scholarly journals An evaluation of six-year Stenotrophomonas maltophilia infections in a university hospital

2020 ◽  
Vol 20 (3) ◽  
pp. 1118-1123
Author(s):  
Nevin Ince ◽  
Dilek Yekenkurul ◽  
Ayşe Danış ◽  
Emel Çalışkan ◽  
İdris Akkaş

Background: Stenotrophomonas maltophilia is a Gram-negative bacillus and opportunistic emergent pathogen causing hospi- tal-acquired infections (HAIs). Due to risk factors such as prolonged intensive care unit stay and invasive procedures, it has become one of the leading causes of HAIs. Objective: The aim of this study was to evaluate the epidemiology of S.maltophilia infections over a six-year period at Düzce University Hospital, Turkey. Methods: The incidence, clinical characteristics, antimicrobial susceptibility and outcomes of nosocomial S. maltophilia in- fections during this period were retrospectively analyzed. Results: During the study period, 67 samples obtained from 61 patients were identified. Pneumonias (82%) were the most common HAIs, followed by bloodstream infections (10.5%), urinary tract infections (3%), skin and soft tissue infections (3%) and surgical site infection (1.5%). Admission to intensive care, hospitalization exceeding 30 days, and previous use of broad-spectrum antibiotics constituted risk factors. Resistance to cotrimoxazole (6%) was lower than that to levofloxacin (18%). Conclusion: The most important risk factors for S.maltophilia infection in patients are previous exposure to antibiotics, pro- longed hospitalization and invasive procedures such as mechanic ventilation. Discharging patients as early as possible with the rational use of antibiotics may be effective in reducing S. maltophilia infections and resistance rates. Keywords: Stenotrophomonas maltophilia; hospital-acquired infections; epidemiology; risk factors.

Author(s):  
Hela Ghali ◽  
Asma Ben Cheikh ◽  
Sana Bhiri ◽  
Selwa Khefacha ◽  
Houyem Said Latiri ◽  
...  

Background Although efforts to manage coronavirus disease 2019 (COVID-19) pandemic have understandably taken immediate priority, the impacts on traditional healthcare-associated infection (HAI) surveillance and prevention efforts remain concerning. Aim To describe trends in HAIs in a Tunisian university hospital through repeated point prevalence surveys over 9 years, assess the impact of measures implemented for COVID-19 pandemic, and to identify associated factors of HAI. Methods The current study focused on data collected from annual point prevalence surveys conducted from 2012 to 2020. All types of HAIs as defined by the Centers for Disease Control and Prevention (CDC) were included. Data collection was carried out using NosoTun plug. Univariate and multivariate logistic analysis were used to identify HAI risk factors. Results Overall, 2729 patients were observed in the 9 surveys; the mean age was 48.3 ± 23.3 years and 57.5% were male. We identified 267 infected patients (9.8%) and 296 HAIs (10.8%). Pneumonia/lower respiratory tract infections were the most frequent HAI (24%), followed by urinary tract infection (20.9%).The prevalence of infected patients increased from 10.6% in 2012 to 14.9% in 2020. However, this increase was not statistically significant. The prevalence of HAIs increased significantly from 12.3% to 15.5% ( P =.003). The only decrease involved is bloodstream infections (from 2% to 1%). Independent risk factors significantly associated with HAI were undergoing surgical intervention (aOR = 1.7), the use of antibiotic treatment in previous 6 months (aOR = 1.8), peripheral line (aOR=2), parenteral nutrition (aOR=2.4), urinary tract within 7 days (aOR=2.4), central line (aOR = 6.3), and prosthesis (aOR = 12.8), length of stay (aOR = 3), and the year of the survey. Young age was found as protective factor (aOR = .98). Conclusion Contrary to what was expected, we noticed an increase in the HAIs rates despite the preventive measures put in place to control the COVID-19 pandemic. This was partly explained by the vulnerability of hospitalized patients during this period.


2014 ◽  
Vol 71 (2) ◽  
pp. 131-136
Author(s):  
Ivana Milosevic ◽  
Milos Korac ◽  
Goran Stevanovic ◽  
Djordje Jevtovic ◽  
Branko Milosevic ◽  
...  

Bacground/Aim. Nosocomial infections (NIs) are an important cause of morbidity, mortality and prolonged hospitalizations. Fifty percent of NIs have been reported in Intensive Care Units. The aim of this study was to determine the frequency and type of NIs among critically ill patients treated in the University Hospital for Infectious and Tropical Diseases, Clinical Centre of Serbia, as well as risk factors for acquiring them. Methods. This prospective cohort study included 52 patients treated in the Intensive Care Unit from January to June 2004. The diagnosis of NI was established according to the Centers for Disease Control and Prevention (CDC) definition, based on clinical presentation, radiological and microbiological findings, etc. Statistical data processing was done by using the electronic data base organized in SPSS for Windows version 10.0. The level of statistical significance was defined as p < 0. 05. Results. NIs were found in 33 (63.4%) of 52 inpatients. Urinary tract infections (UTIs), pneumonia, and soft tissue infections, the most common nosocomial infections in our setting, were recorded in 41.0%, 25.6%, and 23.1%, of patients, respectively. Several factors contributed to a high incidence of these infections: chronic comorbidities (p < 0.01), the presence of indwelling devices such as urinary tract catheters (p < 0.01), endotracheal tubes (p < 0.05) along with mechanical ventilation (p < 0.05). Conclusion. The majority of patients with NIs had chronic underlying comorbidities. All the patients with UTIs had urinary catheters. The most important risk factors for the development of nosocomial pneumonias were endotracheal intubation and mechanical ventilation. The patients with pneumonia had the highest mortality.


Open Medicine ◽  
2010 ◽  
Vol 5 (2) ◽  
pp. 203-208 ◽  
Author(s):  
Burcin Ozer ◽  
Muserref Tatman-Otkun ◽  
Dilek Memis ◽  
Metin Otkun

AbstractThe aim of this study was to determine the types nosocomial infections (NIs) and the risk factors for NIs in the central intensive care unit (ICU) of Trakya University Hospital. The patients admitted to the ICU were observed prospectively by the unit-directed active surveillance method based on patient and the laboratory over a 9-month-period. The samples of urine, blood, sputum or tracheal aspirate were taken from the patients on the first and the third days of their hospitalization in ICU; the patients were cultured routinely. Other samples were taken and cultured if there was suspicion of an infection. Infections were considered as ICU-associated if they developed after 48 hours of hospitalization in the unit and 5 days after discharge from the unit if the patients had been sent to a different ward in the hospital. The rate of NIs in 135 patients assigned was found to be 68%. The most common infection sites were lower respiratory tract, urinary tract, bloodstream, catheter site and surgical wound. Hospitalization in ICU for more than 6 days and colonization was found to be the main risk factor for NIs. Prolonged mechanical ventilation and tracheostomy, as well as frequently changed nasogastric catheterization, were found to be risk factors for lower respiratory tract infections. For bloodstream infections, both prolonged insertion of and frequent change of arterial catheters, and for urinary tract infections, female gender, period and repeating of urinary catheterization were risk factors. A high prevalence rate of nosocomial infections was found in this study. Invasive device use and duration of use continue to greatly influence the development of nosocomial infection in ICU. Important factors to prevent nosocomial infections are to avoid long hospitalization and unnecessary device application. Control and prevention strategies based on continuing education of healthcare workers will decrease the nosocomial infections in the intensive care unit.


Antibiotics ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 1146
Author(s):  
Aleksa Despotovic ◽  
Branko Milosevic ◽  
Andja Cirkovic ◽  
Ankica Vujovic ◽  
Ksenija Cucanic ◽  
...  

Hospital-acquired infections (HAIs) are a global public health concern. As the COVID-19 pandemic continues, its contribution to mortality and antimicrobial resistance (AMR) grows, particularly in intensive care units (ICUs). A two-year retrospective study from April 2019–April 2021 was conducted in an adult ICU at the Hospital for Infectious and Tropical Diseases, Belgrade, Serbia to assess causative agents of HAIs and AMR rates, with the COVID-19 pandemic ensuing halfway through the study. Resistance rates >80% were observed for the majority of tested antimicrobials. In COVID-19 patients, Acinetobacter spp. was the dominant cause of HAIs and more frequently isolated than in non-COVID-19 patients. (67 vs. 18, p = 0.001). Also, resistance was higher for imipenem (56.8% vs. 24.5%, p < 0.001), meropenem (61.1% vs. 24.3%, p < 0.001) and ciprofloxacin (59.5% vs. 36.9%, p = 0.04). AMR rates were aggregated with findings from our previous study to identify resistance trends and establish empiric treatment recommendations. The increased presence of Acinetobacter spp. and a positive trend in Klebsiella spp. resistance to fluoroquinolones (R2 = 0.980, p = 0.01) and carbapenems (R2 = 0.963, p = 0.02) could have contributed to alarming resistance rates across bloodstream infections (BSIs), pneumonia (PN), and urinary tract infections (UTIs). Exceptions were vancomycin (16.0%) and linezolid (2.6%) in BSIs; tigecycline (14.3%) and colistin (0%) in PNs; and colistin (12.0%) and linezolid (0%) in UTIs. COVID-19 has changed the landscape of HAIs in our ICUs. Approval of new drugs and rigorous surveillance is urgently needed.


2019 ◽  
Author(s):  
Aleksa Jovan Despotovic ◽  
Branko Milosevic ◽  
Ivana Milosevic ◽  
Andja Cirkovic ◽  
Snezana D Jovanovic ◽  
...  

Abstract Background: Hospital-acquired infections are a major complication of hospital treatment. The growing presence of multidrug-resistant pathogens contributes to increased mortality and costs, particularly in intensive care units where patients are predisposed to numerous risk factors. Comprehensive data about hospital-acquired infections from Serbian intensive care units is scarce. The aim of this study was to determine the presence of hospital-acquired infections among intensive care unit patients and look into the patterns of antimicrobial resistance, risk factors, and incremental costs of diagnosis and antimicrobial treatment. Methods: This retrospective study included 355 patients over a two-year period. Etiology, antimicrobial resistance patterns, and incremental costs of diagnosis and antimicrobial treatment were examined. Risk factors for infection acquisition, as well as length of stay, were statistically analyzed using Pearson’s chi-square tests and logistic regression analysis. Results: At least one hospital-acquired infection was identified in 32.7% of patients. A total of 204 infection episodes were documented, the most common type being urinary tract infections (36.3%). Clostridium difficile , Klebsiella spp. , and Acinetobacter baumanii were the most common isolates. Antimicrobial resistance rates < 20% were observed for linezolid (0%), colistin (9%), and tigecycline (14%). Resistance rates > 50% were seen in all other tested antibiotic agents. Mortality rates were not higher in patients who acquired only one hospital-acquired infection (p=0.09), but were significantly higher for patients in whom more than one episode occurred (p=0.038). Length of stay > 20 days carried a 7.5-fold increase in odds of acquiring an infection (CI 4.4-12.7, p<0.001), whereas length of stay > 30 days carried a 10-fold increase (CI 5.5-16.1, p<0.001). During the study period, over 37,000 EUR was incrementally spent on diagnosis and antimicrobial treatment for hospital-acquired infections. Conclusion: Our results suggest a high prevalence of hospital-acquired infections and very high antimicrobial resistance rates compared to most European countries. Together with the first published results regarding incremental costs from Serbia, our observations require large-scale prospective follow-up studies in order to obtain a deeper insight into the actual burden of hospital-acquired infections.


2013 ◽  
Vol 29 (6) ◽  
pp. 311-326 ◽  
Author(s):  
Sumanth Gandra ◽  
Richard T. Ellison

Hospital-acquired infections (HAIs) are common in intensive care unit (ICU) patients and are associated with increased morbidity and mortality. There has been an increasing effort to prevent HAIs, and infection control practices are paramount in avoiding these complications. In the last several years, numerous developments have been seen in the infection prevention strategies in various health care settings. This article reviews the modern trends in infection control practices to prevent HAIs in ICUs with a focus on methods for monitoring hand hygiene, updates in isolation precautions, new methods for environmental cleaning, antimicrobial bathing, prevention of ventilator-associated pneumonia, central line-associated bloodstream infections, catheter-associated urinary tract infections, and Clostridium difficile infection.


Author(s):  
Gökçe Kader Aslan ◽  
Fatma Esenkaya Taşbent ◽  
Metin Doğan

Objective: Stenotrophomonas maltophilia is an opportunistic pathogen that frequently causes nosocomial infections in recent years. It is generally isolated from respiratory tract samples, blood, urine and drainage materials. Due to multiple antibiotic resistance, a limited number of antibiotics are used in the treatment of these infections. The aim of this study is to investigate the antibiotic resistance status and risk factors in isolated S. maltophilia strains. Method: Diversity and antibiotic susceptibility levels of S. maltophilia strains isolated from various clinical samples between January 2018 and June 2020 were examined using conventional methods and VITEK2 automated system. Demographic and diagnostic data of the patients were retrieved from the hospital’s data base to identify the risk factors of infection. Results: Of the 300 strains examined, 46% were isolated from intensive care units, 35.3% from patients hospitalized in other clinics, and 18.7% from outpatient clinic patients. It was observed that 64 (21.3%) of 300 patients were immunosuppressed. Trimethoprim-sulfamethoxazole resistance was 1.3% and levofloxacin resistance was 0.7%. Conclusion: Resistance rates were found to be lower than the literature data in the study. It was concluded that hospitalization in the intensive care unit and immunosuppression are important risk factors for S. maltophilia infections.


2017 ◽  
Vol 46 (1) ◽  
pp. 16 ◽  
Author(s):  
Sunil Kumar Yadav ◽  
Shankar Prasad Yadav ◽  
Nisha Keshary Bhatta ◽  
Piush Kanodia ◽  
Rupa Rajbhandari Singh ◽  
...  

2014 ◽  
Vol 8 (01) ◽  
pp. 044-049 ◽  
Author(s):  
Murat Dizbay ◽  
Ozlem Guzel Tunccan ◽  
Omer Karasahin ◽  
Firdevs Aktas

Introduction:Risk factors for nosocomial carbapenem-resistant Klebsiella spp. (CRK) infections were analyzed in this study.Methodology:The incidence, clinical characteristics, risk factors, antimicrobial susceptibility, and outcomes of CRK infections during a seven-year period (2004-2010) were retrospectively analyzed.Results:A total of 720 patients were included in the study. Carbapenem resistance among Klebsiella spp. were significantly increased between 2003 and 2007 (p<0.001). CRK strains were mostly isolated from ICUs (p<0.001). Use of imipenem and cefoperazone-sulbactam within prior three months, stay in ICU, receiving immunspressive therapy, receiving H2 receptor antagonists, tracheostomy, mechanical ventilation, hemodialysis, urinary catheter were found to be significant risk factors for carbapenem resistance Klebsiella spp. infections. In a multivariate analysis, prior use of imipenem (OR 3.35; CI 1.675-6.726, p<0.001), stay in ICU (OR 3.36; 95% CI 1.193-9.508; p=0.022), receiving H2 receptor antagonist (OR 4.49; 95% CI 1.011-19.951; p=0.048) were independently associated with carbapenem resistance. Respiratory tract infections were the most seen nosocomial infection. Attack mortality rate was significantly higher in patients infected with CRK strains (p<0.001). CRK strains showed significantly higher resistance rates to other antibiotics.Conclusions:In conclusion, the emergence and rapid spread of CRK strains in our hospital is worrisome. The patients in ICU are most important risk group for the acquisition of CRK strains. High resistant rates to other antibiotics except than colistin and tigecycline limits therapeutic options, and increases mortality rates.


2016 ◽  
pp. 39-43
Author(s):  
Dinh Binh Tran ◽  
Dinh Tan Tran

Objective: To study nosocomial infections and identify the main agents causing hospital infections at Hue University Hospital. Subjects and Methods: A cross-sectional descriptive study of 385 patients with surgical interventions. Results: The prevalence of hospital infections was 5.2%, surgical site infection was the most common (60%), followed by skin and soft tissue infections (35%), urinary tract infections (5%). Surgical site infection (11.6%) in dirty surgery. There were 3 bacterial pathogens isolated, including Staphylococcus aureus (50%), Pseudomonas aeruginosa and Enterococcusspp (25%). Conclusion: Surgical site infection was high in hospital-acquired infections. Key words: hospital infections, surgical intervention, surgical site infection, bacteria


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