adults. As a result of the antibiogram, the highest resistance rate to imipenem with 94.84 %; the lowest resistance rate was determined against colistin with 20 %. In the comparison of the results obtained in our hospital with the results of similar studies conducted in 2006, a significant increase in resistance was found for amikacin, ciprofloxacin, imipenem and meropenem (p<0.005), For trimethoprim / sulfamethoxazole, the resistance rate decreased (p>0.005). In this study, we showed that the resistance rates against A.baumannii strains increased over time, and the treatment options related to this are now very limited. Determining the resistance rates of common infectious agents at certain intervals by each hospital will be a guide in the effective treatment of infections that develop due to strains with limited antibiotic options.

scholarly journals Bacteraemia in Intensive Care Unit: Clinical, Bacteriological, and Prognostic Prospective Study

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Zineb Lachhab ◽  
Mohammed Frikh ◽  
Adil Maleb ◽  
Jalal Kasouati ◽  
Nouafal Doghmi ◽  
...  
Keyword(s):  
Intensive Care ◽  
Acinetobacter Baumannii ◽  
Intensive Care Units ◽  
Bloodstream Infections ◽  
Blood Cultures ◽  
Common Source ◽  
Gram Negative ◽  
Extended Spectrum Beta Lactamases ◽  
Gram Negative Organisms ◽  
One Year

Objectives.We conducted a one-year observational study from December 2012 to November 2013 to describe the epidemiology of bacteraemia in intensive care units (ICU) of Mohammed V Military Teaching Hospital of Rabat (Morocco).Methods.The study consisted of monitoring all blood cultures coming from intensive care units and studying the bacteriological profile of positive blood cultures as well as their clinical significance.Results.During this period, a total of 46 episodes of bacteraemia occurred, which corresponds to a rate of 15,4/1000 patients. The rate of nosocomial infections was 97% versus 3% for community infections. The most common source of bacteraemia was the lungs in 33%, but no source was identified in 52% of the episodes. Gram negative organisms were isolated in 83,6% of the cases withAcinetobacter baumanniibeing the most frequent. Antibiotic resistance was very high with 42,5% of extended-spectrum beta-lactamases (ESBLs) in Enterobacteriaceae and 100% of carbapenemase inAcinetobacter baumannii. The antibiotherapy introduced in the first 24 hours was adequate in 72% of the cases.Conclusions.Bloodstream infections in ICU occur most often in patients over 55 years, with hypertension and diabetes. The bacteria involved are mainly Gram negative bacteria multiresistant to antibiotics. Early administration of antibiotics significantly reduces patients mortality.

Genodiversity of ResistantPseudomonas aeruginosaIsolates in Relation to Antimicrobial Usage Density and Resistance Rates in Intensive Care Units

2008 ◽  
Vol 29 (4) ◽  
pp. 350-357 ◽  
Author(s):  
Daniel Jonas ◽  
Elisabeth Meyer ◽  
Frank Schwab ◽  
Hajo Grundmann
Keyword(s):  
Intensive Care ◽  
Intensive Care Units ◽  
High Resistance ◽  
Resistance Rate ◽  
Fisher Exact Test ◽  
Indirect Measure ◽  
Antimicrobial Usage ◽  
Defined Daily Doses ◽  
Cross Transmission ◽  
Resistance Rates

Objective.To evaluate the assumption that resistance rates in intensive care units (ICUs) are markedly influenced by cross-transmission events in addition to high rates of antimicrobial usage.Methods.This was a prospective ICU- and laboratory-based surveillance study involving 35 German ICUs from 1999 through 2004. A total of 585 ciprofloxacin- or imipenem-resistant isolates ofPseudomonas aeruginosawere investigated together with resistance rate and unit-based antimicrobial usage density. Antimicrobial use was reported in terms of defined daily doses per 1,000 patient-days. All the strains were assigned to ICU-based genotypes. Genodiversity was calculated as the numbers of indistinguishable ICU-based genotypes found per isolates tested. Reduced ICU-based genodiversity was taken as an indirect measure of frequently occurring cross-transmission events.Results.The genodiversity of ciprofloxacin- and imipenem-resistant P.aeruginosaisolates was significantly lower (P≤ .05, by Fisher exact test) in ICUs with high resistance rate and low antimicrobial usage density (genodiversity, 0.50 and 0.50, respectively) than in ICUs that featured low resistance rate in the presence of high antimicrobial usage density (genodiversity, 0.90 and 0.95, respectively). In ICUs with low genodiversity, there was a greater rise in resistance rate with increasing antimicrobial usage density, compared with that in ICUs with high diversity.Conclusions.This study on resistant P.aeruginosaisolates supports the assumption that high resistance rate in the presence of low antimicrobial usage density results from more-frequent cross-transmission events. A greater rise in resistance rate with increasing antimicrobial usage density in ICUs with low genodiversity indicates that resistance rate in ICUs might be markedly determined by cross-transmission events other than antimicrobial usage.

PREVALENCE OF CARBAPENEM-RESISTANT ACINETOBACTER BAUMANNII (CRAB) IN MEDICAL AND SURGICAL INTENSIVE CARE UNITS (ICUS) OF JPMC, KARACHI

2019 ◽  
Author(s):  
Rabia Arshad
Keyword(s):  
Intensive Care ◽  
Antimicrobial Resistance ◽  
Acinetobacter Baumannii ◽  
Intensive Care Units ◽  
Carbapenem Resistance ◽  
Chronic Obstructive ◽  
Surgical Intensive Care ◽  
Carbapenem Resistant ◽  
Number Of Patients ◽  
Increased Risk

Background: Antimicrobial resistance is one of the research priorities of health organizations due to increased risk of morbidity and mortality. Outbreaks of nosocomial infections caused by carbapenem-resistant Acinetobacter Baumannii (CRAB) strains are at rise worldwide. Antimicrobial resistance to carbapenems reduces clinical therapeutic choices and frequently led to treatment failure. The aim of our study was to determine the prevalence of carbapenem resistance in A. baumannii isolated from patients in intensive care units (ICUs). Methods: This cross-sectional study was carried out in the Department of Microbiology, Basic Medical Sciences Institute (BMSI), Jinnah Postgraduate Medical Centre (JPMC), Karachi, from December 2016 to November 2017. Total 63 non-repetitive A. baumannii were collected from the patients’ specimens, admitted to medical and surgical ICUs and wards of JPMC, Karachi. The bacterial isolates were processed according to standard microbiological procedures to observe for carbapenem resistance. SPSS 21 was used for data analysis. Results: Out of the 63 patients, 40 (63.5%) were male. The age of the patient ranged from 15-85 year, with average of 43 year. 34.9% patients had been hospitalized for 3 days. Chronic obstructive pulmonary disease was present in highest number with average of 58.7% for morbidity. Number of patients on mechanical ventilation was highest (65.1%). All isolates were susceptible to colistin. The resistance to ampicillin-sulbactam, ceftazidime, ciprofloxacin, amikacin, piperacillin- tazobactam and meropenem was 82.5%, 81%, 100%, 87.3%, 82.5% and 82% respectively. Out of 82% CRAB, 77% were obtained from ICUs. Conclusion: This study has revealed the high rate of carbapenem resistance in A. baumannii isolates in ICUs thus leaving behind limited therapeutic options.

scholarly journals The national rate of intensive care units-acquired infections, one-year retrospective study in Iran

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Neda Izadi ◽  
Babak Eshrati ◽  
Yadollah Mehrabi ◽  
Korosh Etemad ◽  
Seyed-Saeed Hashemi-Nazari
Keyword(s):  
Intensive Care ◽  
Tract Infection ◽  
Intensive Care Units ◽  
Bloodstream Infections ◽  
Surgical Site Infections ◽  
Increased Risk ◽  
Neonatal Icu ◽  
Mortality Causes ◽  
One Year ◽  
Multi Center Study

Abstract Background Hospital-acquired infections (HAIs) in intensive care units (ICUs) are among the avoidable morbidity and mortality causes. This study aimed at investigating the rate of ICU-acquired infections (ICU-AIs) in Iran. Methods For the purpose of this multi-center study, the rate of ICU-AIs calculated based on the data collected through Iranian nosocomial infections surveillance system and hospital information system. The data expanded based on 12 months of the year (13,632 records in terms of “hospital-ward-month”), and then, the last observation carried forward method was used to replace the missing data. Results The mean (standard deviation) age of 52,276 patients with HAIs in the ICUs was 47.37 (30.78) years. The overall rate of ICU-AIs was 96.61 per 1000 patients and 16.82 per 1000 patient-days in Iran’s hospitals. The three main HAIs in the general ICUs were ventilator-associated events (VAE), urinary tract infection (UTI), and pneumonia events & lower respiratory tract infection (PNEU & LRI) infections. The three main HAIs in the internal and surgical ICUs were VAE, UTI, and bloodstream infections/surgical site infections (BSI/SSI). The most prevalent HAIs were BSI, PNEU & LRI and eye, ear, nose, throat, or mouth (EENT) infections in the neonatal ICU and PNEU & LRI, VAE, and BSI in the PICU. Device, catheter, and ventilator-associated infections accounted for 60.96, 18.56, and 39.83% of ICU-AIs, respectively. The ventilator-associated infection rate was 26.29 per 1000 ventilator-days. Based on the Pabon Lasso model, the lowest rates of ICU-AIs (66.95 per 1000 patients and 15.19 patient-days) observed in zone III, the efficient area. Conclusions HAIs are common in the internal ICU wards. In fact, VAE and ventilator-related infections are more prevalent in Iran. HAIs in the ICUs leads to an increased risk of ICU-related mortality. Therefore, to reduce ICU-AIs, the specific and trained personnel must be responsible for the use of the devices (catheter use and ventilators), avoid over use of catheterization when possible, and remove catheters earlier.

Extensively drug-resistant Acinetobacter baumannii isolated from intensive care units in northern Italy: a genomic approach to characterize new sequence types

2019 ◽  
Vol 14 (15) ◽  
pp. 1281-1292 ◽  
Author(s):  
Giovanni Lorenzin ◽  
Erika Scaltriti ◽  
Franco Gargiulo ◽  
Francesca Caccuri ◽  
Giorgio Piccinelli ◽  
...  
Keyword(s):  
Intensive Care ◽  
Whole Genome Sequencing ◽  
Acinetobacter Baumannii ◽  
Intensive Care Units ◽  
Genome Sequencing ◽  
Multilocus Sequence Typing ◽  
Whole Genome ◽  
Drug Resistant ◽  
Extensively Drug Resistant ◽  
Sequence Types

Aim: This study aims to characterize clinical strains of Acinetobacter baumannii with an extensively drug-resistant phenotype. Methods: VITEK® 2, Etest® method and broth microdilution method for colistin were used. PCR analysis and multilocus sequence typing Pasteur scheme were performed to identify bla-OXA genes and genetic relatedness, respectively. Whole-genome sequencing analysis was used to characterize three isolates. Results: All the isolates were susceptible only to polymyxins. blaOXA-23-like gene was the only acquired carbapenemase gene in 88.2% of the isolates. Multilocus sequence typing identified various sequence types: ST2, ST19, ST195, ST577 and ST632. Two new sequence types, namely, ST1279 and ST1280, were detected by whole-genome sequencing. Conclusion: This study showed that carbapenem-resistant A. baumannii isolates causing infections in intensive care units almost exclusively produce OXA-23, underlining their frequent spread in Italy.

scholarly journals High Prevalence of Antimicrobial Resistance Among Gram-Negative Isolated Bacilli in Intensive Care Units at a Tertiary-Care Hospital in Yucatán Mexico

Medicina ◽  
2019 ◽  
Vol 55 (9) ◽  
pp. 588 ◽  
Author(s):  
Andrés H. Uc-Cachón ◽  
Carlos Gracida-Osorno ◽  
Iván G. Luna-Chi ◽  
Jonathan G. Jiménez-Guillermo ◽  
Gloria M. Molina-Salinas
Keyword(s):  
Escherichia Coli ◽  
Intensive Care ◽  
Antimicrobial Resistance ◽  
Intensive Care Units ◽  
High Resistance ◽  
Tertiary Care Hospital ◽  
Tertiary Care ◽  
Care Hospital ◽  
Gram Negative ◽  
Resistance Rates

Background and Objectives: Antimicrobial resistance (AMR) is increasing worldwide and imposes significant life-threatening risks to several different populations, especially to those in intensive care units (ICU). The most commonly isolated organisms in ICU comprise gram-negative bacilli (GNB), and these represent a leading cause of serious infections. This study was conducted to describe the prevalence of resistance in GNB isolated from patients in adults, pediatric, and neonatal ICU in a tertiary-care hospital in Mérida, Mexico. Materials and Methods: A retrospective study was done on samples collected in Neonatal (NICU), Pediatric (PICU) and Adult (AICU) ICU of Unidad Médica de Alta Especialidad, Instituto Mexicano del Seguro Social in Mérida, México. The identification of isolates and antimicrobial susceptibility testing were performed using an automated system. Results: A total of 517 GNB strains were isolated. The most common positive culture was bronchial secretions. Pseudomonas aeruginosa was the prevalent pathogen in NICU and PICU, whereas Escherichia coli was common in the AICU. Overall, GNB exhibited a high resistance rates for Ampicillin (95.85%), Cefuroxime (84.17%), Piperacillin (82.93%), Cefotaxime (78.07%), Ceftriaxone (77.41%), Aztreonam (75.23%), Cefazolin (75.00%), and Ceftazidime (73.19%). There are significant differences in the resistance rates of GNB from different ICUs for penicillins, cephalosporins, carbapenems and fluoroquinolones drugs. Escherichia coli (multidrug-resistant [MDR] = 91.57%, highly resistant microorganisms [HRMO] = 90.36%) and Acinetobacter baumannii (MDR = 86.79%, HRMO = 83.02%) exhibited the highest percentage of MDR and HRMO profiles. The prevalence of the extended-spectrum beta-lactamases (ESBL)-producing isolates was 83.13% in E. coli, 78.84% in Klebsiella pneumoniae, and 66.67% in Proteus mirabilis, respectively. Conclusions: The high resistance rates to drugs were exhibited by our GNB isolates. Continuous surveillance and control of the use of antimicrobials are urgently needed to reduce the emergence and spreading of MDR, HRMO, and/or ESBL-producing bacilli.

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