scholarly journals A retrospective study of risk factors for carbapenem-resistant Klebsiella pneumoniae acquisition among ICU patients

2016 ◽  
Vol 10 (03) ◽  
pp. 208-213 ◽  
Author(s):  
Yangmin Hu ◽  
Yanting Ping ◽  
Leiqing Li ◽  
Huimin Xu ◽  
Xiaofeng Yan ◽  
...  
Keyword(s):  
Risk Factors ◽  
Risk Factor ◽  
Klebsiella Pneumoniae ◽  
Independent Risk Factor ◽  
Tertiary Care ◽  
Antibiotic Use ◽  
Clinical Factor ◽  
Icu Patients ◽  
Carbapenem Resistant ◽  
Bivariable Analysis

Introduction: Carbapenem-resistant Klebsiella pneumoniae (CRKP) is rapidly emerging as a life-threatening nosocomial infection. In this study, we aim to identify risk factors, especially antibiotic use, for CRKP infection among intensive care unit (ICU) patients. Methodology: This was a matched case-control study of a 67-bed ICU in a tertiary care teaching hospital from 1 January 2011 through 30 June 2013. The control cases were selected among the patients with carbapenem-susceptible Klebsiella pneumoniae (CSKP) and were matched with CRKP cases for year of ICU admission and site of infection. The clinical outcomes and antibiotic treatments were analyzed. Results: One hundred and thirty patients were included in the study (65 cases and 65 controls). Bivariable analysis showed that age of patients (p = 0.044), number of antibiotic groups (p = 0.001), and exposure to carbapenems (p < 0.001) were associated with CRKP infection. Using multivariate analysis adjusted for age, prior hospitalization, number of antibiotic groups, and previous exposure to carbapenems, previous carbapenem exposure (p < 0.001) was identified as an independent risk factor for CRKP infection. Conclusions: These data suggest that exposure to carbapenems is an independent risk factor for CRKP infection. Patients with this clinical factor should be targeted for interventions to reduce the subsequent risk of infection.

Outbreak of Carbapenem-Resistant Klebsiella pneumoniae in Puerto Rico Associated with a Novel Carbapenemase Variant

2010 ◽  
Vol 31 (05) ◽  
pp. 476-484 ◽  
Author(s):  
Christopher J. Gregory ◽  
Eloisa Llata ◽  
Nicholas Stine ◽  
Carolyn Gould ◽  
Luis Manuel Santiago ◽  
...  
Keyword(s):  
Risk Factors ◽  
Puerto Rico ◽  
Klebsiella Pneumoniae ◽  
Antimicrobial Agents ◽  
Tertiary Care ◽  
Multivariable Analysis ◽  
Control Measures ◽  
Control Group ◽  
Surveillance Culture ◽  
Carbapenem Resistant

Background.Carbapenem-resistantKlebsiella pneumoniae(CRKP) is resistant to almost all antimicrobial agents, and CRKP infections are associated with substantial morbidity and mortality.Objective.To describe an outbreak of CRKP in Puerto Rico, determine risk factors for CRKP acquisition, and detail the successful measures taken to control the outbreak.Design.Two case-control studies.Setting.A 328-bed tertiary care teaching hospital.Patients.Twenty-six CRKP case patients identified during the outbreak period of February through September 2008, 26 randomly selected uninfected control patients, and 26 randomly selected control patients with carbapenem-susceptibleK. pneumoniae(CSKP) hospitalized during the same period.Methods.We performed active case finding, including retrospective review of the hospital's microbiology database and prospective perirectal surveillance culture sampling in high-risk units. Case patients were compared with each control group while controlling for time at risk. We sequenced theblaKPCgene with polymerase chain reaction for 7 outbreak isolates and subtyped these isolates with pulsed-field gel electrophoresis.Results.In matched, multivariable analysis, the presence of wounds (hazard ratio, 19.0 [95% confidence interval {CI}, 2.5-142.0]) was associated with CRKP compared with noK. pneumoniae.Transfer between units (adjusted odds ratio [OR], 7.5 [95% CI, 1.8-31.1]), surgery (adjusted OR, 4.0 [95% CI, 1.0-15.7]), and wounds (adjusted OR, 4.9 [95% CI, 1.1-21.8]) were independent risk factors for CRKP compared to CSKP. A novelK. pneumoniaecarbapenemase variant (KPC-8) was present in 5 isolates. Implementation of active surveillance for CRKP colonization and cohorting of CRKP patients rapidly controlled the outbreak.Conclusions.Enhanced surveillance for CRKP colonization and intensified infection control measures that include limiting the physical distribution of patients can reduce CRKP transmission during an outbreak.

scholarly journals Antibiotic resistance in isolates recovered from women with community-acquired urinary tract infections presenting to a tertiary care emergency department

CJEM ◽  
2012 ◽  
Vol 14 (05) ◽  
pp. 295-305 ◽  
Author(s):  
Lyne Filiatrault ◽  
Rachel M. McKay ◽  
David M. Patrick ◽  
Diane L. Roscoe ◽  
Grahame Quan ◽  
...  
Keyword(s):  
Risk Factors ◽  
Emergency Department ◽  
Antibiotic Resistance ◽  
Risk Factor ◽  
Urinary Tract ◽  
Urinary Tract Infections ◽  
Tertiary Care ◽  
Antibiotic Use ◽  
Adult Females ◽  
Tract Infections

ABSTRACTIntroduction:We sought to determine the antibiotic susceptibility of organisms causing community-acquired urinary tract infections (UTIs) in adult females attending an urban emergency department (ED) and to identify risk factors for antibiotic resistance.Methods:We reviewed the ED charts of all nonpregnant, nonlactating adult females with positive urine cultures for 2008 and recorded demographics, diagnosis, complicating factors, organism susceptibility, and risk factors for antibiotic resistance. Odds ratios (ORs) and 95% confidence intervals (CIs) for potential risk factors were calculated.Results:Our final sample comprised 327 UTIs: 218 were cystitis, of which 22 were complicated cases and 109 were pyelonephritis, including 22 complicated cases.Escherichia coliaccounted for 82.3% of all UTIs, whereasStaphylococcus saprophyticusaccounted for 5.2%. In uncomplicated cystitis, 9.5% of all isolates were resistant to ciprofloxacin and 24.0% to trimethoprim-sulfamethoxazole (TMP-SMX). In uncomplicated pyelonephritis, 19.5% of isolates were resistant to ciprofloxacin and 36.8% to TMP-SMX. In UTI (all types combined), any antibiotic use within the previous 3 months was a significant risk factor for resistance to both ciprofloxacin (OR 3.34, 95% CI 1.16–9.62) and TMP-SMX (OR 4.02, 95% CI 1.48–10.92). Being 65 years of age or older and having had a history of UTI in the previous year were risk factors only for ciprofloxacin resistance.Conclusions:E. coliwas the predominant urinary pathogen in this series. Resistance to ciprofloxacin and TMP-SMX was high, highlighting the importance of relevant, local antibiograms. Any recent antibiotic use was a risk factor for both ciprofloxacin and TMP-SMX resistance in UTI. Our findings should be confirmed with a larger prospective study.

scholarly journals Prevalence and Risk Factors of Metallo β-lactamase Producing Pseudomonas aeruginosa and Acinetobacter species in Burns and Surgical Wards in a Tertiary Care Hospital

2012 ◽  
Vol 4 (01) ◽  
pp. 039-042 ◽  
Author(s):  
Simit H Kumar ◽  
Anuradha S De ◽  
Sujata M Baveja ◽  
Madhuri A Gore
Keyword(s):  
Risk Factors ◽  
Pseudomonas Aeruginosa ◽  
Tertiary Care ◽  
Significant Risk ◽  
Antibiotic Use ◽  
Multidrug Resistant ◽  
Resistance Mechanisms ◽  
Care Hospital ◽  
Acinetobacter Species ◽  
Carbapenem Resistant

ABSTRACT Introduction: The production of Metallo-β-lactamases (MBLs) is one of the resistance mechanisms of Pseudomonas aeruginosa and Acinetobacter species. There is not much Indian data on the prevalence of MBLs in burns and surgical wards. Materials and Methods: A total of 145 non-duplicate isolates of carbapenem-resistant Pseudomonas aeruginosa and Acinetobacter species, isolated from pus/wound swabs and endotracheal secretions from burns and surgical wards, were tested for MBL production by modified ethylene diamine tetra acetic acid (EDTA) disc synergy and double disc synergy tests. Results: Prevalence of MBLs was 26.9% by both the above tests. All MBL-positive isolates were multidrug resistant. Only 6.06% (2/33) P.aeruginosa and 16.67% (1/06) Acinetobacter species were susceptible to piperacillin-tazobactam and netilmycin, respectively. These patients had multiple risk factors like >8 days hospital stay, catheterization, IV lines, previous antibiotic use, mechanical ventilation, etc. Graft application and surgical intervention were significant risk factors in MBL-positive patients. Overall mortality in MBL-positive patients was 34.21%. Conclusion: Emergence of MBL-producing Pseudomonas aeruginosa and Acinetobacter species in this hospital is alarming, which reflect excessive use of carbapenems and at the same time, pose a therapeutic challenge to clinicians as well as to microbiologists. Therefore, a strict antibiotic policy and implementation of proper infection control practices will go a long way to prevent further spread of MBLs. Detection of MBLs should also become mandatory in all hospitals.

Reduced Use of Third-Generation Cephalosporins Decreases the Acquisition of Extended-Spectrum Beta-Lactamase-ProducingKlebsiella pneumoniae

2004 ◽  
Vol 25 (10) ◽  
pp. 832-837 ◽  
Author(s):  
Sang-Oh Lee ◽  
Eun Sun Lee ◽  
Shin Young Park ◽  
Sue-Yun Kim ◽  
Yiel-Hae Seo ◽  
...  
Keyword(s):  
Risk Factors ◽  
Risk Factor ◽  
Independent Risk Factor ◽  
Tertiary Care ◽  
Prior Exposure ◽  
Third Generation ◽  
Beta Lactamase ◽  
Extended Spectrum Beta Lactamase ◽  
Extended Spectrum ◽  
Third Generation Cephalosporins

AbstractObjectives:To identify risk factors for the respiratory acquisition of extended-spectrum beta-lactamase (ESBL)-producingKlebsiella pneumoniaeamong patients admitted to a neurosurgical intensive care unit (NSICU) and to modify them without changing general infection control measures.Design:Nested case-control and intervention study.Setting:A 1,200-bed, tertiary-care teaching hospital with a 17-bed NSICU.Methods:Sputa of all patients admitted to the NSICU were cultured weekly during the study. From October 2002 through February 2003, 29 case-patients from whose sputum ESBL-producingK. pneumoniaewas isolated were detected and 59 controls-patients were randomly selected among patients without any positive isolate of ESBL-producingK. pneumoniae.After analyzing the risk factors, we intervened to modify them and compared the acquisition rate of ESBL-producingK. pneumoniaebefore (October 2002 to February 2003) and after (April to August 2003) the intervention.Results:Multivariate analysis showed that prior exposure to third-generation cephalosporins (TGCs) (OR, 6.0; CI95, 1.9 to 18.6;P= .002) was an independent risk factor of ESBL-producingK. pneumoniaeacquisition. The neurosurgical team was notified of the result, and the infectious diseases specialist visited the NSICU three times a week to regulate TGC use during the intervention period. Patients admitted before the intervention were older than patients admitted after. The respiratory acquisition of ESBL-producingK. pneumoniaeper 1,000 patient-days (13.5 [CI95, 8.9 to 18.1] vs 2.7 [CI95, 0.9 to 4.6]) and the antimicrobial use density of TGCs (38.2 ± 5.0 vs 17.3 ± 2.6;P< .001) decreased significantly after the intervention.Conclusion:Prior exposure to TGCs was an independent risk factor for the respiratory acquisition of ESBL-producingK. pneumoniae,and less use of TGCs was associated with a decrease in acquisition.

scholarly journals Risk factors for infection with carbapenem-resistant Klebsiella pneumoniae: a case-case-control study

2014 ◽  
pp. 54-60 ◽  
Author(s):  
Viviana Gómez Rueda ◽  
John Jairo Zuleta Tobón
Keyword(s):  
Risk Factors ◽  
Klebsiella Pneumoniae ◽  
Case Control Study ◽  
Conditional Logistic Regression ◽  
Tertiary Care ◽  
Case Control ◽  
Carbapenem Resistant ◽  
Group I ◽  
Tertiary Care Institution ◽  
Control Study

Objetive: To evaluate the association between quinolone exposure and the emergence of carbapenem-resistant Klebsiella pneumoniae (CRKP) and to estimate CRKP-specific mortality. Methods: Case-case-control study implemented in a tertiary care institution. Three groups of patients were analyzed: 61 consecutive cases of infection with CRKP (Group I); 61 randomly chosen cases of patients infected with carbapenem-sensitive Klebsiella pneumoniae (CSKP; Group II); and 122 randomly chosen controls without CRKP or CSKP infection. Matching was based on the length of stay in intensive care unit and the date of bacterial isolation. An active search was performed for patients with CRKP and CSKP infection, and prospective cases were included in the study. We compared the results for Groups I and II against those for the controls by using two conditional logistic regression analyses that included infection as the dependent variable and controlled for time at risk and co-morbidities. Results: Exposure to quinolones was not associated with CRKP infection: no association was found in the analysis of CRKP with the controls (OR= 1.7; 95% CI: 0.2-6.5) or in the analysis of CSKP against the controls (OR= 0.6; 95% CI: 0.2-1.6). Use of carbapenems (OR = 3.3; 95% CI: 1.2-9.3) and colonization with CRKP (OR = 3.3; 95% IC: 1.2-9.3) were specific risk factors for infection with CRKP. Mortality associated with CRKP was 61.3%. Conclusion: No association was found between exposure to quinolones and infection with CRKP; however, colonization by CRKP and use of carbapenems are risk factors for infection with CRKP.

scholarly journals Carbapenem resistant Acinetobacter Species infection in intensive care unit: The outcome and risk factors of mortality

2019 ◽  
Vol 19 (1) ◽  
pp. 98-104
Author(s):  
Wan Mohd Nazaruddin Wan Hassan ◽  
Mohd Samsul Puzizer ◽  
Zakuan Zaini Deris ◽  
Rhendra Hardy Mohamed Zaini
Keyword(s):  
Risk Factors ◽  
Intensive Care Unit ◽  
Risk Factor ◽  
Intensive Care ◽  
Independent Risk Factor ◽  
Significant Risk ◽  
Icu Mortality ◽  
Acinetobacter Species ◽  
Carbapenem Resistant ◽  
Acinetobacter Spp

Objective: Acinetobacter spp. infection is a challenging problem in intensive care unit (ICU) because of its multi-drug resistant (MDR) in nature to antibiotic therapy including broadspectrum carbapenem group. The aims of the study were to determine the risk factors of mortality and the outcome of carbapenem-resistant Acinetobacter spp. (CRAs) infection in our ICU. Materials and Method: This is a retrospective, cross-sectional study, done in 2 years from January 2008 to December 2009. The list of the patients was obtained from hospital nosocomial infection surveillance unit and ICU infection record. The data of the patients were subsequently reviewed from their respective medical records after approval from university ethics committee and hospital medical record unit. Results and Discussion: A total of 92 patients were reviewed and only 54 were included and analyzed. The prevalence of CRAs over 24 months was 7.3%. Mortality was 50% among the reviewed patients and this contributed 13.6 % of the total ICU mortality. Age was significantly different between survival and non-survival groups; 43.07 (21.09) vs. 57.04 ± 14.33 year old (p = 0.006). Age was also the only significant independent risk factor associated with mortality in CRAs (adjusted OR = 1.045, 95% CI: 1.010, 1.081, p = 0.011). There were no other significant risk factors. The length of ICU stay was 17.00 (13.58) days whereas length of hospital stay was 41.37 (27.66) days in survival group. Conclusion: CRAs caused 13.6% of total ICU mortality and older age group was the independent risk factor for mortality. Bangladesh Journal of Medical Science Vol.19(1) 2020 p.98-104

Evaluation of Hospital Room Assignment and Acquisition of Clostridium difficile Infection

2011 ◽  
Vol 32 (3) ◽  
pp. 201-206 ◽  
Author(s):  
Megan K. Shaughnessy ◽  
Renee L. Micielli ◽  
Daryl D. DePestel ◽  
Jennifer Arndt ◽  
Cathy L. Strachan ◽  
...  
Keyword(s):  
Risk Factors ◽  
Risk Factor ◽  
Clostridium Difficile ◽  
Tertiary Care ◽  
Significant Risk ◽  
Extended Period ◽  
Significant Risk Factor ◽  
Antibiotic Use ◽  
Care Hospital ◽  
Icu Discharge

Background and Objective.Clostridium difficile spores persist in hospital environments for an extended period. We evaluated whether admission to a room previously occupied by a patient with C. difficile infection (CDI) increased the risk of acquiring CDI.Design.Retrospective cohort study.Setting.Medical intensive care unit (ICU) at a tertiary care hospital.Methods.Patients admitted from January 1, 2005, through June 30, 2006, were evaluated for a diagnosis of CDI 48 hours after ICU admission and within 30 days after ICU discharge. Medical, ICU, and pharmacy records were reviewed for other CDI risk factors. Admitted patients who did develop CDI were compared with admitted patients who did not.Results.Among 1,844 patients admitted to the ICU, 134 CDI cases were identified. After exclusions, 1,770 admitted patients remained for analysis. Of the patients who acquired CDI after admission to the ICU, 4.6% had a prior occupant without CDI, whereas 11.0% had a prior occupant with CDI (P = .002). The effect of room on CDI acquisition remained a significant risk factor (P = .008) when Kaplan-Meier curves were used. The prior occupant's CDI status remained significant (P = .01; hazard ratio, 2.35) when controlling for the current patient's age, Acute Physiology and Chronic Health Evaluation III score, exposure to proton pump inhibitors, and antibiotic use.Conclusions.A prior room occupant with CDI is a significant risk factor for CDI acquisition, independent of established CDI risk factors. These findings have implications for room placement and hospital design.

scholarly journals Clinical and Bacterial Characteristics of Klebsiella pneumoniae Affecting 30-Day Mortality in Patients With Bloodstream Infection

2021 ◽  
Vol 11 ◽  
Author(s):  
Xingbing Wu ◽  
Qingyi Shi ◽  
Shimo Shen ◽  
Chen Huang ◽  
Hongcheng Wu
Keyword(s):  
Risk Factors ◽  
Risk Factor ◽  
Klebsiella Pneumoniae ◽  
Bloodstream Infection ◽  
High Mortality ◽  
Virulence Genes ◽  
Genomic Analysis ◽  
Apache Ii Score ◽  
Comparative Genomic ◽  
Carbapenem Resistant

BackgroundThere is a paucity of studies using clinical characteristics and whole-genome sequencing together to fully identify the risk factors of patients with Klebsiella pneumoniae (KP) bloodstream infection (BSI).MethodsWe retrospectively analyzed the clinical and microbiological characteristics of patients with KP BSI. Isolates were processed using Illumina NGS, and relevant bioinformatics analysis was conducted (multi-locus sequence typing, serotype, phylogenetic reconstruction, detection of antibiotic resistance, and virulence genes). A logistic regression model was used to evaluate the risk factors of hosts and causative KP isolates associated with 30-day mortality in patients infected with KP BSI.ResultsOf the 79 eligible patients, the 30-day mortality rate of patients with KP BSI was 30.4%. Multivariate analysis showed that host-associated factors (increased APACHE II score and septic shock) were strongly associated with increased 30-day mortality. For the pathogenic factors, carriage of iutA (OR, 1.46; 95% CI, 1.11–1.81, p = 0.002) or Kvar_1549 (OR, 1.31; 95% CI, 1.02–1.69, p = 0.043) was an independent risk factor, especially when accompanied by a multidrug-resistant phenotype. In addition, ST11-K64 hypervirulent carbapenem-resistant KP co-harbored acquired blaKPC-2 together with iutA (76.5%, 13/17) and Kvar_1549 (100%, 17/17) genes. Comparative genomic analysis showed that they were clustered together based on a phylogenetic tree, and more virulence genes were observed in the group of ST11-K64 strains compared with ST11-non-K64. The patients infected with ST11-K64 strains were associated with relatively high mortality (47.2%, 7/17).ConclusionThe carriage of iutA and Kvar_1549 was seen to be an independent mortality risk factor in patients with KP BSI. The identification of hypervirulent and carbapenem-resistant KP strains associated with high mortality should prompt surveillance.

The Colonization of Carbapenem-Resistant Klebsiella pneumoniae: Epidemiology, Resistance Mechanisms, and Risk Factors in Patients Admitted to Intensive Care Units in China

2020 ◽  
Vol 221 (Supplement_2) ◽  
pp. S206-S214 ◽  
Author(s):  
Xiaohua Qin ◽  
Shi Wu ◽  
Min Hao ◽  
Jing Zhu ◽  
Baixing Ding ◽  
...  
Keyword(s):  
Risk Factors ◽  
Intensive Care ◽  
Klebsiella Pneumoniae ◽  
Consensus Sequence ◽  
Resistance Mechanisms ◽  
Transmitted Infection ◽  
Icu Patients ◽  
Icu Stay ◽  
Carbapenem Resistant ◽  
Increased Risk

Abstract Background Carbapenem-resistant Klebsiella pneumoniae (CRKP) has become a threat to public health, most notably as a superbug causing nosocomial infections. Patients in the intensive care unit (ICU) are at increased risk of hospital-acquired K pneumoniae infection, especially CRKP. This study was conducted to investigate the frequency of gastrointestinal and nasopharyngeal K pneumoniae colonization and its contribution to infections in ICU patients. Methods A 3-month prospective cohort study was performed in which 243 ICU patients were screened for intestinal and nasopharyngeal carriage of K pneumoniae at admission and once per week thereafter. The colonization and clinical infection isolates were analyzed by antimicrobial susceptibility testing to identify CRKP and were characterized by multilocus sequence typing (MLST) and whole-genome sequencing combined with epidemiological data to investigate the resistance mechanisms and assess the possible transmitted infection. Results Twenty-eight percent (68 of 243) of patients tested positive for carriage of K pneumoniae immediately upon admission to ICU, 54% (37 of 68) of which were nonduplicate CRKP isolates. Patients with carbapenem-susceptible K pneumoniae (CSKP) colonization at admission were more likely to acquire CRKP colonization during the ICU stay compared with patients without K pneumoniae colonization at admission. The incidence of subsequent CRKP infection in the baseline CSKP (32.3%, 10 of 31) and CRKP (45.9%, 17 of 37) carrier group was significantly higher than that of the baseline non-KP carrier group (8.6%, 15 of 175). The risk factors associated with acquired CRKP colonization during the ICU stay among negative CRKP colonization at admission included previous exposure to carbapenem, tigecycline or β-lactam/β-lactamases inhibitor, and invasive processes or surgical operations. Sixty-four percent (27 of 42) of patients with K pneumoniae infection were colonized by clonally related K pneumoniae strains according to enterobacterial repetitive intergenic consensus sequence-polymerase chain reaction analysis. ST11 (72%, 53 of 74) was the most predominant MLST type of clonally related CRKP isolate colonizing these patients, followed by ST15 (26%, 19 of 74). Conclusions The colonization of K pneumoniae may increase the incidence of corresponding K pneumoniae infection in critically ill patients in the ICU. High prevalence of ST11 CRKP (due to blaKPC-2) carriage and infection in ICU was observed.

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