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Thomas L, Chung JH, Lu S, Essilfie A. Machine learning used to determine features of importance linked to overnight stay after patellar tendon repair. J Orthop 2024; 57:55-59. [PMID: 38973967 PMCID: PMC11225721 DOI: 10.1016/j.jor.2024.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Accepted: 06/09/2024] [Indexed: 07/09/2024] Open
Abstract
Purpose The purpose of this study is to determine if machine learning is an effective method to identify features of patients who may need a longer postoperative stay following a patellar tendon repair. Methods The American College of Surgeons National Quality Improvement Program (ACS-NSQIP) was used to collect 1173 patients who underwent patellar tendon repair. Machine learning (ML) was then applied to determine features of importance in this patient population. Several algorithms were used: Random Forest, Artificial Neural Network, Gradient Boosting, and Support Vector Machine. These were then compared to the American Society of Anesthesiologists (ASA) classification system based logistic regression as a control. Results Random Forest (RF) was determined to be the best performing algorithm, with an AUC of 0.72, accuracy of 77.66 %, and precision of 0.79, and recall of 0.96. All other algorithms performed similarly to the control. RF gave the highest permutation feature importance to age (PFI 0.25), BMI (PFI 0.19), ASA classification (PFI 0.14), hematocrit (PFI 0.12), and height (PFI 0.11). Conclusions This study shows that machine learning can be used as a tool to identify features of importance for length of postoperative stay in patients undergoing patellar tendon repair. RF was found to be a better performing model than logistic regression at determining patients predisposed to longer length of stay as determined by AUC. This supported the study's hypothesis that ML can provide an effective method for identifying features of importance in patients requiring a longer postoperative stay after patellar tendon repair.
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Affiliation(s)
- Luke Thomas
- School of Medicine, Loma Linda University, Loma Linda, CA, 92354, USA
| | - Jun Ho Chung
- School of Medicine, Loma Linda University, Loma Linda, CA, 92354, USA
| | - Sarah Lu
- California University of Science and Medicine, Colton, CA, 92324, USA
| | - Anthony Essilfie
- Columbia University Vagelos College of Physicians and Surgeons, New York, NY, 10032, USA
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2
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Potter GR, Feuchtenberger BW, Sowinski HN, Roberts AJ, Siegel ER, Dietz MJ, Stambough JB, Bedard NA, Mears SC. How Many Patients Qualify for Extended Oral Antibiotic Prophylaxis Infection Following Primary and Revision Hip and Knee Arthroplasties? J Knee Surg 2024; 37:530-537. [PMID: 38101450 DOI: 10.1055/s-0043-1777788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2023]
Abstract
Extended oral antibiotic prophylaxis (EOAP) has been suggested to reduce rates of periprosthetic joint infection (PJI) postoperatively after total joint arthroplasty (TJA). The purpose of this multicenter study is to define how many TJA patients are considered high risk for developing PJI based on published EOAP criteria and determine whether this status is associated with socioeconomic or demographic factors. All primary and aseptic revision TJAs performed in 2019 at three academic medical centers were reviewed. High-risk status was defined based on prior published EOAP criteria. Area deprivation index (ADI) was calculated as a measure of socioeconomic status. Data were reported as means with standard deviation. Both overall and institutional differences were compared. Of the 2,511 patients (2,042 primary and 469 revision) in this cohort, 73.3% met criteria for high risk (primary: 72.9% [1,490] and revision: 74.6% [350]). Patient's race or age did not have a significant impact on risk designation; however, a larger proportion of high-risk patients were women (p = 0.002) and had higher Elixhauser scores (p < 0.001). The mean ADI for high-risk patients was higher (more disadvantaged) than for standard-risk patients (64.0 [20.8] vs. 59.4 [59.4]) (p < 0.001). Over 72% of primary and revision TJA patients at three medical centers met published criteria for EOAP. These patients were more often women, had more comorbidities, and lived in more disadvantaged areas. Our findings suggest that most patients qualify for EOAP, which may call for more stringent criteria on who would benefit extended antibiotic prophylaxis.
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Affiliation(s)
- Genna R Potter
- Department of Orthopedic Surgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Bennett W Feuchtenberger
- Department of Orthopedic Surgery, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa
| | - Halee N Sowinski
- Department of Orthopaedics, West Virginia University School of Medicine, Morgantown, West Virginia
| | - Austin J Roberts
- Department of Orthopaedics, West Virginia University School of Medicine, Morgantown, West Virginia
| | - Eric R Siegel
- Department of Biostatistics, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Matthew J Dietz
- Department of Orthopaedics, West Virginia University School of Medicine, Morgantown, West Virginia
| | - Jeffery B Stambough
- Department of Orthopedic Surgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | | | - Simon C Mears
- Department of Orthopedic Surgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas
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Saeedi FA, Hegazi MA, Alsaedi H, Alganmi AH, Mokhtar JA, Metwalli EM, Hamadallah H, Siam GS, Alaqla A, Alsharabi A, Alotaibi SA. Multidrug-Resistant Bacterial Infections in Pediatric Patients Hospitalized at King Abdulaziz University Hospital, Jeddah, Western Saudi Arabia. CHILDREN (BASEL, SWITZERLAND) 2024; 11:444. [PMID: 38671661 PMCID: PMC11049043 DOI: 10.3390/children11040444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/02/2024] [Accepted: 04/04/2024] [Indexed: 04/28/2024]
Abstract
Multidrug-resistant bacterial infections (MDRIs) constitute a major global threat due to increased patient morbidity/mortality and hospital stay/healthcare costs. A few studies from KSA, including our locality, addressed antimicrobial resistance in pediatric patients. This study was performed to recognize the incidence and clinical/microbiologic features of MDRIs in hospitalized pediatric patients. A retrospective cross-sectional study included pediatric patients < 18 years, admitted to King Abdulaziz University Hospital, between October 2021 and November 2022, with confirmed positive cultures of bacteria isolated from blood/body fluids. Patients' medical files provided the required data. MDR organisms (MDROs) were identified in 12.8% of the total cultures. The incidence of MDRIs was relatively high, as it was detected in 42% of patients and in 54.3% of positive bacterial cultures especially among critically ill patients admitted to the NICU and PICU. Pneumonia/ventilator-associated pneumonia was the main type of infection in 37.8% of patients with MDROs. Klebsiella pneumoniae was the most common significantly isolated MDRO in 39.5% of MDR cultures. Interestingly, a low weight for (no need for their as terminology weight for age is standard and well-known) was the only significant risk factor associated with MDROs (p = 0.02). Mortality was significantly higher (p = 0.001) in patients with MDROs (32.4%) than in patients without MDROs (3.9%). Patients who died including 85.7% of patients with MDROs had significantly longer durations of admission, more cultures, and utilized a larger number of antibiotics than the surviving patients (p = 0.02, p = 0.01, p = 0.04, respectively). This study provided a comprehensive update on the seriously alarming problem of MDROs, and its impacts on pediatric patients. The detected findings are crucial and are a helpful guide to decid for implementing effective strategies to mitigate MDROs.
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Affiliation(s)
- Fajr A. Saeedi
- Department of Pediatrics, Faculty of Medicine in Rabigh, King Abdulaziz University, Jeddah 80205, Saudi Arabia; (F.A.S.); (H.A.); (H.H.)
| | - Moustafa A. Hegazi
- Department of Pediatrics, Faculty of Medicine in Rabigh, King Abdulaziz University, Jeddah 80205, Saudi Arabia; (F.A.S.); (H.A.); (H.H.)
- Department of Pediatrics, Faculty of Medicine in Mansoura, Mansoura University Children’s Hospital, Mansoura 35516, Egypt
| | - Hani Alsaedi
- Department of Pediatrics, Faculty of Medicine in Rabigh, King Abdulaziz University, Jeddah 80205, Saudi Arabia; (F.A.S.); (H.A.); (H.H.)
| | - Ahmed Hussain Alganmi
- Faculty of Medicine in Rabigh, King Abdulaziz University, Jeddah 80205, Saudi Arabia; (A.H.A.); (A.A.); (A.A.); (S.A.A.)
| | - Jawahir A. Mokhtar
- Department of Clinical Microbiology and Immunology, Faculty of Medicine, King Abdulaziz University Hospital, Jeddah 80215, Saudi Arabia;
- Vaccines and Immunotherapy Unit, King Fahad Medical Research Center, King Abdulaziz University, Jeddah 80216, Saudi Arabia
| | | | - Hanaa Hamadallah
- Department of Pediatrics, Faculty of Medicine in Rabigh, King Abdulaziz University, Jeddah 80205, Saudi Arabia; (F.A.S.); (H.A.); (H.H.)
| | - Ghassan S. Siam
- Faculty of Medicine in Rabigh, King Abdulaziz University, Jeddah 80205, Saudi Arabia; (A.H.A.); (A.A.); (A.A.); (S.A.A.)
| | - Abdullah Alaqla
- Faculty of Medicine in Rabigh, King Abdulaziz University, Jeddah 80205, Saudi Arabia; (A.H.A.); (A.A.); (A.A.); (S.A.A.)
| | - Abdullah Alsharabi
- Faculty of Medicine in Rabigh, King Abdulaziz University, Jeddah 80205, Saudi Arabia; (A.H.A.); (A.A.); (A.A.); (S.A.A.)
| | - Sultan Ahmed Alotaibi
- Faculty of Medicine in Rabigh, King Abdulaziz University, Jeddah 80205, Saudi Arabia; (A.H.A.); (A.A.); (A.A.); (S.A.A.)
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Arns B, Sorio GGL, Vieceli T, Pereira D, Celestino de Souza Â, Lamb Wink P, Paes JH, David L, Barboza F, Hickmann S, Alves G, Santos AC, da Rosa A, Duarte Alves M, Massotti Magagnin C, Gomes E, Zavascki AP, Rigatto MH. Evaluation of clinical and microbiological factors related to mortality in patients with Gram-negative bacterial infections treated with ceftazidime-avibactam: A prospective multicentric cohort study. J Glob Antimicrob Resist 2024; 36:393-398. [PMID: 38342378 DOI: 10.1016/j.jgar.2024.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/30/2024] [Accepted: 02/01/2024] [Indexed: 02/13/2024] Open
Abstract
OBJECTIVES This study aimed to evaluate the clinical and microbiological risk factors associated with mortality in patients treated with ceftazidime-avibactam for carbapenem-resistant Gram-negative bacterial infections. METHODS This multicentric prospective cohort study included hospitalized adult patients with a microbiologically confirmed infection treated with ceftazidime-avibactam for ≥48 hours. The clinical and microbiological risk factors for 30-day mortality were evaluated using a Cox regression model. RESULTS Of the 193 patients evaluated from the five tertiary hospitals, 127 were included in the study. Thirty-five patients (27.6%) died within 30 days. Infections with AmpC beta-lactamase-carrying bacteria were independently related to 30-day mortality (adjusted hazard ratio [aHR] 2.49, 95% confidence interval [CI] 1.28-4.84, P < 0.01) after adjusting for time from infection to antimicrobial prescription (P = 0.04). Further, these bacterial infections were also related to higher in-hospital mortality (aHR 2.17, 95% CI 1.24-3.78, P < 0.01). Only one patient developed resistance to ceftazidime-avibactam during treatment. CONCLUSIONS Treatment with ceftazidime-avibactam had worse clinical outcomes in patients with infections with bacteria with chromosomally encoded AmpC beta-lactamase. However, these findings should be confirmed in future studies.
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Affiliation(s)
- Beatriz Arns
- Medical Science Post-Graduation Program, Federal University of Rio Grande do Sul, Porto Alegre, Brazil; Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil; Infectious Diseases and Infection Control Service, Hospital Moinhos de Vento, Porto Alegre, Brazil
| | | | | | | | | | | | - Julia Hoefel Paes
- Pontifícia Universidade Católica do Rio Grande do Sul Medical School, Porto Alegre, Brazil
| | - Leonardo David
- Pontifícia Universidade Católica do Rio Grande do Sul Medical School, Porto Alegre, Brazil
| | - Fernanda Barboza
- Pontifícia Universidade Católica do Rio Grande do Sul Medical School, Porto Alegre, Brazil
| | - Stella Hickmann
- Pontifícia Universidade Católica do Rio Grande do Sul Medical School, Porto Alegre, Brazil
| | | | - Antônio Cândido Santos
- Infectious Diseases and Infection Control Service, Hospital Moinhos de Vento, Porto Alegre, Brazil
| | | | - Marcelle Duarte Alves
- Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil; Grupo Fleury, Laboratório Weinmann Medicina Diagnóstica, Porto Alegre, Brazil
| | | | - Eduardo Gomes
- Medical Science Post-Graduation Program, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Alexandre Prehn Zavascki
- Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil; Infectious Diseases and Infection Control Service, Hospital Moinhos de Vento, Porto Alegre, Brazil; Internal Medicine Department, Federal University of Rio Grande do Sul Medical School, Porto Alegre, Brazil
| | - Maria Helena Rigatto
- Medical Science Post-Graduation Program, Federal University of Rio Grande do Sul, Porto Alegre, Brazil; Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil; Internal Medicine Department, Federal University of Rio Grande do Sul Medical School, Porto Alegre, Brazil.
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Kon H, Lurie-Weinberger M, Cohen A, Metsamber L, Keren-Paz A, Schwartz D, Carmeli Y, Schechner V. Occurrence, Typing, and Resistance Genes of ESBL/AmpC-Producing Enterobacterales in Fresh Vegetables Purchased in Central Israel. Antibiotics (Basel) 2023; 12:1528. [PMID: 37887229 PMCID: PMC10604292 DOI: 10.3390/antibiotics12101528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 10/02/2023] [Accepted: 10/09/2023] [Indexed: 10/28/2023] Open
Abstract
Beta-lactam resistance can lead to increased mortality, higher healthcare expenses, and limited therapeutic options. The primary mechanism of beta-lactam resistance is the production of extended-spectrum beta-lactamases (ESBL) and AmpC beta-lactamases. The spread of beta-lactamase-producing Enterobacterales via the food chain may create a resistance reservoir. The aims of this study were to determine the prevalence of ESBL/AmpC-producing Enterobacterales in vegetables, to examine the association between EBSL/AmpC-producing bacteria and types of vegetables, packaging, and markets, and to investigate the genetic features of ESBL-producing isolates. The antibiotic susceptibilities were determined using VITEK. Phenotypic ESBL/AmpC production was confirmed using disk diffusion. ESBL-producing isolates were subjected to Fourier-transform infrared (FT-IR) spectroscopy and to whole genome sequencing using Oxford Nanopore sequencing technology. Of the 301 vegetable samples, 20 (6.6%) were positive for ESBL producers (16 Klebsiella pneumoniae and 4 Escherichia coli), and 63 (20.9%) were positive for AmpC producers (56 Enterobacter cloacae complex, 4 Enterobacter aerogenes/cancerogenus, and 3 Pantoea spp., Aeromonas hydrophila, and Citrobacter braakii). The blaCTX-M and blaSHV genes were most common among ESBL-producing isolates. The beta-lactamase genes of the ESBL producers were mainly carried on plasmids. Multilocus sequence typing and FT-IR typing revealed high diversity among the ESBL producers. AmpC producers were significantly more common in leafy greens and ESBL producers were significantly less common in climbing vegetables. The presence of ESBL/AmpC-producing Enterobacterales in raw vegetables may contribute to the dissemination of resistance genes in the community.
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Affiliation(s)
- Hadas Kon
- National Institute for Antibiotic Resistance and Infection Control, Ministry of Health, Tel-Aviv 6423906, Israel; (H.K.); (M.L.-W.); (A.C.); (A.K.-P.); (D.S.); (Y.C.)
| | - Mor Lurie-Weinberger
- National Institute for Antibiotic Resistance and Infection Control, Ministry of Health, Tel-Aviv 6423906, Israel; (H.K.); (M.L.-W.); (A.C.); (A.K.-P.); (D.S.); (Y.C.)
| | - Adi Cohen
- National Institute for Antibiotic Resistance and Infection Control, Ministry of Health, Tel-Aviv 6423906, Israel; (H.K.); (M.L.-W.); (A.C.); (A.K.-P.); (D.S.); (Y.C.)
| | - Liat Metsamber
- School of Public Health, Faculty of Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel;
| | - Alona Keren-Paz
- National Institute for Antibiotic Resistance and Infection Control, Ministry of Health, Tel-Aviv 6423906, Israel; (H.K.); (M.L.-W.); (A.C.); (A.K.-P.); (D.S.); (Y.C.)
| | - David Schwartz
- National Institute for Antibiotic Resistance and Infection Control, Ministry of Health, Tel-Aviv 6423906, Israel; (H.K.); (M.L.-W.); (A.C.); (A.K.-P.); (D.S.); (Y.C.)
| | - Yehuda Carmeli
- National Institute for Antibiotic Resistance and Infection Control, Ministry of Health, Tel-Aviv 6423906, Israel; (H.K.); (M.L.-W.); (A.C.); (A.K.-P.); (D.S.); (Y.C.)
- Faculty of Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel
| | - Vered Schechner
- National Institute for Antibiotic Resistance and Infection Control, Ministry of Health, Tel-Aviv 6423906, Israel; (H.K.); (M.L.-W.); (A.C.); (A.K.-P.); (D.S.); (Y.C.)
- School of Public Health, Faculty of Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel;
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Cariou E, Griffier R, Orieux A, Silva S, Faguer S, Seguin T, Nseir S, Canet E, Desclaux A, Souweine B, Klouche K, Guisset O, Pillot J, Picard W, Saghi T, Delobel P, Gruson D, Prevel R, Boyer A. Efficacy of carbapenem vs non carbapenem β-lactam therapy as empiric antimicrobial therapy in patients with extended-spectrum β-lactamase-producing Enterobacterales urinary septic shock: a propensity-weighted multicenter cohort study. Ann Intensive Care 2023; 13:22. [PMID: 36959425 PMCID: PMC10036246 DOI: 10.1186/s13613-023-01106-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 02/05/2023] [Indexed: 03/25/2023] Open
Abstract
BACKGROUND The rise in antimicrobial resistance is a global threat responsible for about 33,000 deaths in 2015 with a particular concern for extended-spectrum beta-lactamase-producing Enterobacterales (ESBL-E) and has led to a major increase in the use of carbapenems, last-resort antibiotics. METHODS In this retrospective propensity-weighted multicenter observational study conducted in 11 ICUs, the purpose was to assess the efficacy of non carbapenem regimen (piperacillin-tazobactam (PTZ) + aminoglycosides or 3rd-generation cephalosporin (3GC) + aminoglycosides) as empiric therapy in comparison with carbapenem in extended-spectrum β-lactamase-producing Enterobacterales (ESBL-E) urinary septic shock. The primary outcome was Day-30 mortality. RESULTS Among 156 patients included in this study, 69 received a carbapenem and 87 received non carbapenem antibiotics as empiric treatment. Baseline clinical characteristics were similar between the two groups. Patients who received carbapenem had similar Day-30 mortality (10/69 (15%) vs 6/87 (7%), OR = 1.99 [0.55; 5.34] p = 0.16), illness severity, resolution of septic shock, and ESBL-E infection recurrence rates than patients who received an empiric non carbapenem therapy. The rates of secondary infection with C. difficile were comparable. CONCLUSIONS In ESBL-E urinary septic shock, empiric treatment with a non carbapenem regimen, including systematically aminoglycosides, was not associated with higher mortality, compared to a carbapenem regimen.
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Affiliation(s)
- Erwann Cariou
- Medical Intensive Care Unit, CHU de Bordeaux, 33000, Bordeaux, France
| | - Romain Griffier
- Department of Public Health, University of Bordeaux, 33000, Bordeaux, France
| | - Arthur Orieux
- Medical Intensive Care Unit, CHU de Bordeaux, 33000, Bordeaux, France
- Centre de Recherche Cardio-Thoracique de Bordeaux, Inserm UMR 1045, University Bordeaux, 33000, Bordeaux, France
| | - Stein Silva
- Intensive Care Unit, University Hospital of Purpan, 31300, Toulouse, France
| | - Stanislas Faguer
- Intensive Care Unit, Department of Nephrology and Organ Transplantation, Centre for Rare Renal Diseases, University Hospital of Toulouse, 31000, Toulouse, France
| | - Thierry Seguin
- Intensive Care Unit, University Hospital of Rangeuil, 31000, Toulouse, France
| | - Saad Nseir
- Department of Intensive Care Medicine, Critical Care Center, CHU of Lille, 59000, Lille, France
| | - Emmanuel Canet
- Medical Intensive Care Unit, Nantes University Hospital, 44000, Nantes, France
| | - Arnaud Desclaux
- Infectious and Tropical Diseases Department, CHU Bordeaux, 33000, Bordeaux, France
| | - Bertrand Souweine
- Medical Intensive Care Unit, Gabriel-Montpied University Hospital, 63000, Clermont-Ferrand, France
| | - Kada Klouche
- Medical Intensive Care Unit, CHU Montpellier, 34000, Montpellier, France
| | - Olivier Guisset
- Medical Intensive Care Unit, CHU de Bordeaux, 33000, Bordeaux, France
| | - Jerome Pillot
- Intensive Care Unit, Hôpital Saint-Léon, Centre Hospitalier de la Côte Basque, 64100, Bayonne, France
| | - Walter Picard
- Intensive Care Unit, Centre Hospitalier de Pau, 64000, Pau, France
| | - Tahar Saghi
- Intensive Care Unit, Polyclinique Bordeaux Nord Aquitaine, 33000, Bordeaux, France
| | - Pierre Delobel
- Infectious and Tropical Diseases Department, CHU Toulouse, 31000, Toulouse, France
| | - Didier Gruson
- Medical Intensive Care Unit, CHU de Bordeaux, 33000, Bordeaux, France
- Department of Public Health, University of Bordeaux, 33000, Bordeaux, France
| | - Renaud Prevel
- Medical Intensive Care Unit, CHU de Bordeaux, 33000, Bordeaux, France
- Centre de Recherche Cardio-Thoracique de Bordeaux, Inserm UMR 1045, University Bordeaux, 33000, Bordeaux, France
| | - Alexandre Boyer
- Medical Intensive Care Unit, CHU de Bordeaux, 33000, Bordeaux, France.
- Centre de Recherche Cardio-Thoracique de Bordeaux, Inserm UMR 1045, University Bordeaux, 33000, Bordeaux, France.
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Zhang J, Liu W, Shi W, Cui X, Liu Y, Lu Z, Xiao W, Hua T, Yang M. A Nomogram With Six Variables Is Useful to Predict the Risk of Acquiring Carbapenem-Resistant Microorganism Infection in ICU Patients. Front Cell Infect Microbiol 2022; 12:852761. [PMID: 35402310 PMCID: PMC8990894 DOI: 10.3389/fcimb.2022.852761] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 03/07/2022] [Indexed: 11/13/2022] Open
Abstract
Background Carbapenem-resistant microorganism (CRO) transmission in the medical setting confers a global threat to public health. However, there is no established risk prediction model for infection due to CRO in ICU patients. This study aimed to develop a nomogram to predict the risk of acquiring CRO infection in patients with the first ICU admission and to determine the length of ICU stay (ICU-LOS) and 28-day survival. Methods Patient data were retrieved from the Medical Information Mart for Intensive Care (MIMIC-IV) database based on predetermined inclusion and exclusion criteria. A CRO was defined as a bacterium isolated from any humoral microbial culture that showed insensitivity or resistance to carbapenems. The characteristics of CRO and non-CRO patients in the first ICU admission were compared. Propensity score matching was applied to balance the differences between the CRO and non-CRO cohorts. Kaplan–Meier curves were constructed to determine the 28-day survival rate and ICU-LOS. Furthermore, after randomization of the CRO cohort into the training and validation sets, a predictive nomogram was constructed based on LASSO regression and Logistic regression analysis, and its performance was verified by internal validation. Results Overall, 4531 patients who had first ICU admission as recorded in MIMIC-IV were enrolled, 183 (4.04%) of whom were diagnosed with CRO infection. Moreover, CRO infection was independently associated with 28-day survival and ICU-LOS in ICU patients. Parameters eligible for inclusion in this nomogram were male sex, hemoglobin-min, temperature-max, use of a peripherally inserted central catheter line, dialysis treatment, and use of carbapenems. This nomogram showed a better performance as indicated by the area under the receiver operating characteristic curve values of 0.776 (95% confidence interval [CI] 0.667-0.750) and 0.723 (95% CI 0.556-0.855) in the training and validation sets, respectively, in terms of predicting the risk of acquiring CRO infection. Conclusions CRO infection was independently associated with ICU-LOS and 28-day survival in patients with first ICU admission. The nomogram showed the best prediction of the risk of acquiring CRO infection in ICU patients. Based on the nomogram-based scoring, we can management the risk factors and guide individualized prevention and control of CRO.
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Affiliation(s)
- Jin Zhang
- The 2nd Department of Intensive Care Unit, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
- The Laboratory of Cardiopulmonary Resuscitation and Critical Care Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Wanjun Liu
- The 2nd Department of Intensive Care Unit, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
- The Laboratory of Cardiopulmonary Resuscitation and Critical Care Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Wei Shi
- The 2nd Department of Intensive Care Unit, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
- The Laboratory of Cardiopulmonary Resuscitation and Critical Care Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Xuanxuan Cui
- The 2nd Department of Intensive Care Unit, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
- The Laboratory of Cardiopulmonary Resuscitation and Critical Care Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yu Liu
- Key Laboratory of Intelligent Computing and Signal Processing, Ministry of Education, Anhui University, Hefei, China
| | - Zongqing Lu
- The 2nd Department of Intensive Care Unit, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
- The Laboratory of Cardiopulmonary Resuscitation and Critical Care Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Wenyan Xiao
- The 2nd Department of Intensive Care Unit, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
- The Laboratory of Cardiopulmonary Resuscitation and Critical Care Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Tianfeng Hua
- The 2nd Department of Intensive Care Unit, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
- The Laboratory of Cardiopulmonary Resuscitation and Critical Care Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Min Yang
- The 2nd Department of Intensive Care Unit, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
- The Laboratory of Cardiopulmonary Resuscitation and Critical Care Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
- *Correspondence: Min Yang,
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Epidemiology of infections and colonization caused by Klebsiella pneumoniae NDM in the Mazovian Voivodeship in 2016–2017. POSTEP HIG MED DOSW 2022. [DOI: 10.2478/ahem-2022-0024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Introduction
Klebsiella pneumoniae is a common cause of antimicrobial-resistant opportunistic infections in hospitalized patients. Due to acquired resistance to multiple antimicrobials, K. pneumoniae is a particular threat in health care. The aim of this study was the assessment of the epidemiological situation related to the spread of symptomatic infections and colonization caused by K. pneumoniae New Delhi metallo-β-lactamase (NDM) in the Mazovian Voivodeship in 2016–2017.
Materials and Methods
The study included data collected between 2016 and 2017 from 168 hospitals located in and outside of Warsaw but limited to the Mazovian Voivodeship. Data was extracted from reports on suspected epidemic outbreaks and the elimination of outbreaks as well as annual reports on nosocomial infections and alarm pathogens.
Results
The incidence of infections caused by K. pneumoniae NDM (symptomatic and asymptomatic) was 0.96/1,000 hospitalizations in 2016 and 2.04/1,000 hospitalizations in 2017. In 2016, hospitals in the Mazovian Voivodeship reported 50 transmissions of K. pneumoniae NDM. In 2017, this value increased to 74. The risk of symptomatic infection was higher in hospitals outside of Warsaw than in hospitals in Warsaw, while risk of colonization was higher in hospitals in Warsaw.
Conclusions
The epidemiological situation related to infections and colonization caused by K. pneumoniae NDM in the Mazovian Voivodeship is disadvantageous, which implies the necessity to monitor anti-epidemic measures. The epidemic situation in hospitals outside of Warsaw seems to be worse compared to hospitals in Warsaw, which have higher risks of symptomatic infection caused by K. pneumoniae NDM.
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Zhang M, Wang C, O’Connor A. A Bayesian approach to modeling antimicrobial multidrug resistance. PLoS One 2021; 16:e0261528. [PMID: 34965273 PMCID: PMC8716034 DOI: 10.1371/journal.pone.0261528] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 12/03/2021] [Indexed: 11/23/2022] Open
Abstract
Multidrug resistance (MDR) has been a significant threat to public health and effective treatment of bacterial infections. Current identification of MDR is primarily based upon the large proportions of isolates resistant to multiple antibiotics simultaneously, and therefore is a belated evaluation. For bacteria with MDR, we expect to see strong correlations in both the quantitative minimum inhibitory concentration (MIC) and the binary susceptibility as classified by the pre-determined breakpoints. Being able to detect correlations from these two perspectives allows us to find multidrug resistant bacteria proactively. In this paper, we provide a Bayesian framework that estimates the resistance level jointly for antibiotics belonging to different classes with a Gaussian mixture model, where the correlation in the latent MIC can be inferred from the Gaussian parameters and the correlation in binary susceptibility can be inferred from the mixing weights. By augmenting the laboratory measurement with the latent MIC variable to account for the censored data, and by adopting the latent class variable to represent the MIC components, our model was shown to be accurate and robust compared with the current assessment of correlations. Applying the model to Salmonella heidelberg samples isolated from human participants in National Antimicrobial Resistance Monitoring System (NARMS) provides us with signs of joint resistance to Amoxicillin-clavulanic acid & Cephalothin and joint resistance to Ampicillin & Cephalothin. Large correlations estimated from our model could serve as a timely tool for early detection of MDR, and hence a signal for clinical intervention.
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Affiliation(s)
- Min Zhang
- Department of Statistics, Iowa State University, Ames, Iowa, United States of America
| | - Chong Wang
- Department of Statistics, Iowa State University, Ames, Iowa, United States of America
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, Iowa, United States of America
- * E-mail:
| | - Annette O’Connor
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, Iowa, United States of America
- Department of Large Animal Clinical Sciences, Michigan State University, East Lansing, Michigan, United States of America
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Koukoubani T, Makris D, Daniil Z, Paraforou T, Tsolaki V, Zakynthinos E, Papanikolaou J. The role of antimicrobial resistance on long-term mortality and quality of life in critically ill patients: a prospective longitudinal 2-year study. Health Qual Life Outcomes 2021; 19:72. [PMID: 33658021 PMCID: PMC7927260 DOI: 10.1186/s12955-021-01712-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 02/18/2021] [Indexed: 11/21/2022] Open
Abstract
Background In the recent era, antimicrobial resistance has been identified as one of the most important threats to human health worldwide. The rapid emergence of antibiotic-resistant pathogens (ABRP) in the modern intensive care unit (ICU) also represents a “nightmare scenario” with unknown clinical consequences. In the Greek ICU, in particular, gram negative ABRPs are now considered endemic. However, the possible longitudinal impact of ABRPs on long-term outcomes of ICU patients has not yet been determined. Methods In this two-year (January 2014-December 2015) single-centre observational longitudinal study, 351 non-neurocritical ICU patients ≥ 18 year-old were enrolled. Patients’ demographic, clinical and outcome data were prospectively collected. Quality-adjusted life years (QALY) were calculated at 6, 12, 18 and 24 months after ICU admission. Results Fifty-eight patients developed infections due to ABRP (ABRP group), 57 due to non-ABRP (non-ABRP group), and 236 demonstrated no infection (no-infection group) while in ICU. Multiple regression analysis revealed that multiple organ dysfunction syndrome score (OR: 0.676, 95%CI 0.584–0.782; P < 0.001) and continuous renal replacement therapy (OR: 4.453, 95%CI 1.805–10.982; P = 0.001) were the only independent determinants for ABRP infections in ICU. Intra-ICU, 90-day and 2-year mortality was 27.9%, 52.4% and 61.5%, respectively. Compared to the non-ABRP and no-infection group, the ABRP group demonstrated increased intra-ICU, 90-day and 2-year mortality (P ≤ 0.022), worse 2-year survival rates in ICU patients overall and ICU survivor subset (Log-rank test, P ≤ 0.046), and poorer progress over time in 2-year QALY kinetics in ICU population overall, ICU survivor and 2-year survivor subgroups (P ≤ 0.013). ABRP group was further divided into multi-drug and extensively-drug resistant subgroups [MDR (n = 34) / XDR (n = 24), respectively]. Compared to MDR subgroup, the XDR subgroup demonstrated increased ICU, 90-day and 2-year mortality (P ≤ 0.031), but similar 90-day and 2-year QALYs (P ≥ 0.549). ABRP infections overall (HR = 1.778, 95% CI 1.166–2.711; P = 0.008), as well as XDR [HR = 1.889, 95% CI 1.075–3.320; P = 0.027) but not MDR pathogens, were independently associated with 2-year mortality, after adjusting for several covariates of critical illness. Conclusions The present study may suggest a significant association between ABRP (especially XDR) infections in ICU and increased mortality and inability rates for a prolonged period post-discharge that requires further attention in larger-scale studies.
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Affiliation(s)
| | - Demosthenes Makris
- Department of Critical Care, School of Medicine, University of Thessaly, University Hospital of Larissa, Biopolis, 41110, Larissa, Greece
| | - Zoe Daniil
- Department of Critical Care, School of Medicine, University of Thessaly, University Hospital of Larissa, Biopolis, 41110, Larissa, Greece
| | - Theoniki Paraforou
- Department of Critical Care, General Hospital of Trikala, Thessaly, Greece
| | - Vasiliki Tsolaki
- Department of Critical Care, School of Medicine, University of Thessaly, University Hospital of Larissa, Biopolis, 41110, Larissa, Greece
| | - Epaminondas Zakynthinos
- Department of Critical Care, School of Medicine, University of Thessaly, University Hospital of Larissa, Biopolis, 41110, Larissa, Greece
| | - John Papanikolaou
- Department of Critical Care, School of Medicine, University of Thessaly, University Hospital of Larissa, Biopolis, 41110, Larissa, Greece.
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Giraldi G, Montesano M, Napoli C, Frati P, La Russa R, Santurro A, Scopetti M, Orsi GB. Healthcare-Associated Infections Due to Multidrug-Resistant Organisms: a Surveillance Study on Extra Hospital Stay and Direct Costs. Curr Pharm Biotechnol 2020; 20:643-652. [PMID: 30961489 DOI: 10.2174/1389201020666190408095811] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 11/27/2018] [Accepted: 12/15/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND The increasing antimicrobial resistance poses a challenge to surveillance systems and raises concerns about the impact of multidrug-resistant organisms on patient safety. OBJECTIVE The study aimed to estimate extra hospital stay and economic burden of infections due to alert organisms - mostly multidrug-resistant - in a teaching hospital. METHODS The present retrospective matched cohort study was conducted based on the analysis of hospital admissions at Sant'Andrea Teaching Hospital in Rome from April to December 2015. Extra hospital stay was the difference in the length of stay between each case and control. All the patients developing an infection due to an alert organism were considered cases, all others were eligible as controls. The costs of LOS were evaluated by multiplying the extra stay with the hospital daily cost. RESULTS Overall, 122 patients developed an infection due to alert organisms and were all matched with controls. The attributable extra stay was of 2,291 days (mean 18.8; median 19.0) with a significantly increased hospitalization in intensive care units (21.2 days), bloodstream infections (52.5 days), and infections due to Gram-negative bacteria (mean 29.2 days; median 32.6 days). Applying the single day hospital cost, the overall additional expenditure was 11,549 euro per patient. The average additional cost of antibiotic drugs for the treatment of infections was about 1,200 euro per patient. CONCLUSION The present study presents an accurate mapping of the clinical and economic impact of infections attributable to alert organisms demonstrating that infections due to multidrug-resistant organisms are associated with higher mortality, longer hospital stays, and increased costs. Article Highlights Box: The increasing antimicrobial resistance poses a challenge for surveillance systems and raises concerns about the impact of multidrug-resistant organisms on patient safety. • Healthcare-associated infections (HAIs) have historically been recognized as a significant public health problem requiring close surveillance. • Despite several and reliable findings have been achieved on clinical issues, our knowledge on the economic impact of healthcare-associated infections due to multidrug-resistant organisms needs to be widened. • Estimating the cost of infections due to multidrug-resistant organisms in terms of extra hospital stay and economic burden is complex, and the financial impact varies across different health systems. • Evaluations of social and economic implications of hospital infections play an increasingly important role in the implementation of surveillance systems. • The costs of infection prevention and control programs and dedicated personnel are relatively low and self-sustainable when efficient.
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Affiliation(s)
- Guglielmo Giraldi
- Department of Public Health and Infectious Disease, Sapienza University of Rome, Rome, Italy
| | | | - Christian Napoli
- Department of Medical and Surgical Sciences and Translational Medicine, Sapienza University of Rome, Rome, Italy
| | - Paola Frati
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Sapienza University of Rome, Rome, Italy.,IRCCS Neuromed, Pozzilli, Italy
| | - Raffaele La Russa
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Sapienza University of Rome, Rome, Italy.,IRCCS Neuromed, Pozzilli, Italy
| | - Alessandro Santurro
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Sapienza University of Rome, Rome, Italy
| | - Matteo Scopetti
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Sapienza University of Rome, Rome, Italy
| | - Giovanni B Orsi
- Department of Public Health and Infectious Disease, Sapienza University of Rome, Rome, Italy
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Yoon YK, Ryu JM, Lee MJ, Lee SE, Yang KS, Lee CK, Kim MJ, Sohn JW. Active surveillance at the time of hospital admission for multidrug-resistant microorganisms among patients who had recently been hospitalized at health care facilities. Am J Infect Control 2019; 47:1188-1193. [PMID: 31122673 DOI: 10.1016/j.ajic.2019.04.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 04/09/2019] [Accepted: 04/10/2019] [Indexed: 01/19/2023]
Abstract
BACKGROUND This study aimed to investigate the epidemiology of multidrug-resistant microorganism (MDRO) carriage at hospital admission and to identify risk factors for MDRO influx into hospital settings. METHODS This cohort study was conducted at a 1,051-bed university-affiliated hospital in the Republic of Korea between July 1 and December 31, 2017. Active surveillance for MDRO carriage was performed within 48 hours of hospitalization in all adult patients who had prior hospitalization within the preceding 3 months. RESULTS During the study, 575 patients were admitted with a hospitalization history within 3 months. Active surveillance at hospital admission was performed in 192 eligible patients. Thirty-three (17.2%) patients with MDRO carriage were identified from active surveillance. In the multivariate logistic regression analysis, prior exposure to antibiotics within 90 days, hospitalization for ≥60 days before admission, cognitive dysfunction, percutaneous drainage, and underlying pulmonary diseases were identified as independent risk factors for MDRO influx. CONCLUSIONS Our findings suggest a significant prevalence of MDRO acquisition at acute care hospital admission in patients who had been recently hospitalized. To control the spread of MDRO, collaborations among health care institutions and targeted screening at hospital admission according to patient risk factors are warranted.
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Affiliation(s)
- Young Kyung Yoon
- Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Republic of Korea; Infection Control Unit, Korea University Medical Center, Seoul, Republic of Korea
| | - Jee Myung Ryu
- Infection Control Unit, Korea University Medical Center, Seoul, Republic of Korea
| | - Min Jung Lee
- Infection Control Unit, Korea University Medical Center, Seoul, Republic of Korea
| | - Sung Eun Lee
- Infection Control Unit, Korea University Medical Center, Seoul, Republic of Korea
| | - Kyung Sook Yang
- Department of Biostatistics, Korea University College of Medicine, Seoul, Republic of Korea
| | - Chang Kyu Lee
- Department of Laboratory Medicine, Korea University College of Medicine, Seoul, Republic of Korea
| | - Min Ja Kim
- Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Republic of Korea
| | - Jang Wook Sohn
- Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Republic of Korea.
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Ambretti S, Bassetti M, Clerici P, Petrosillo N, Tumietto F, Viale P, Rossolini GM. Screening for carriage of carbapenem-resistant Enterobacteriaceae in settings of high endemicity: a position paper from an Italian working group on CRE infections. Antimicrob Resist Infect Control 2019; 8:136. [PMID: 31423299 PMCID: PMC6693230 DOI: 10.1186/s13756-019-0591-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 07/31/2019] [Indexed: 12/11/2022] Open
Abstract
Introduction A variety of national and international guidelines exist around the management of carbapenem resistant Enterobacteriaceae (CREs), but some of these are several years old and do not reflect current epidemiology and they also do not necessarily give pragmatic advice around active surveillance of CREs in countries with a high burden of cases and limited resources. This paper aims to provide a best practice position paper to guide active surveillance in a variety of scenarios in these settings, and discusses which patients should be screened, what methods could be used for screening, and how results might influence infection prevention interventions. Methods This paper was developed as a result of a series of meetings of expert opinion leaders representing the major infectious disease and infection prevention societies in Italy and having the endorsement of AMCLI (Italian Association of Clinical Microbiology) and SITA (Italian Society for Anti-infective Therapy). There was no attempt to undertake a full systematic review of the evidence, as it was felt that this was inadequate to inform a pragmatic view on the best way forward based on current epidemiology and infection rates. Key recommendations Key recommendations focus on the urgent need to promote measures to prevent transmission and infection, focusing on high risk patients and clinical areas, as well as outbreak situations. Active surveillance leading to appropriate infection prevention precautions plays a major role in this. Conclusions There are limited national or international guidelines giving pragmatic advice on the most appropriate measures for active surveillance and management of colonized patients in a high-burden setting such as Italy. While individual hospitals and regions will need to formulate their own policies based on local epidemiology, this position paper attempts to highlight current best practice in this area and provide pragmatic advice for clinicians, infection prevention staff, and healthcare managers.
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Affiliation(s)
- Simone Ambretti
- 1Unit of Clinical Microbiology, St Orsola-Malpighi University Hospital, Bologna, Via Massarenti 9, 40138 Bologna, Italy
| | - Matteo Bassetti
- 2Infectious Diseases Clinic, Department of Medicine University of Udine and Azienda Sanitaria Universitaria Integrata di Udine, Udine, Italy
| | - Pierangelo Clerici
- Microbiological Unit, Department of Laboratory Medicine and Diagnostics Biotecnology, Azienda Socio Sanitaria Territoriale Ovest Milanese, Via Giovanni Paolo II, 2025 Legnano, Mi Italy
| | - Nicola Petrosillo
- 4National Institute for Infectious Diseases "L. Spallanzani", IRCCS-, Rome, Italy
| | - Fabio Tumietto
- 5Infectious Diseases Unit, Department of Medical and Surgical Sciences, S.Orsola-Malpighi Hospital, University of Bologna, Via Massarenti 9, 40138 Bologna, Italy
| | - Pierluigi Viale
- 5Infectious Diseases Unit, Department of Medical and Surgical Sciences, S.Orsola-Malpighi Hospital, University of Bologna, Via Massarenti 9, 40138 Bologna, Italy
| | - Gian Maria Rossolini
- 6Department of Experimental and Clinical Medicine, University of Florence, and Clinical Microbiology and Virology Unit, Florence Careggi University Hospital, Florence, Italy
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Zhen X, Lundborg CS, Sun X, Hu X, Dong H. Economic burden of antibiotic resistance in ESKAPE organisms: a systematic review. Antimicrob Resist Infect Control 2019; 8:137. [PMID: 31417673 PMCID: PMC6692939 DOI: 10.1186/s13756-019-0590-7] [Citation(s) in RCA: 160] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Accepted: 07/31/2019] [Indexed: 02/03/2023] Open
Abstract
Background Antibiotic resistance (ABR) is one of the biggest threats to global health. Infections by ESKAPE (Enterococcus, S. aureus, K. pneumoniae, A. baumannii, P. aeruginosa, and E. coli) organisms are the leading cause of healthcare-acquired infections worldwide. ABR in ESKAPE organisms is usually associated with significant higher morbidity, mortality, as well as economic burden. Directing attention towards the ESKAPE organisms can help us to better combat the wide challenge of ABR, especially multi-drug resistance (MDR). Objective This study aims to systematically review and evaluate the evidence of the economic consequences of ABR or MDR ESKAPE organisms compared with susceptible cases or control patients without infection/colonization in order to determine the impact of ABR on economic burden. Methods Both English-language databases and Chinese-language databases up to 16 January, 2019 were searched to identify relevant studies assessing the economic burden of ABR. Studies reported hospital costs (charges) or antibiotic cost during the entire hospitalization and during the period before/after culture among patients with ABR or MDR ESKAPE organisms were included. The costs were converted into 2015 United States Dollars. Disagreements were resolved by a third reviewer. Results Of 13,693 studies identified, 83 eligible studies were included in our review. The most studied organism was S. aureus, followed by Enterococcus, A. baumannii, E. coli, E. coli or/and K. pneumoniae, P. aeruginosa, and K. pneumoniae. There were 71 studies on total hospital cost or charge, 12 on antibiotic cost, 11 on hospital cost or charge after culture, 4 on ICU cost, 2 on hospital cost or charge before culture, and 2 on total direct and indirect cost. In general, ABR or MDR ESKAPE organisms are significantly associated with higher economic burden than those with susceptible organisms or those without infection or colonization. Nonetheless, there were no differences in a few studies between the two groups on total hospital cost or charge (16 studies), antibiotic cost (one study), hospital cost before culture (one study), hospital cost after culture (one study). Even, one reported that costs associated with MSSA infection were higher than the costs for similar MRSA cases. Conclusions ABR in ESKAPE organisms is not always, but usually, associated with significantly higher economic burden. The results without significant differences may lack statistical power to detect a significant association. In addition, study design which controls for severity of illness and same empirical antibiotic therapy in the two groups would be expected to bias the study towards a similar, even negative result. The review also highlights key areas where further research is needed.
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Affiliation(s)
- Xuemei Zhen
- Center for Health Policy Studies, School of Public Health, Zhejiang University School of Medicine, 866 Yuhangtang Road, Hangzhou, 310058 Zhejiang China
- Global Health-Health Systems and Policy (HSP): Medicines, focusing antibiotics, Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden
| | - Cecilia Stålsby Lundborg
- Global Health-Health Systems and Policy (HSP): Medicines, focusing antibiotics, Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden
| | - Xueshan Sun
- Center for Health Policy Studies, School of Public Health, Zhejiang University School of Medicine, 866 Yuhangtang Road, Hangzhou, 310058 Zhejiang China
| | - Xiaoqian Hu
- Center for Health Policy Studies, School of Public Health, Zhejiang University School of Medicine, 866 Yuhangtang Road, Hangzhou, 310058 Zhejiang China
| | - Hengjin Dong
- Center for Health Policy Studies, School of Public Health, Zhejiang University School of Medicine, 866 Yuhangtang Road, Hangzhou, 310058 Zhejiang China
- The Fourth Affiliated Hospital Zhejiang University School of Medicine, No. N1, Shancheng Avenue, Yiwu City, Zhejiang China
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Prevel R, Boyer A, M’Zali F, Cockenpot T, Lasheras A, Dubois V, Gruson D. Extended spectrum beta-lactamase producing Enterobacterales faecal carriage in a medical intensive care unit: low rates of cross-transmission and infection. Antimicrob Resist Infect Control 2019; 8:112. [PMID: 31333839 PMCID: PMC6617905 DOI: 10.1186/s13756-019-0572-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 07/04/2019] [Indexed: 12/23/2022] Open
Abstract
Background Extended-spectrum beta-lactamases-producing Enterobacterales (ESBL-E) are disseminating worldwide especially in Intensive Care Units (ICUs) and are responsible for increased health costs and mortality. The aims of this work were to study ESBL-E dissemination in ICU and to assess the impact of ESBL-E fecal carriage on subsequent infections during a non-outbreak situation. Methods We therefore screened every patient at admission then once a week in a medical ICU between January and June 2015. Each ESBL-E isolate was characterized by ESBL genes PCR amplification and the clonal dissemination was assessed by Pulsed-Field Gel Electrophoresis (PFGE). Results Among the 608 screened patients, 55 (9%) were colonized by ESBL-E. Forty-four isolates were available for further analysis. Most of them (43/44, 98%) contained a ESBL gene from the CTX-M group. Only one case of ESBL-E cross-transmission occurred, even for acquired ESBL-E colonization. Subsequent infection by ESBL-E occurred in 6/55 (11%) patients and infecting ESBL-E strains were the colonizing ones. ESBL-E faecal carriage had a negative predictive value of 100% and a positive predictive value of 40% to predict ESBL-E ventilator associated-pneumonia (VAP). Alternatives to carbapenems consisting in piperacillin-tazobactam, ceftolozane-tazobactam and ceftazidime-avibactam were all active on this panel of ESBL-E. Conclusions ESBL-E expansion and acquisition in ICU in a non-outbreak situation are not any more fully explained by cross-transmission. Mechanisms underlying ESBL-E dissemination in ICU are still to investigate. Interestingly, as far as we know, our study demonstrates for the first time by PFGE that the colonizing strain is indeed the infecting one in case of subsequent ESBL-E infection. Nevertheless, subsequent ESBL-E infection remains a rare event conferring poor positive predictive value for ESBL-E colonization to predict ESBL-E VAP. Relevance of systematic ESBL-E faecal screening at ICU admission and during ICU stay needs further investigation.
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Affiliation(s)
- Renaud Prevel
- Medical Intensive Care Unit, CHU Bordeaux, Pellegrin universitary hospital, Place Amélie Raba-Léon, F-33000 Bordeaux, France
- UMR 5234 CNRS, Bordeaux University, F-33000 Bordeaux, France
| | - Alexandre Boyer
- Medical Intensive Care Unit, CHU Bordeaux, Pellegrin universitary hospital, Place Amélie Raba-Léon, F-33000 Bordeaux, France
| | - Fatima M’Zali
- UMR 5234 CNRS, Bordeaux University, F-33000 Bordeaux, France
| | | | | | - Véronique Dubois
- UMR 5234 CNRS, Bordeaux University, F-33000 Bordeaux, France
- Bacteriology laboratory, CHU Bordeaux, F-33000 Bordeaux, France
| | - Didier Gruson
- Medical Intensive Care Unit, CHU Bordeaux, Pellegrin universitary hospital, Place Amélie Raba-Léon, F-33000 Bordeaux, France
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16
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Prevel R, Boyer A, M'Zali F, Lasheras A, Zahar JR, Rogues AM, Gruson D. Is systematic fecal carriage screening of extended-spectrum beta-lactamase-producing Enterobacteriaceae still useful in intensive care unit: a systematic review. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2019; 23:170. [PMID: 31088542 PMCID: PMC6518813 DOI: 10.1186/s13054-019-2460-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 04/26/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Extended-spectrum beta-lactamase-producing Enterobacteriaceae (ESBL-E) are disseminating worldwide leading to increased hospital length of stay and mortality in intensive care units (ICU). ESBL-E dissemination was first due to outbreaks in hospital settings which led to the implementation of systematic fecal carriage screening to improve hygiene procedures by contact precautions. ESBLs have since spread in the community, and the relevance of contact precautions is questioned. ESBL-E dissemination led to an overuse of carbapenems triggering the emergence of carbapenem-resistant Enterobacteriaceae. Empirical antimicrobial therapy based on ESBL-E fecal carriage has been proposed but is debated as it could increase the consumption of carbapenems among ESBL-E carriers without any clinical benefit. Finally, selective decontamination among ESBL-E fecal carriers is evoked to decrease the risk for subsequent ESBL-E infection, but its efficacy remains debated. We propose to systematically review the evidence to recommend or not such systematic ESBL-E fecal carriage screening in adult ICU. METHODS Every article focusing on ESBL-E and ICU available on the MEDLINE database was assessed. Articles were included if focusing on cross-transmission, efficacy of hygiene procedures, link between ESBL-E colonization and infection or guidance of empirical therapy or selective decontamination efficacy. RESULTS Among 330 articles referenced on PubMed, 39 abstracts were selected for full-text assessment and 25 studies were included. Systematic screening of ESBL-E fecal carriage to guide contact precautions do not seem to decrease the rate of ESBL-E cross-transmission. It has a very good negative predictive value for subsequent ESBL-E infections but a positive predictive value between 40 and 50% and so does not help to spare carbapenems. Cessation of ESBL-E carriage systematic screening could decrease the use of carbapenems in ICU without any clinical harm. Nevertheless, further studies are needed to validate these results from monocentric before-after study. Selective decontamination strategy applied to ESBL-E fecal carriers could be helpful, but available data are conflicting. CONCLUSION Current knowledge lacks of high-quality evidence to strongly recommend in favor of or against a systematic ESBL-E fecal carriage screening policy for ICU patients in a non-outbreak situation. Further evaluation of selective decontamination or fecal microbiota transplantation among ESBL-E fecal carriers is needed.
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Affiliation(s)
- Renaud Prevel
- CHU Bordeaux, Medical Intensive Care Unit, Pellegrin Hospital, F-33000, Bordeaux, France. .,UMR 5234 CNRS, Bordeaux University, F-33000, Bordeaux, France. .,, Bordeaux, France.
| | - Alexandre Boyer
- CHU Bordeaux, Medical Intensive Care Unit, Pellegrin Hospital, F-33000, Bordeaux, France
| | - Fatima M'Zali
- UMR 5234 CNRS, Bordeaux University, F-33000, Bordeaux, France
| | - Agnès Lasheras
- Univ. Bordeaux, CHU Bordeaux, Hygiène hospitalière, F-33000, Bordeaux, France
| | - Jean-Ralph Zahar
- Unité INSERM - IAME UMR 1137, Université Paris-13, Bobigny, France
| | - Anne-Marie Rogues
- Univ. Bordeaux, CHU Bordeaux, Hygiène hospitalière, F-33000, Bordeaux, France.,Univ. Bordeaux, Inserm, Bordeaux Population Health Research Center, team pharmacoepidemiology, UMR 1219, F-33000, Bordeaux, France
| | - Didier Gruson
- CHU Bordeaux, Medical Intensive Care Unit, Pellegrin Hospital, F-33000, Bordeaux, France
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Vargas-Alzate CA, Higuita-Gutiérrez LF, Jiménez-Quiceno JN. Direct medical costs of urinary tract infections by Gram-negative bacilli resistant to beta-lactams in a tertiary care hospital in Medellín, Colombia. BIOMEDICA : REVISTA DEL INSTITUTO NACIONAL DE SALUD 2019; 39:35-49. [PMID: 31529847 DOI: 10.7705/biomedica.v39i1.3981] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Indexed: 06/10/2023]
Abstract
Introduction: Urinary tract infections are very frequent in the hospital environment and given the emergence of antimicrobial resistance, they have made care processes more complex and have placed additional pressure on available healthcare resources. Objective: To describe and compare excess direct medical costs of urinary tract infections due to Klebsiella pneumoniae, Enterobacter cloacae and Pseudomonas aeruginosa resistant to beta-lactams. Materials and methods: A cohort study was conducted in a third level hospital in Medellín, Colombia, from October, 2014, to September, 2015. It included patients with urinary tract infections caused by beta-lactam-susceptible bacteria, third and fourth generation cephalosporin-resistant, as well as carbapenem-resistant. Costs were analyzed from the perspective of the health system. Clinical-epidemiological information was obtained from medical records and the costs were calculated using standard tariff manuals. Excess costs were estimated with multivariate analyses. Results: We included 141 patients: 55 (39%) were sensitive to beta-lactams, 54 (38.3%) were resistant to cephalosporins and 32 (22.7%) to carbapenems. The excess total adjusted costs of patients with urinary tract infections due to cephalosporin- and carbapenem-resistant bacteria were US$ 193 (95% confidence interval (CI): US$ -347-734) and US$ 633 (95% CI: US$ -50-1316), respectively, compared to the group of patients with beta-lactam sensitive urinary tract infections. The differences were mainly found in the use of broad-spectrum antibiotics such as meropenem, colistin, and fosfomycin. Conclusion: Our results show a substantial increase in the direct medical costs of patients with urinary tract infections caused by beta-lactam-resistant Gram-negative bacilli (cephalosporins and carbapenems). This situation is of particular concern in endemic countries such as Colombia, where the high frequencies of urinary tract infections and the resistance to beta-lactam antibiotics can generate a greater economic impact on the health sector.
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Affiliation(s)
- Carlos Andrés Vargas-Alzate
- Línea de Epidemiología Molecular Bacteriana, Grupo de Microbiología Básica y Aplicada, Escuela de Microbiología, Universidad de Antioquia, Medellín, Colombia.
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Distribution and molecular characterization of beta-lactamases in Gram-negative bacteria in Colombia, 2001-2016. ACTA ACUST UNITED AC 2019; 39:199-220. [PMID: 31529860 DOI: 10.7705/biomedica.v39i3.4351] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Indexed: 12/18/2022]
Abstract
Beta-lactamases are enzymes with hydrolytic activity over beta-lactam antibiotics and they are the main resistance mechanism in Gram-negative bacteria. Extended-spectrum beta-lactamases (ESBL), AmpC, and carbapenemases have the greatest clinical and epidemiological impact in hospital settings. The increasing frequency and worldwide spread of these enzymes have limited the therapeutic options in hospital-acquired infections and those originating in the community.
In Colombia, surveillance networks and research groups began studying them in the late 90s. Different variants of these enzymes have been molecularly characterized and their high prevalence and dissemination in medium and high complexity hospitals, along with a high clinical impact, have been reported. Furthermore, many studies in Colombia have evidenced high endemicity for some of these beta-lactamases, which requires an urgent implementation of antimicrobial stewardship programs in order to preserve the few therapeutic options and infection control strategies to prevent and limit their dissemination.
In this publication, we carried out a review of the different enzyme variants, geographic distribution, and molecular characterization of these beta-lactamases in Colombia. Additionally, we describe the available information in the literature regarding studies conducted between the late 1990s and 2016, which provide an overview of the beta-lactamases circulating in different regions of Colombia, their increase over time, and their clinical implications.
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Burnham JP, Rojek RP, Kollef MH. Catheter removal and outcomes of multidrug-resistant central-line-associated bloodstream infection. Medicine (Baltimore) 2018; 97:e12782. [PMID: 30334966 PMCID: PMC6211864 DOI: 10.1097/md.0000000000012782] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Central-line-associated bloodstream infections (CLABSIs) are responsible for ∼1/3 of all deaths from healthcare-associated infections in the United States. Of these, multidrug-resistant organisms (MDROs) are responsible for 20% to 67%. However, whether catheter removal affects clinical outcomes for MDRO CLABSIs has not been studied. Our objective was to determine the relationship between failure to remove a central venous catheter (CVC) and 30-day all-cause mortality in patients with MDRO CLABSIs. We used a retrospective cohort from Barnes-Jewish Hospital (1/1/2009-10/1/2015) to study patients with a multidrug-resistant Staphylococcus aureus, Enterococcus species, Enterobacteriaceae, Acinetobacter species, or Pseudomonas aeruginosa CLABSI. Risk factors for 30-day mortality, including catheter removal, were assessed for association with 30-day mortality using Cox proportional hazards models. The CLABSIs were assessed prospectively at the time of occurrence by infection prevention specialists. A total of 430 patients met inclusion criteria, 173 (40.2%) with Enterococcus, 116 (27.0%) Enterobacteriaceae, 81 (18.8%) S aureus, 44 (10.2%) polymicrobial, 11 (2.6%) P aeruginosa, and 5 (1.2%) Acinetobacter CLABSIs. Removal of a CVC occurred in 50.2% of patients, of which 4.2% died by 30 days (n = 9). For patients whose CVC remained in place, 45.3% died (n = 97). Failure to remove a CVC was strongly associated with 30-day all-cause mortality with a hazard ratio of 13.5 (6.8-26.7), P < .001. Other risk factors for 30-day mortality included patient comorbidities (cardiovascular disease, congestive heart failure, cirrhosis), and being in an intensive care unit at the time of MDRO isolation. Failure to remove a CVC was strongly associated with 30-day all-cause mortality for patients with MDRO CLABSIs in this single center retrospective cohort. This suggests that patients presenting with MDRO CLABSIs should all undergo CVC removal.
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Affiliation(s)
- Jason P. Burnham
- Division of Infectious Diseases, Washington University School of Medicine
| | | | - Marin H. Kollef
- Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, St Louis, MO
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Puerta-Alcalde P, Cardozo C, Suárez-Lledó M, Rodríguez-Núñez O, Morata L, Fehér C, Marco F, Del Río A, Martínez JA, Mensa J, Rovira M, Esteve J, Soriano A, Garcia-Vidal C. Current time-to-positivity of blood cultures in febrile neutropenia: a tool to be used in stewardship de-escalation strategies. Clin Microbiol Infect 2018; 25:447-453. [PMID: 30096417 DOI: 10.1016/j.cmi.2018.07.026] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 07/19/2018] [Accepted: 07/21/2018] [Indexed: 01/24/2023]
Abstract
OBJECTIVES We aimed to describe the current time-to-positivity (TTP) of blood cultures in individuals with onco-haematological diseases with febrile neutropenia. We assessed the probability of having a multidrug-resistant Gram-negative bacilli (MDR-GNB) bloodstream infection (BSI) 24 h after cultures were taken, to use this information for antibiotic de-escalation strategies. METHODS BSI episodes were prospectively collected (2003-2017). When a patient experienced more than one BSI, only one episode was randomly chosen. Time elapsed from the beginning of incubation to a positive reading was observed; TTP was recorded when the first bottle had a positive result. RESULTS Of the 850 patient-unique episodes, 323 (38%) occurred in acute leukaemia, 185 (21.8%) in non-Hodgkin's lymphoma and 144 (16.9%) in solid neoplasms. Coagulase-negative staphylococci (225; 26.5%), Escherichia coli (207; 26.1%), Pseudomonas aeruginosa (136; 16%), Enterococcus spp. (81; 9.5%) and Klebsiella pneumoniae (67; 7.9%), were the most frequent microorganisms isolated. MDR-GNB were documented in 126 (14.8%) episodes. Median TTP was 12 h (interquartile range 9-16.5 h). Within the first 24 h, 92.1% of blood cultures were positive (783/850). No MDR-GNB was positive over 24 h. Of the 67 (7.9%) episodes with a TTP ≥24 h, 25 (37.3%) occurred in patients who were already receiving active antibiotics against the isolated pathogen. Most common isolations with TTP ≥24 h were coagulase-negative staphylococci, candidaemia and a group of anaerobic GNB. CONCLUSIONS Currently, the vast majority of BSI in individuals with onco-haematological diseases with febrile neutropenia have a TTP <24 h, including all episodes caused by MDR-GNB. Our results support reassessing empiric antibiotic treatment in neutropenic patients at 24 h, to apply antibiotic stewardship de-escalation strategies.
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Affiliation(s)
- P Puerta-Alcalde
- Infectious Diseases Department, Hospital Clínic-IDIBAPS, Barcelona, Spain
| | - C Cardozo
- Infectious Diseases Department, Hospital Clínic-IDIBAPS, Barcelona, Spain
| | - M Suárez-Lledó
- Haematology Department, Hospital Clínic-IDIBAPS, Barcelona, Spain
| | - O Rodríguez-Núñez
- Infectious Diseases Department, Hospital Clínic-IDIBAPS, Barcelona, Spain
| | - L Morata
- Infectious Diseases Department, Hospital Clínic-IDIBAPS, Barcelona, Spain
| | - C Fehér
- Infectious Diseases Department, Hospital Clínic-IDIBAPS, Barcelona, Spain
| | - F Marco
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain; Microbiology Department, Centre Diagnòstic Biomèdic, Hospital Clínic, Barcelona, Spain
| | - A Del Río
- Infectious Diseases Department, Hospital Clínic-IDIBAPS, Barcelona, Spain
| | - J A Martínez
- Infectious Diseases Department, Hospital Clínic-IDIBAPS, Barcelona, Spain; University of Barcelona, Barcelona, Spain
| | - J Mensa
- Infectious Diseases Department, Hospital Clínic-IDIBAPS, Barcelona, Spain
| | - M Rovira
- Haematology Department, Hospital Clínic-IDIBAPS, Barcelona, Spain; University of Barcelona, Barcelona, Spain
| | - J Esteve
- Haematology Department, Hospital Clínic-IDIBAPS, Barcelona, Spain; University of Barcelona, Barcelona, Spain
| | - A Soriano
- Infectious Diseases Department, Hospital Clínic-IDIBAPS, Barcelona, Spain; University of Barcelona, Barcelona, Spain
| | - C Garcia-Vidal
- Infectious Diseases Department, Hospital Clínic-IDIBAPS, Barcelona, Spain; University of Barcelona, Barcelona, Spain.
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Skowron KB, Shogan BD, Rubin DT, Hyman NH. The New Frontier: the Intestinal Microbiome and Surgery. J Gastrointest Surg 2018; 22:1277-1285. [PMID: 29633119 DOI: 10.1007/s11605-018-3744-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Accepted: 03/12/2018] [Indexed: 01/31/2023]
Abstract
The microbiome exerts a remarkable effect on human physiology. The study of the human-microbiome relationship is a burgeoning field with great potential to improve our understanding of health and disease. In this review, we address common surgical problems influenced by the human microbiome and explore what is thus far known about this relationship. These include inflammatory bowel disease, colorectal neoplasms, and diverticular disease. We will also discuss the effect of the microbiome on surgical complications, specifically anastomotic leak. We hope that further research in this field will enlighten our management of these and other surgical problems.
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Affiliation(s)
- Kinga B Skowron
- Department of Surgery, University of Chicago Medicine, 5841 S. Maryland Avenue, MC 5095, Chicago, IL, 60637, USA
| | - Benjamin D Shogan
- Department of Surgery, University of Chicago Medicine, 5841 S. Maryland Avenue, MC 5095, Chicago, IL, 60637, USA.
| | - David T Rubin
- Department of Medicine, Section of Gastroenterology, Hepatology and Nutrition, University of Chicago Medicine, Chicago, IL, USA
| | - Neil H Hyman
- Department of Surgery, University of Chicago Medicine, 5841 S. Maryland Avenue, MC 5095, Chicago, IL, 60637, USA
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Zhen X, Li Y, Chen Y, Dong P, Liu S, Dong H. Effect of multiple drug resistance on total medical costs among patients with intra-abdominal infections in China. PLoS One 2018; 13:e0193977. [PMID: 29590138 PMCID: PMC5873998 DOI: 10.1371/journal.pone.0193977] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 02/22/2018] [Indexed: 11/24/2022] Open
Abstract
Background Multiple drug resistant (MDR) intra-abdominal infections (IAIs) are associated with notable direct and societal costs. As previous studies have not considered the impact of MDR on the total medical costs (TMCs) of IAIs, the present one examines this, as well as further estimates the additional costs at a national level. Methods This is a retrospective study. Firstly, we randomly selected a sample of 40% of all inpatients discharged between 2014 and 2015 from a teaching hospital, due to limits in budget and the large number of patients. Then, we manually selected 254 patients with IAIs according to the International Classification of Disease, 10th revision, using electronic medical records. Eventually, 101 patients with IAIs (64 MDR patients and 37 non-MDR patients) were included after excluding cases without laboratory test results, any pathogens detected, or antimicrobial resistant pathogens. Univariate analysis and a generalized linear model were applied to assess the parameters associated with TMCs. Results Compared to non-MDR patients, those with MDR pathogens were significantly associated with higher TMCs, higher antimicrobial costs, higher antimicrobial usage, larger number of pathogens, and longer length of stay and were more likely to have insurance and combination antimicrobial therapy. In addition, the average TMC among patients with MDR pathogens was ¥ 131801, which is ¥ 90201 higher than those without MDR pathogens. If our results are applied to the whole country, the sum of all attributable TMCs was ¥ 37 billion. The societal costs, furthermore, were ¥111 billion in 2015. Conclusion Our results provide information that should lead to increased efforts to reduce inappropriate antimicrobial therapy, in order to decrease the emergence of MDR pathogens and to reduce their economic burden.
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Affiliation(s)
- Xuemei Zhen
- Center for Health Policy Studies, School of Public Health, Zhejiang University School of Medicine, Hangzhou City, Zhejiang Province, China
| | - Yuanyuan Li
- Center for Health Policy Studies, School of Public Health, Zhejiang University School of Medicine, Hangzhou City, Zhejiang Province, China
| | - Yixi Chen
- Pfizer Investment Co. Ltd., Beijing, China
| | - Peng Dong
- Pfizer Investment Co. Ltd., Beijing, China
| | - Stephanie Liu
- Center for Health Policy Studies, School of Public Health, Zhejiang University School of Medicine, Hangzhou City, Zhejiang Province, China
| | - Hengjin Dong
- Center for Health Policy Studies, School of Public Health, Zhejiang University School of Medicine, Hangzhou City, Zhejiang Province, China
- * E-mail:
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Govender K, Sharma S, Jessee W, Nagaraju K, Pearse NJ, Chhetri P, Bodenstab EM, Yu P, Srinivas SC. Leadership and Task Shifting to Address the Challenges of Antimicrobial Resistance in South Africa. ASIAN JOURNAL OF PHARMACEUTICAL RESEARCH AND HEALTH CARE 2018. [DOI: 10.18311/ajprhc/2018/16265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Burnham JP, Olsen MA, Stwalley D, Kwon JH, Babcock HM, Kollef MH. Infectious Diseases Consultation Reduces 30-Day and 1-Year All-Cause Mortality for Multidrug-Resistant Organism Infections. Open Forum Infect Dis 2018; 5:ofy026. [PMID: 29577058 PMCID: PMC5852998 DOI: 10.1093/ofid/ofy026] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 01/22/2018] [Indexed: 12/16/2022] Open
Abstract
Background Multidrug-resistant organism (MDRO) infections are associated with high mortality and readmission rates. Infectious diseases (ID) consultation improves clinical outcomes for drug-resistant Staphylococcus aureus bloodstream infections. Our goal was to determine the association between ID consultation and mortality following various MDRO infections. Methods This study was conducted with a retrospective cohort (January 1, 2006–October 1, 2015) at an academic tertiary referral center. We identified patients with MDROs in a sterile site or bronchoalveolar lavage/bronchial wash culture. Mortality and readmissions within 1 year of index culture were identified, and the association of ID consultation with these outcomes was determined using Cox proportional hazards models with inverse weighting by the propensity score for ID consultation. Results A total of 4214 patients with MDRO infections were identified. ID consultation was significantly associated with reductions in 30-day and 1-year mortality for resistant S. aureus (hazard ratio [HR], 0.48; 95% confidence interval [CI], 0.36–0.63; and HR, 0.73, 95% CI, 0.61–0.86) and Enterobacteriaceae (HR, 0.41; 95% CI, 0.27–0.64; and HR, 0.74; 95% CI, 0.59–0.94), and 30-day mortality for polymicrobial infections (HR, 0.51; 95% CI, 0.31–0.86) but not Acinetobacter or Pseudomonas. For resistant Enterococcus, ID consultation was marginally associated with decreased 30-day mortality (HR, 0.81; 95% CI, 0.62–1.06). ID consultation was associated with reduced 30-day readmission for resistant Enterobacteriaceae. Conclusions ID consultation was associated with significant reductions in 30-day and 1-year mortality for resistant S. aureus and Enterobacteriaceae, and 30-day mortality for polymicrobial infections. There was no association between ID consultation and mortality for patients with resistant Pseudomonas, Acinetobacter, or Enterococcus, possibly due to small sample sizes. Our results suggest that ID consultation may be beneficial for patients with some MDRO infections.
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Affiliation(s)
- Jason P Burnham
- Division of Infectious Diseases, Washington University School of Medicine, St. Louis, Missouri
| | - Margaret A Olsen
- Division of Infectious Diseases, Washington University School of Medicine, St. Louis, Missouri
| | - Dustin Stwalley
- Division of Infectious Diseases, Washington University School of Medicine, St. Louis, Missouri
| | - Jennie H Kwon
- Division of Infectious Diseases, Washington University School of Medicine, St. Louis, Missouri
| | - Hilary M Babcock
- Division of Infectious Diseases, Washington University School of Medicine, St. Louis, Missouri
| | - Marin H Kollef
- Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, St. Louis, Missouri
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Extensively drug-resistant Acinetobacter baumannii bacteraemia in a multidisciplinary intensive care unit during a 6-year period: Risk factors for fulminant sepsis. J Glob Antimicrob Resist 2018; 14:51-57. [PMID: 29471109 DOI: 10.1016/j.jgar.2018.02.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 10/20/2017] [Accepted: 02/11/2018] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVES This study aimed to determine potential host-, pathogen-, infection- and treatment-related risk factors that might predict a fulminant fatal course of bacteraemia caused by extensively drug-resistant Acinetobacter baumannii (XDR-Aba). METHODS Eighty-seven patients with monomicrobial growth of XDR-Aba in blood cultures within a 6-year period (2011-2016) were studied. Patients were divided into three groups according to ICU outcome: Group A (n=40) consisted of patients who survived; Group B (n=10) included patients with fulminant sepsis who died early (≤48h); and Group C (n=37) included patients who died later (>48h) after the onset of bacteraemia. RESULTS Regarding patient co-morbidities, patients who died from fulminant XDR-Aba bacteraemia had a significantly higher prevalence of chronic renal failure compared with patients who survived (40.0% vs. 7.5%; P=0.029). Patients with fulminant sepsis showed more severe organ dysfunction based on SOFA score compared with survivors (10.83±2.93 vs. 6.65±3.6; P=0.013). The primary to secondary bacteraemia ratio and appropriate treatment were similar among the three outcome groups. Patients with fulminant bacteraemia displayed higher rates of colistin-, tigecycline- and pandrug-resistant strains, although not statistically significant. CONCLUSIONS Patients suffering from a fulminant course of XDR-Aba bacteraemia showed significantly higher rates of chronic renal failure and multiple organ dysfunction. Resistance patterns of XDR-Aba isolates and receipt of appropriate treatment did not affect outcomes. Further studies including larger samples of patients along with investigation of specific virulence determinants of individual Aba strains are needed.
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Vargas-Alzate CA, Higuita-Gutiérrez LF, López-López L, Cienfuegos-Gallet AV, Jiménez Quiceno JN. High excess costs of infections caused by carbapenem-resistant Gram-negative bacilli in an endemic region. Int J Antimicrob Agents 2017; 51:601-607. [PMID: 29277527 DOI: 10.1016/j.ijantimicag.2017.12.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 12/03/2017] [Accepted: 12/16/2017] [Indexed: 11/30/2022]
Abstract
The financial burden of antibiotic resistance is a serious concern worldwide. The aim of this study was to describe the excess costs associated with pneumonia, bacteraemia, surgical site infections and intra-abdominal infections (IAIs) caused by carbapenem-resistant Gram-negative bacilli in Medellín, Colombia, an endemic region for carbapenem resistance. A cohort study was conducted in a third-level hospital from 2014-2015. All patients with carbapenem-resistant and carbapenem-susceptible Gram-negative bacterial infections were included. Pharmaceutical, medical and surgical direct costs were described from the health system perspective. Excess costs were estimated from generalised linear models with gamma distribution and adjusted for variables that could affect the cost difference. A total of 218 patients were enrolled, 48 (22.0%) of whom were infected with carbapenem-resistant bacteria. IAIs were the most frequent. The adjusted total excess cost was US$3966 [95% confidence interval (CI) US$1684-6249], with a significantly higher cost for antibiotics, followed by hospital stay, laboratory tests and interconsultation. The highest excess cost was attributed mainly to the use of broad-spectrum antibiotics (US$1827, 95% CI US$1005-2648), followed by length of hospital stay (US$1015, 95% CI US$163-1867). The results of this study highlight the importance of designing antimicrobial stewardship programmes and infection control strategies in endemic regions to reduce the financial threat of antimicrobial resistance to health systems.
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Affiliation(s)
- Carlos Andrés Vargas-Alzate
- Línea de Epidemiología Molecular Bacteriana, Grupo de Microbiología Básica y Aplicada, Universidad de Antioquia, Medellín, Colombia
| | - Luis Felipe Higuita-Gutiérrez
- Línea de Epidemiología Molecular Bacteriana, Grupo de Microbiología Básica y Aplicada, Universidad de Antioquia, Medellín, Colombia; Grupo de Investigación Salud y Sostenibilidad, Escuela de Microbiología, Universidad de Antioquia, Medellín, Colombia
| | - Lucelly López-López
- Línea de Epidemiología Molecular Bacteriana, Grupo de Microbiología Básica y Aplicada, Universidad de Antioquia, Medellín, Colombia; Facultad de Medicina, Universidad Pontificia Bolivariana, Medellín, Colombia
| | - Astrid Vanessa Cienfuegos-Gallet
- Línea de Epidemiología Molecular Bacteriana, Grupo de Microbiología Básica y Aplicada, Universidad de Antioquia, Medellín, Colombia
| | - Judy Natalia Jiménez Quiceno
- Línea de Epidemiología Molecular Bacteriana, Grupo de Microbiología Básica y Aplicada, Universidad de Antioquia, Medellín, Colombia.
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Cantón R, Gómez G. de la Pedrosa E. Impacto económico de los métodos de diagnóstico rápido en Microbiología Clínica: precio de la prueba o impacto clínico global. Enferm Infecc Microbiol Clin 2017; 35:659-666. [DOI: 10.1016/j.eimc.2017.09.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 09/13/2017] [Indexed: 12/19/2022]
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Hübner N, Dittmann K, Begunk R, Kramer A. Infection control measures and prevalence of multidrug-resistant organisms in non-hospital care settings in northeastern Germany: results from a one-day point prevalence study. J Hosp Infect 2017. [DOI: 10.1016/j.jhin.2017.08.002 epub 2017 aug 8.2015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Hurley RH, Douglas CM, Montgomery J, Clark LJ. The hidden cost of deep neck space infections. Ann R Coll Surg Engl 2017; 100:129-134. [PMID: 29046089 DOI: 10.1308/rcsann.2017.0193] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Introduction The incidence of deep neck space infection (DNSI) is rising and appears to be related to falling rates of tonsillectomy. The purpose of this study was to assess demographics of patients presenting with DNSI and the financial burden to the National Health Service (NHS). Methods Data were collected retrospectively on patients aged over 16 years admitted to NHS Greater Glasgow and Clyde with DNSI between 2012 and 2016. Demographics, aetiology and use of hospital resources were reviewed. The cost of hospital admissions was calculated using data from NHS Scotland's Information Services Division, the local diagnostics division and the British National Formulary. Results Seventy-four patients were admitted with DNSI during the study period. Forty (54%) were male. The mean age was 44.0 years (range: 16-86 years). The most frequent source of infection was the tonsil (n=30, 40.5%). The most common infective organism was Streptococcus constellatus (n=9, 12.2%). The mean length of stay was 11 days. Fifty-five patients (74.3%) required operative intervention. The mean cost of admission per patient was £5,700 (range: £332-£46,700). Conclusions This study highlights the high cost burden of DNSI to the NHS. The incidence of DNSI in Glasgow has risen over the study period; contributing factors may include the reduced tonsillectomy rate and a reduction in antibiotic prescribing. As the incidence of DNSI continues to rise, there will be an increase in cost to the NHS, which must be planned for.
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Hur EY, Jin YJ, Jin TX, Lee SM. Development and evaluation of the automated risk assessment system for multidrug-resistant organisms (autoRAS-MDRO). J Hosp Infect 2017; 98:202-211. [PMID: 28807836 DOI: 10.1016/j.jhin.2017.08.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 08/06/2017] [Indexed: 12/29/2022]
Abstract
BACKGROUND A high proportion of infections acquired in hospitals are caused by multidrug-resistant organisms (MDROs). The priority in MDRO prevention is to detect high-risk patients and implement preventive intervention as soon as possible. AIM To develop an automated risk assessment system for MDROs (autoRAS-MDRO) to screen for patients at MDRO infection risk and evaluate the predictive validity of the autoRAS-MDRO. METHODS Data for 4200 variables were extracted from the electronic health records (EHRs) for constructing the MDRO risk-scoring algorithm, which was based on a logistic regression model. The autoRAS-MDRO was designed such that the MDRO risk classification (high, moderate, low risk) could be automatically displayed on the nursing Kardex screen in the EHRs system. For the development of the MDRO risk-scoring algorithm, 1000 patients with MDROs and 4000 patients without MDROs were selected; similarly, for the evaluation, 2173 and 8692 patients with and without MDROs, respectively, were selected. FINDINGS The predictive validity of the autoRAS-MDRO was as follows: (i) at the 6-month evaluation: sensitivity, 81%; specificity, 79%; positive predictive value (PPV), 49%; negative predictive value (NPV), 94%; and Youden index, 0.60; (ii) at the 12-month evaluation: sensitivity 79%, specificity 78%, PPV 47%, NPV 94%, and Youden index, 0.57. CONCLUSION The autoRAS-MDRO had moderate predictive validity. It could be useful in redirecting nurses' time and efforts required for MDRO risk assessment and implementation of infection control measures, and in reducing the incidence of MDRO infection in hospitals, thereby contributing to patient safety.
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Affiliation(s)
- E Y Hur
- College of Nursing, The Catholic University of Korea, Seoul, South Korea
| | - Y J Jin
- College of Nursing, The Catholic University of Korea, Seoul, South Korea
| | - T X Jin
- College of Nursing, The Catholic University of Korea, Seoul, South Korea
| | - S M Lee
- College of Nursing, The Catholic University of Korea, Seoul, South Korea.
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Infection control measures and prevalence of multidrug-resistant organisms in non-hospital care settings in northeastern Germany: results from a one-day point prevalence study. J Hosp Infect 2017; 97:234-240. [PMID: 28797758 DOI: 10.1016/j.jhin.2017.08.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 08/01/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND Much of the existing literature on the epidemiology of multidrug-resistant bacterial organisms (MDROs) and infection control measures still concentrates on hospital care settings. AIM To pilot a cross-sectional survey in long-term care facilities (LTCFs), rehabilitation clinics, and homecare services to assess the prevalence of MDROs, structural data on infection control, and referral links between care settings in the state of Mecklenburg-West Pomerania, Germany, in 2015. METHODS A voluntary, anonymous, point prevalence survey, using routine microbiological and structural data (MDRO screening strategies) and the compliance of referring facilities with MRDO patient transfer sheets that are mandatory in Germany. Data from 39 facilities including 24 LTCFs, nine rehabilitation clinics, and six homecare services were analysed. FINDINGS The most reported pathogen was meticillin-resistant Staphylococcus aureus (MRSA) with a prevalence of 2.09% in homecare services, 1.43% in LTCFs, and 0.53% in rehabilitation clinics. Missing information on the MRDO status in the referral documents was a relevant problem in all facility types. CONCLUSION Our results imply strong epidemiological links between acute care hospitals and non-clinical care settings. This underlines that successful efforts to curb antimicrobial resistance must not be limited to single facilities but include different settings that are linked by referral networks. Compared to surveys in clinical settings that used the same approach, the prevalence of MRSA is comparable to that of hospitals. By contrast, care facilities lack the infection control resources of hospitals.
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Karampatakis T, Geladari A, Politi L, Antachopoulos C, Iosifidis E, Tsiatsiou O, Karyoti A, Papanikolaou V, Tsakris A, Roilides E. Cluster-distinguishing genotypic and phenotypic diversity of carbapenem-resistant Gram-negative bacteria in solid-organ transplantation patients: a comparative study. J Med Microbiol 2017; 66:1158-1169. [PMID: 28758635 DOI: 10.1099/jmm.0.000541] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Purpose. Solid-organ transplant recipients may display high rates of colonization and/or infection by multidrug-resistant bacteria. We analysed and compared the phenotypic and genotypic diversity of carbapenem-resistant (CR) strains of Klebsiella pneumoniae, Pseudomonas aeruginosa and Acinetobacter baumannii isolated from patients in the Solid Organ Transplantation department of our hospital.Methodology. Between March 2012 and August 2013, 56 CR strains from various biological fluids underwent antimicrobial susceptibility testing with VITEK 2, molecular analysis by PCR amplification and genotypic analysis with pulsed-field gel electrophoresis (PFGE). They were clustered according to antimicrobial drug susceptibility and genotypic profiles. Diversity analyses were performed by calculating Simpson's diversity index and applying computed rarefaction curves.Results/Key findings. Among K. pneumoniae, KP-producers predominated (57.1 %). VIM and OXA-23 carbapenemases prevailed among P. aeruginosa and A. baumannii (89.4 and 88.9 %, respectively). KPC-producing K. pneumoniae and OXA-23 A. baumannii were assigned in single PFGE pulsotypes. VIM-producing P. aeruginosa generated multiple pulsotypes. CR K. pneumoniae strains displayed phenotypic diversity in tigecycline, colistin (CS), amikacin (AMK), gentamicin (GEN) and co-trimoxazole (SXT) (16 clusters); P. aeruginosa displayed phenotypic diversity in cefepime (FEP), ceftazidime, aztreonam, piperacillin, piperacillin-tazobactam, AMK, GEN and CS (9 clusters); and A. baumannii displayed phenotypic diversity in AMK, GEN, SXT, FEP, tobramycin and rifampicin (8 clusters). The Simpson diversity indices for the interpretative phenotype and PFGE analysis were 0.89 and 0.6, respectively, for K. pneumoniae strains (P<0.001); 0.77 and 0.6 for P. aeruginosa (P=0.22); and 0.86 and 0.19 for A. baumannii (P=0.004).Conclusion. The presence of different antimicrobial susceptibility profiles does not preclude the possibility that two CR K. pneumoniae or A. baumannii isolates are clonally related.
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Affiliation(s)
- Theodoros Karampatakis
- Infectious Disease Unit, 3rd Department of Pediatrics, Medical Faculty, Aristotle University School of Health Sciences, Hippokration General Hospital, Thessaloniki, Greece.,Microbiology Department, Hippokration General Hospital, Thessaloniki, Greece
| | - Anastasia Geladari
- Infectious Disease Unit, 3rd Department of Pediatrics, Medical Faculty, Aristotle University School of Health Sciences, Hippokration General Hospital, Thessaloniki, Greece
| | - Lida Politi
- Microbiology Department, National and Kapodistrian University School of Medicine, Athens, Greece
| | - Charalampos Antachopoulos
- Infectious Disease Unit, 3rd Department of Pediatrics, Medical Faculty, Aristotle University School of Health Sciences, Hippokration General Hospital, Thessaloniki, Greece.,Infection Control Committee, Hippokration General Hospital, Thessaloniki, Greece
| | - Elias Iosifidis
- Infectious Disease Unit, 3rd Department of Pediatrics, Medical Faculty, Aristotle University School of Health Sciences, Hippokration General Hospital, Thessaloniki, Greece.,Infection Control Committee, Hippokration General Hospital, Thessaloniki, Greece
| | - Olga Tsiatsiou
- Infectious Disease Unit, 3rd Department of Pediatrics, Medical Faculty, Aristotle University School of Health Sciences, Hippokration General Hospital, Thessaloniki, Greece.,Infection Control Committee, Hippokration General Hospital, Thessaloniki, Greece
| | - Aggeliki Karyoti
- Microbiology Department, Hippokration General Hospital, Thessaloniki, Greece.,Infection Control Committee, Hippokration General Hospital, Thessaloniki, Greece
| | - Vasileios Papanikolaou
- Solid Organ Transplantation Department, Medical Faculty, Aristotle University School of Health Sciences, Hippokration General Hospital, Thessaloniki, Greece
| | - Athanassios Tsakris
- Microbiology Department, National and Kapodistrian University School of Medicine, Athens, Greece
| | - Emmanuel Roilides
- Infection Control Committee, Hippokration General Hospital, Thessaloniki, Greece.,Infectious Disease Unit, 3rd Department of Pediatrics, Medical Faculty, Aristotle University School of Health Sciences, Hippokration General Hospital, Thessaloniki, Greece
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Karampatakis T, Antachopoulos C, Tsakris A, Roilides E. Molecular epidemiology of carbapenem-resistant Acinetobacter baumannii in Greece: an extended review (2000–2015). Future Microbiol 2017; 12:801-815. [DOI: 10.2217/fmb-2016-0200] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Carbapenem-resistant Acinetobacter baumannii (CRAB) is endemic in Greece. CRAB initially emerged in 2000 and since then, carbapenemases still have a crucial role in CRAB appearance, except for a few cases resulting from efflux pump or outer-membrane protein mechanisms. OXA-type carbapenemases present the highest prevalence worldwide and bla OXA-23-like and bla OXA-58-like are the most important genes found; VIM-yielding CRAB have also been detected, while a single CRAB isolate producing NDM has quite recently emerged in Greece. The predominant OXA-23 producers are associated with multilocus sequence typing Pasteur scheme sequence type 2 clonal strains of the international clone II. The emergence of colistin-resistant CRAB has complicated the treatment of such infections and the interpretation of susceptibility data. Infection control measures and adjusted antimicrobial treatment strategies could confine CRAB spread. The aim of this review is to go through the molecular epidemiology of CRAB, in an endemic area and highlight its potential future evolution.
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Affiliation(s)
- Theodoros Karampatakis
- Infectious Diseases Unit, 3rd Department of Pediatrics, Medical Faculty, School of Health Sciences, Aristotle University, Hippokration General Hospital, Thessaloniki, Greece
| | - Charalampos Antachopoulos
- Infectious Diseases Unit, 3rd Department of Pediatrics, Medical Faculty, School of Health Sciences, Aristotle University, Hippokration General Hospital, Thessaloniki, Greece
| | - Athanassios Tsakris
- Microbiology Department, National & Kapodistrian University School of Medicine, Athens, Greece
| | - Emmanuel Roilides
- Infectious Diseases Unit, 3rd Department of Pediatrics, Medical Faculty, School of Health Sciences, Aristotle University, Hippokration General Hospital, Thessaloniki, Greece
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Tillotson GS, Zinner SH. Burden of antimicrobial resistance in an era of decreasing susceptibility. Expert Rev Anti Infect Ther 2017; 15:663-676. [DOI: 10.1080/14787210.2017.1337508] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | - Stephen H. Zinner
- Department of Medicine, Mount Auburn Hospital, Harvard Medical School, Cambridge, MA, USA
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35
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Geladari A, Karampatakis T, Antachopoulos C, Iosifidis E, Tsiatsiou O, Politi L, Karyoti A, Papanikolaou V, Tsakris A, Roilides E. Epidemiological surveillance of multidrug-resistant gram-negative bacteria in a solid organ transplantation department. Transpl Infect Dis 2017; 19. [DOI: 10.1111/tid.12686] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 10/17/2016] [Accepted: 12/04/2016] [Indexed: 12/16/2022]
Affiliation(s)
- Anastasia Geladari
- Solid Organ Transplantation Department; Medical Faculty; Aristotle University School of Health Sciences; Hippokration General Hospital; Thessaloniki Greece
| | | | - Charalampos Antachopoulos
- Third Department of Pediatrics; Medical Faculty; Aristotle University School of Health Sciences; Hippokration General Hospital; Thessaloniki Greece
- Infection Control Committee; Hippokration General Hospital; Thessaloniki Greece
| | - Elias Iosifidis
- Third Department of Pediatrics; Medical Faculty; Aristotle University School of Health Sciences; Hippokration General Hospital; Thessaloniki Greece
- Infection Control Committee; Hippokration General Hospital; Thessaloniki Greece
| | - Olga Tsiatsiou
- Third Department of Pediatrics; Medical Faculty; Aristotle University School of Health Sciences; Hippokration General Hospital; Thessaloniki Greece
- Infection Control Committee; Hippokration General Hospital; Thessaloniki Greece
| | - Lida Politi
- Microbiology Department; National and Kapodistrian University School of Medicine; Athens Greece
| | - Aggeliki Karyoti
- Microbiology Department; Hippokration General Hospital; Thessaloniki Greece
| | - Vasilios Papanikolaou
- Solid Organ Transplantation Department; Medical Faculty; Aristotle University School of Health Sciences; Hippokration General Hospital; Thessaloniki Greece
| | - Athanassios Tsakris
- Microbiology Department; National and Kapodistrian University School of Medicine; Athens Greece
| | - Emmanuel Roilides
- Third Department of Pediatrics; Medical Faculty; Aristotle University School of Health Sciences; Hippokration General Hospital; Thessaloniki Greece
- Infection Control Committee; Hippokration General Hospital; Thessaloniki Greece
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36
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Tuerena I, Williams NJ, Nuttall T, Pinchbeck G. Antimicrobial-resistant Escherichia coli in hospitalised companion animals and their hospital environment. J Small Anim Pract 2017; 57:339-47. [PMID: 27385621 DOI: 10.1111/jsap.12525] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 04/26/2016] [Accepted: 05/06/2016] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Antimicrobial resistance is a growing concern with implications for animal health. This study investigated the prevalence of antimicrobial resistance among commensal and environmental Escherichia coli isolated from animals sampled in referral hospitals in the UK. MATERIALS AND METHODS Resistant Escherichia coli isolated from animal faeces and practice environments were tested for susceptibility to antimicrobial agents. PCR and sequencing techniques were used to identify extended spectrum beta-lactamase and AmpC-producer genotypes. RESULTS In total, 333 faecal and 257 environmental samples were collected. Multi-drug resistant Escherichia coli were found in 13·1% of faecal and 8·9% of environmental samples. Extended spectrum beta-lactamase and AmpC genes were identified 14% and 7·7% of faecal samples and 8·6% and 8·6% of environmental samples, respectively. The most common extended spectrum beta-lactamase gene type detected was blaCTX-M -15 , although blaTEM-158 was detected in faecal and environmental samples from one practice. CLINICAL SIGNIFICANCE Escherichia coli resistant to key antimicrobials were isolated from hospitalised animals and the practice environment. We identified the emergence of the inhibitor resistant and extended spectrum beta-lactamase blaTEM-158 in companion animals. Further investigation to determine risk factors for colonisation with antimicrobial-resistant bacteria is needed to provide evidence for antimicrobial stewardship and infection control programmes.
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Affiliation(s)
- I Tuerena
- Department of Epidemiology and Population Health, Institute of Infection and Global Health, University of Liverpool, Neston, CH64 7TE
| | - N J Williams
- Department of Epidemiology and Population Health, Institute of Infection and Global Health, University of Liverpool, Neston, CH64 7TE
| | - T Nuttall
- School of Veterinary Science, Faculty of Health and Life Sciences, University of Liverpool, Neston, CH64 7TE
| | - G Pinchbeck
- Department of Epidemiology and Population Health, Institute of Infection and Global Health, University of Liverpool, Neston, CH64 7TE
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Increased Costs Associated with Bloodstream Infections Caused by Multidrug-Resistant Gram-Negative Bacteria Are Due Primarily to Patients with Hospital-Acquired Infections. Antimicrob Agents Chemother 2017; 61:AAC.01709-16. [PMID: 27993852 DOI: 10.1128/aac.01709-16] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 12/07/2016] [Indexed: 12/15/2022] Open
Abstract
The clinical and economic impacts of bloodstream infections (BSI) due to multidrug-resistant (MDR) Gram-negative bacteria are incompletely understood. From 2009 to 2015, all adult inpatients with Gram-negative BSI at our institution were prospectively enrolled. MDR status was defined as resistance to ≥3 antibiotic classes. Clinical outcomes and inpatient costs associated with the MDR phenotype were identified. Among 891 unique patients with Gram-negative BSI, 292 (33%) were infected with MDR bacteria. In an adjusted analysis, only history of Gram-negative infection was associated with MDR BSI versus non-MDR BSI (odds ratio, 1.60; 95% confidence interval [CI], 1.19 to 2.16; P = 0.002). Patients with MDR BSI had increased BSI recurrence (1.7% [5/292] versus 0.2% [1/599]; P = 0.02) and longer hospital stay (median, 10.0 versus 8.0 days; P = 0.0005). Unadjusted rates of in-hospital mortality did not significantly differ between MDR (26.4% [77/292]) and non-MDR (21.7% [130/599]) groups (P = 0.12). Unadjusted mean costs were 1.62 times higher in MDR than in non-MDR BSI ($59,266 versus $36,452; P = 0.003). This finding persisted after adjustment for patient factors and appropriate empirical antibiotic therapy (means ratio, 1.18; 95% CI, 1.03 to 1.36; P = 0.01). Adjusted analysis of patient subpopulations revealed that the increased cost of MDR BSI occurred primarily among patients with hospital-acquired infections (MDR means ratio, 1.41; 95% CI, 1.10 to 1.82; P = 0.008). MDR Gram-negative BSI are associated with recurrent BSI, longer hospital stays, and increased mean inpatient costs. MDR BSI in patients with hospital-acquired infections primarily account for the increased cost.
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The presence of a single MALDI-TOF mass spectral peak predicts methicillin resistance in staphylococci. Diagn Microbiol Infect Dis 2016; 86:257-261. [DOI: 10.1016/j.diagmicrobio.2016.08.001] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 07/26/2016] [Accepted: 08/02/2016] [Indexed: 11/18/2022]
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MacVane SH. Antimicrobial Resistance in the Intensive Care Unit. J Intensive Care Med 2016; 32:25-37. [DOI: 10.1177/0885066615619895] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 09/30/2015] [Accepted: 11/09/2015] [Indexed: 11/16/2022]
Abstract
Bacterial infections are a frequent cause of hospitalization, and nosocomial infections are an increasingly common condition, particularly within the acute/critical care setting. Infection control practices and new antimicrobial development have primarily focused on gram-positive bacteria; however, in recent years, the incidence of infections caused by gram-negative bacteria has risen considerably in intensive care units. Infections caused by multidrug-resistant (MDR) gram-negative organisms are associated with high morbidity and mortality, with significant direct and indirect costs resulting from prolonged hospitalizations due to antibiotic treatment failures. Of particular concern is the increasing prevalence of antimicrobial resistance to β-lactam antibiotics (including carbapenems) among Pseudomonas aeruginosa and Acinetobacter baumannii and, recently, among pathogens of the Enterobacteriaceae family. Treatment options for infections caused by these pathogens are limited. Antimicrobial stewardship programs focus on optimizing the appropriate use of currently available antimicrobial agents with the goals of improving outcomes for patients with infections caused by MDR gram-negative organisms, slowing the progression of antimicrobial resistance, and reducing hospital costs. Newly approved treatment options are available, such as β-lactam/β-lactamase inhibitor combinations, which significantly extend the armamentarium against MDR gram-negative bacteria.
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Affiliation(s)
- Shawn H. MacVane
- Department of Pharmacy, Medical University of South Carolina, Charleston, SC, USA
- Division of Infectious Diseases, Department of Medicine, Medical University of South Carolina, Charleston, SC, USA
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Horikoshi Y, Higuchi H, Suwa J, Isogai M, Shoji T, Ito K. Impact of computerized pre-authorization of broad spectrum antibiotics in Pseudomonas aeruginosa at a children's hospital in Japan. J Infect Chemother 2016; 22:532-5. [PMID: 27263807 DOI: 10.1016/j.jiac.2016.05.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 05/02/2016] [Accepted: 05/02/2016] [Indexed: 11/16/2022]
Abstract
BACKGROUND The spread of antimicrobial-resistant organisms is a global concern. To stem this tide, an antimicrobial stewardship program at hospitals is essential to optimize the prescription of broad spectrum antibiotics. In this study we examined the impact of computerized pre-authorization for broad spectrum antibiotics for Pseudomonas aeruginosa at a children's hospital. METHODS An antimicrobial stewardship program at Tokyo Metropolitan Children's Medical Center was assessed between March 2010 and March 2015. A paper-based post-prescription audit was switched to computerized pre-authorization for broad antipseudomonal agents in October 2011. The prescriber was required to obtain approval from physicians in the pediatric infectious diseases division before prescribing restricted antimicrobial agents. Approved prescriptions were processed and logged electronically. We evaluated days of therapy per 1000 patient-days, the cost of antibiotics, and the susceptibility of P. aeruginosa to piperacillin, ceftazidime, cefepime, piperacillin/tazobactam, carbapenems, and ciprofloxacin. Also, the average length of admission and infection-related mortality at 30 days were compared pre- and post-intervention. RESULTS Administration of carbapenems, piperacillin/tazobactam, and ceftazidime decreased significantly after the introduction of computerized pre-authorization. Antibiotic costs were reduced by JPY2.86 million (USD 26,000) annually. None of the antipseudomonal agents showed decreased sensitivity. The average length of admission was shorter in post-intervention. Infection-related mortality at 30 days showed no difference between the pre- and post-intervention periods. CONCLUSION An antimicrobial stewardship program using computerized pre-authorization decreased the use and cost of broad spectrum antibiotics without significant difference in infection-related mortality at 30 days, although our study did not improve susceptibilities of P. aeruginosa.
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Affiliation(s)
- Yuho Horikoshi
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Japan.
| | - Hiroshi Higuchi
- Division of Microbiology, Department of Clinical Laboratory, Tokyo Metropolitan Children's Medical Center, Japan
| | - Junichi Suwa
- Department of Pharmacy, Tokyo Metropolitan Children's Medical Center, Japan
| | - Mihoko Isogai
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Japan
| | - Takayo Shoji
- Division of Pediatric Infectious Diseases, Shizuoka Children's Hospital, Japan
| | - Kenta Ito
- Division of Infectious Diseases, Department of Pediatrics, Tokyo Metropolitan Children's Medical Center, Japan
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The Evolving Role of Antimicrobial Stewardship in Management of Multidrug Resistant Infections. Infect Dis Clin North Am 2016; 30:539-551. [DOI: 10.1016/j.idc.2016.02.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Paramythiotou E, Routsi C. Association between infections caused by multidrug-resistant gram-negative bacteria and mortality in critically ill patients. World J Crit Care Med 2016; 5:111-120. [PMID: 27152254 PMCID: PMC4848154 DOI: 10.5492/wjccm.v5.i2.111] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 12/30/2015] [Accepted: 03/09/2016] [Indexed: 02/06/2023] Open
Abstract
The incidence of gram-negative multidrug-resistant (MDR) bacterial pathogens is increasing in hospitals and particularly in the intensive care unit (ICU) setting. The clinical consequences of infections caused by MDR pathogens remain controversial. The purpose of this review is to summarize the available data concerning the impact of these infections on mortality in ICU patients. Twenty-four studies, conducted exclusively in ICU patients, were identified through PubMed search over the years 2000-2015. Bloodstream infection was the only infection examined in eight studies, respiratory infections in four and variable infections in others. Comparative data on the appropriateness of empirical antibiotic treatment were provided by only seven studies. In ten studies the presence of antimicrobial resistance was not associated with increased mortality; on the contrary, in other studies a significant impact of antibiotic resistance on mortality was found, though, sometimes, mediated by inappropriate antimicrobial treatment. Therefore, a direct association between infections due to gram-negative MDR bacteria and mortality in ICU patients cannot be confirmed. Sample size, presence of multiple confounders and other methodological issues may influence the results. These data support the need for further studies to elucidate the real impact of infections caused by resistant bacteria in ICU patients.
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Smani Y, Pachón-Ibáñez ME, Pachón J. New molecules and adjuvants in the treatment of infections by Acinetobacter baumannii. Expert Opin Pharmacother 2016; 17:1207-14. [PMID: 27067283 DOI: 10.1080/14656566.2016.1176144] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
INTRODUCTION The current problems of the treatment of infections by Acinetobacter baumannii are linked with the increase of multidrug- and extensive-drug resistance and the lack of development of new antimicrobial drugs for Gram-negative bacilli. For these reasons, new alternatives for the treatment and control of severe infections by A. baumannii are necessary. Several studies have reported the effect of adjuvants to restore the efficacy of existing antimicrobial agents. AREAS COVERED In the present review, the authors describe the main results in the development of adjuvant drugs as well as new data on antimicrobial peptides, in monotherapy or in combination therapy with existing antimicrobial agents, which have shown promising preclinical results in vitro and in vivo. EXPERT OPINION The preclinical evaluation of adjuvants and antimicrobial peptides, in monotherapy or in combination therapy, for A. baumannii infections has shown promising results. However, caution is needed and further extensive in vivo studies and clinical trials have to be performed to confirm the potential use of these adjuvants as true therapeutic alternatives.
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Affiliation(s)
- Younes Smani
- a Clinical Unit of Infectious Diseases, Microbiology, and Preventive Medicine , Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/CSIC/University of Seville , Seville , Spain
| | - María Eugenia Pachón-Ibáñez
- a Clinical Unit of Infectious Diseases, Microbiology, and Preventive Medicine , Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/CSIC/University of Seville , Seville , Spain
| | - Jerónimo Pachón
- a Clinical Unit of Infectious Diseases, Microbiology, and Preventive Medicine , Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/CSIC/University of Seville , Seville , Spain
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Alves M, Lemire A, Decré D, Margetis D, Bigé N, Pichereau C, Ait-Oufella H, Baudel JL, Offenstadt G, Guidet B, Barbut F, Maury E. Extended-spectrum beta-lactamase--producing enterobacteriaceae in the intensive care unit: acquisition does not mean cross-transmission. BMC Infect Dis 2016; 16:147. [PMID: 27075040 PMCID: PMC4831109 DOI: 10.1186/s12879-016-1489-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 03/23/2016] [Indexed: 11/23/2022] Open
Abstract
Background In intensive care unit (ICU), infection and colonization by resistant Gram-negative bacteria increase costs, length of stay and mortality. Extended-spectrum beta-lactamase − producing Enterobacteriaceae (ESBL-E) is a group of pathogens increasingly encountered in ICU setting. Conditions that promote ESBL-E acquisition are not completely understood. The increasing incidence of infections related to ESBL-E and the unsolved issues related to ESBL-E cross-transmission, prompted us to assess the rates of referred and acquired cases of ESBL-E in ICU and to assess patient-to-patient cross-transmission of ESBL-E using a multimodal microbiological analysis. Methods During a 5-month period, all patients admitted to a medical ICU were tested for ESBL-E carriage. A rectal swab was performed at admission and then twice a week until discharge or death. ESBL-E strains were analyzed according to antibiotic susceptibility pattern, rep-PCR (repetitive-element Polymerase chain reaction) chromosomal analysis, and plasmid PCR (Polymerase chain reaction) analysis of ESBL genes. Patient-to-patient transmission was deemed likely when 2 identical strains were found in 2 patients hospitalized simultaneously in the ICU. Results Among the 309 patients assessed for ESBL-E carriage on admission, 25 were found to carry ESBL-E (importation rate: 8 %). During follow-up, acquisition was observed among 19 of them (acquisition rate: 6.5 %). Using the multimodal microbiological approach, we found only one case of likely patient-to-patient ESBL-E transmission. Conclusions In unselected ICU patients, we found rather low rates of ESBL-E referred and acquired cases. Only 5 % of acquisitions appeared to be related to patient-to-patient transmission. These data highlight the importance of jointly analyzing phenotypic profile and molecular data to discriminate strains of ESBL-E. Electronic supplementary material The online version of this article (doi:10.1186/s12879-016-1489-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Mikael Alves
- Service de Réanimation Médicale, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, 184 rue du Faubourg Saint-Antoine, 75012, Paris, France
| | - Astrid Lemire
- Service de Microbiologie, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, 184 rue du Faubourg Saint-Antoine, 75012, Paris, France
| | - Dominique Decré
- Service de Microbiologie, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, 184 rue du Faubourg Saint-Antoine, 75012, Paris, France
| | - Dimitri Margetis
- Service de Réanimation Médicale, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, 184 rue du Faubourg Saint-Antoine, 75012, Paris, France
| | - Naïke Bigé
- Service de Réanimation Médicale, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, 184 rue du Faubourg Saint-Antoine, 75012, Paris, France
| | - Claire Pichereau
- Service de Réanimation Médicale, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, 184 rue du Faubourg Saint-Antoine, 75012, Paris, France.,Université Pierre et Marie Curie-Paris 6, Paris, France
| | - Hafid Ait-Oufella
- Service de Réanimation Médicale, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, 184 rue du Faubourg Saint-Antoine, 75012, Paris, France.,Université Pierre et Marie Curie-Paris 6, Paris, France
| | - Jean-Luc Baudel
- Service de Réanimation Médicale, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, 184 rue du Faubourg Saint-Antoine, 75012, Paris, France
| | - Georges Offenstadt
- Service de Réanimation Médicale, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, 184 rue du Faubourg Saint-Antoine, 75012, Paris, France.,Université Pierre et Marie Curie-Paris 6, Paris, France.,Inserm-UPMC UMR S 1136, Paris, France
| | - Bertrand Guidet
- Service de Réanimation Médicale, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, 184 rue du Faubourg Saint-Antoine, 75012, Paris, France.,Université Pierre et Marie Curie-Paris 6, Paris, France.,Inserm-UPMC UMR S 1136, Paris, France
| | - Frédéric Barbut
- Service de Microbiologie, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, 184 rue du Faubourg Saint-Antoine, 75012, Paris, France
| | - Eric Maury
- Service de Réanimation Médicale, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, 184 rue du Faubourg Saint-Antoine, 75012, Paris, France. .,Université Pierre et Marie Curie-Paris 6, Paris, France. .,Inserm-UPMC UMR S 1136, Paris, France.
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Riu M, Chiarello P, Terradas R, Sala M, Garcia-Alzorriz E, Castells X, Grau S, Cots F. Cost Attributable to Nosocomial Bacteremia. Analysis According to Microorganism and Antimicrobial Sensitivity in a University Hospital in Barcelona. PLoS One 2016; 11:e0153076. [PMID: 27055117 PMCID: PMC4824502 DOI: 10.1371/journal.pone.0153076] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 03/23/2016] [Indexed: 11/25/2022] Open
Abstract
AIM To calculate the incremental cost of nosocomial bacteremia caused by the most common organisms, classified by their antimicrobial susceptibility. METHODS We selected patients who developed nosocomial bacteremia caused by Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, or Pseudomonas aeruginosa. These microorganisms were analyzed because of their high prevalence and they frequently present multidrug resistance. A control group consisted of patients classified within the same all-patient refined-diagnosis related group without bacteremia. Our hospital has an established cost accounting system (full-costing) that uses activity-based criteria to analyze cost distribution. A logistic regression model was fitted to estimate the probability of developing bacteremia for each admission (propensity score) and was used for propensity score matching adjustment. Subsequently, the propensity score was included in an econometric model to adjust the incremental cost of patients who developed bacteremia, as well as differences in this cost, depending on whether the microorganism was multidrug-resistant or multidrug-sensitive. RESULTS A total of 571 admissions with bacteremia matched the inclusion criteria and 82,022 were included in the control group. The mean cost was € 25,891 for admissions with bacteremia and € 6,750 for those without bacteremia. The mean incremental cost was estimated at € 15,151 (CI, € 11,570 to € 18,733). Multidrug-resistant P. aeruginosa bacteremia had the highest mean incremental cost, € 44,709 (CI, € 34,559 to € 54,859). Antimicrobial-susceptible E. coli nosocomial bacteremia had the lowest mean incremental cost, € 10,481 (CI, € 8,752 to € 12,210). Despite their lower cost, episodes of antimicrobial-susceptible E. coli nosocomial bacteremia had a major impact due to their high frequency. CONCLUSIONS Adjustment of hospital cost according to the organism causing bacteremia and antibiotic sensitivity could improve prevention strategies and allow their prioritization according to their overall impact and costs. Infection reduction is a strategy to reduce resistance.
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Affiliation(s)
- Marta Riu
- IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
- Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | - Pietro Chiarello
- IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
- Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | - Roser Terradas
- Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
- School of Nursing, Hospital del Mar, Barcelona, Spain
| | - Maria Sala
- IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
- Department of Epidemiology and Evaluation, Hospital del Mar, Barcelona, Spain
- Redissec (Red de Investigación en Servicios Sanitarios en enfermedades crónicas), Madrid, Spain
| | | | - Xavier Castells
- IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
- Department of Epidemiology and Evaluation, Hospital del Mar, Barcelona, Spain
- Redissec (Red de Investigación en Servicios Sanitarios en enfermedades crónicas), Madrid, Spain
| | - Santiago Grau
- Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
- Department of Pharmacy, Hospital del Mar, Barcelona, Spain
| | - Francesc Cots
- IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
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Wu G, Zhang C, Wang J, Zhang F, Wang R, Shen J, Wang L, Pang X, Zhang X, Zhao L, Zhang M. Diminution of the gut resistome after a gut microbiota-targeted dietary intervention in obese children. Sci Rep 2016; 6:24030. [PMID: 27044409 PMCID: PMC4820771 DOI: 10.1038/srep24030] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 03/18/2016] [Indexed: 12/30/2022] Open
Abstract
The gut microbiome represents an important reservoir of antibiotic resistance genes (ARGs). Effective methods are urgently needed for managing the gut resistome to fight against the antibiotic resistance threat. In this study, we show that a gut microbiota-targeted dietary intervention, which shifts the dominant fermentation of gut bacteria from protein to carbohydrate, significantly diminished the gut resistome and alleviated metabolic syndrome in obese children. Of the non-redundant metagenomic gene catalog of ~2 × 106 microbial genes, 399 ARGs were identified in 131 gene types and conferred resistance to 47 antibiotics. Both the richness and diversity of the gut resistome were significantly reduced after the intervention. A total of 201 of the 399 ARGs were carried in 120 co-abundance gene groups (CAGs) directly binned from the gene catalog across both pre-and post-intervention samples. The intervention significantly reduced several CAGs in Klebsiella, Enterobacter and Escherichia, which were the major hubs for multiple resistance gene types. Thus, dietary intervention may become a potentially effective method for diminishing the gut resistome.
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Affiliation(s)
- Guojun Wu
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic &Developmental Sciences, and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Chenhong Zhang
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic &Developmental Sciences, and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Jing Wang
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic &Developmental Sciences, and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Feng Zhang
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic &Developmental Sciences, and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Ruirui Wang
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic &Developmental Sciences, and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Jian Shen
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic &Developmental Sciences, and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Linghua Wang
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic &Developmental Sciences, and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Xiaoyan Pang
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic &Developmental Sciences, and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Xiaojun Zhang
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic &Developmental Sciences, and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Liping Zhao
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic &Developmental Sciences, and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Menghui Zhang
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic &Developmental Sciences, and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
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47
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Onken A, Said AK, Jørstad M, Jenum PA, Blomberg B. Prevalence and Antimicrobial Resistance of Microbes Causing Bloodstream Infections in Unguja, Zanzibar. PLoS One 2015; 10:e0145632. [PMID: 26700032 PMCID: PMC4689456 DOI: 10.1371/journal.pone.0145632] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 12/07/2015] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Bloodstream infections (BSI) are frequent and cause high case-fatality rates. Urgent antibiotic treatment can save patients' lives, but antibiotic resistance can render antibiotic therapy futile. This study is the first to collect epidemiological data on BSI from Unguja, Zanzibar. METHODS Clinical data and blood for culturing and susceptibility testing of isolated microbes were obtained from 469 consecutively enrolled neonates, children and adults presenting with signs of systemic infections at Mnazi Mmoja Hospital (MMH), Zanzibar. RESULTS Pathogenic bacteria were recovered from the blood of 14% of the patients (66/469). The most frequently isolated microbes were Klebsiella pneumoniae, Escherichia coli, Acinetobacter spp. and Staphylococcus aureus. Infections were community-acquired in 56 patients (85%) and hospital-acquired in 8 (12%) (data missing for 2 patients). BSI caused by extended-spectrum beta-lactamase (ESBL) producing Enterobacteriaceae (E. coli, K. pneumoniae) was found in 5 cases, of which 3 were community-acquired and 2 hospital-acquired. Three of these patients died. Six of 7 Salmonella Typhi isolates were multidrug resistant. Streptococcus pneumoniae was found in one patient only. CONCLUSIONS This is the first report of ESBL-producing bacteria causing BSI from the Zanzibar archipelago. Our finding of community-acquired BSI caused by ESBL-producing bacteria is alarming, as it implies that these difficult-to-treat bacteria have already spread in the society. In the local setting these infections are virtually impossible to cure. The findings call for increased awareness of rational antibiotic use, infection control and surveillance to counteract the problem of emerging antimicrobial resistance.
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Affiliation(s)
- Annette Onken
- Department of Medical Microbiology, Vestre Viken Health Trust, Drammen, Norway
- * E-mail:
| | | | - Melissa Jørstad
- Department of Medicine, Haukeland University Hospital, Bergen, Norway
| | - Pål A. Jenum
- Department of Medical Microbiology, Vestre Viken Health Trust, Drammen, Norway
| | - Bjørn Blomberg
- Department of Medicine, Haukeland University Hospital, Bergen, Norway
- National Center for Tropical Infectious Diseases, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Sciences, University of Bergen, Bergen, Norway
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48
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Pachón-Ibáñez ME, Smani Y, Pachón J. Use of adjuvants in the treatment of Acinetobacter baumannii. Expert Rev Anti Infect Ther 2015; 14:153-5. [PMID: 26620637 DOI: 10.1586/14787210.2016.1126508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The current antibiotic crisis to treat infections by Acinetobacter baumannii is linked with the increase of antimicrobial resistance and the lack of development of new antimicrobial drugs. For this reason, new alternatives for the treatment and control of infections by A. baumannii are necessary. Several studies have reported the effect of adjuvants to restore the efficacy of existing antimicrobial agents. Herein, we analyzed the main results on the development of adjuvant drugs, as monotherapy or in combination therapy with existing antimicrobial agents, which have shown promising results in vitro and in vivo. However, caution is needed and further extensive in vivo studies have to be performed to confirm the potential use of these adjuvants as true therapeutic alternatives.
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Affiliation(s)
- María Eugenia Pachón-Ibáñez
- a Clinical Unit of Infectious Diseases, microbiology, and Preventive Medicine , Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/CSIC/University of Seville , Seville , Spain
| | - Younes Smani
- a Clinical Unit of Infectious Diseases, microbiology, and Preventive Medicine , Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/CSIC/University of Seville , Seville , Spain
| | - Jerónimo Pachón
- a Clinical Unit of Infectious Diseases, microbiology, and Preventive Medicine , Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/CSIC/University of Seville , Seville , Spain
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Maslikowska JA, Walker SAN, Elligsen M, Mittmann N, Palmay L, Daneman N, Simor A. Impact of infection with extended-spectrum β-lactamase-producing Escherichia coli or Klebsiella species on outcome and hospitalization costs. J Hosp Infect 2015; 92:33-41. [PMID: 26597637 DOI: 10.1016/j.jhin.2015.10.001] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 10/05/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND Extended-spectrum β-lactamase (ESBL)-producing bacteria are important sources of infection; however, Canadian data evaluating the impact of ESBL-associated infection are lacking. AIM To determine whether patients infected with ESBL-producing Escherichia coli or Klebsiella species (ESBL-EcKs) exhibit differences in clinical outcome, microbiological outcome, mortality, and/or hospital resource use compared to patients infected with non-ESBL-producing strains. METHODS A retrospective case-control study of 75 case patients with ESBL-EcKs matched to controls infected with non-ESBL-EcKs who were hospitalized from June 2010 to April 2013 was conducted. Patient-level cost data were provided by the institution's business office. Clinical data were collected using the electronic databases and paper charts. FINDINGS Median infection-related hospitalization costs per patient were greater for cases than controls (C$10,507 vs C$7,882; median difference: C$3,416; P = 0.04). The primary driver of increased costs was prolonged infection-related hospital length of stay (8 vs 6 days; P = 0.02) with patient location (ward, ICU) and indirect care costs (including costs associated with infection prevention and control) as the leading cost categories. Cases were more likely to experience clinical failure (25% vs 11%; P = 0.03), with a higher all-cause mortality (17% vs 5%; P = 0.04). Less than half of case patients were prescribed appropriate empiric antimicrobial therapy, whereas controls received adequate initial treatment in nearly all circumstances (48% vs 96%; P < 0.01). CONCLUSION Patients with infection caused by ESBL-EcKs are at increased risk for clinical failure and mortality, with additional cost to the Canadian healthcare system of C$3,416 per patient.
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Affiliation(s)
- J A Maslikowska
- Department of Pharmacy, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - S A N Walker
- Department of Pharmacy, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada; Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Division of Infectious Diseases, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada.
| | - M Elligsen
- Department of Pharmacy, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - N Mittmann
- HOPE Research Centre, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Department of Pharmacology, University of Toronto, Toronto, Ontario, Canada
| | - L Palmay
- Department of Pharmacy, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - N Daneman
- Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Division of Infectious Diseases, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - A Simor
- Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Division of Infectious Diseases, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
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50
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Zykov IN, Sundsfjord A, Småbrekke L, Samuelsen Ø. The antimicrobial activity of mecillinam, nitrofurantoin, temocillin and fosfomycin and comparative analysis of resistance patterns in a nationwide collection of ESBL-producing Escherichia coli in Norway 2010-2011. Infect Dis (Lond) 2015; 48:99-107. [PMID: 26414659 DOI: 10.3109/23744235.2015.1087648] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND The prevalence of extended-spectrum β-lactamase (ESBL)-producing Escherichia coli in Norway has been steadily increasing during the last 10-15 years as part of a global pandemic. ESBL producers frequently express co-resistance to other important antimicrobial drug classes, limiting therapeutic options. This has led to regained interest in older antimicrobial agents. The aim of this study was to evaluate the antimicrobial activity of mecillinam, nitrofurantoin, temocillin and fosfomycin, as well as to perform a comparative analysis of resistance patterns in a nationwide collection of ESBL-producing E. coli. METHODS A nationwide collection of all 105 clinical isolates of ESBL-producing E. coli from the Norwegian Organisation for Surveillance of Antimicrobial Resistance (NORM) during 2010-2011 was analyzed. Detection and identification of ESBL-encoding genes were performed by PCR and sequencing for confirmation of ESBL variants of blaTEM and blaSHV (2010) or microarray (2011). Minimum inhibitory concentrations (MICs) or MIC correlates were determined using MIC gradient tests or VITEK 2, respectively. Comparative analysis of resistance patterns was performed. RESULTS All isolates were susceptible to fosfomycin, temocillin (urinary tract breakpoint) and meropenem. For mecillinam and nitrofurantoin, 6% and 9% of the isolates, respectively, were non-susceptible. A high level of susceptibility was also observed for amikacin (95%). In contrast, the non-susceptibility proportions to ampicillin (100%), cefotaxime (97%), ceftazidime (77%), aztreonam (87%), gentamicin (42%), tobramycin (52%), ciprofloxacin (76%) and trimethoprim-sulfamethoxazole (71%) were higher. CONCLUSIONS Overall, the in vitro susceptibility to nitrofurantoin, fosfomycin, mecillinam and temocillin was high, indicating that these drugs are good options for treating uncomplicated urinary tract infections caused by ESBL-producing E. coli.
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Affiliation(s)
- Ilya Nikolaevich Zykov
- a Norwegian National Advisory Unit on Detection of Antimicrobial Resistance, Department of Microbiology and Infection Control , University Hospital of North Norway , Tromsø , Norway.,b Research Group for Host-Microbe Interactions, Department of Medical Microbiology, Faculty of Health Sciences , University of Tromsø - Arctic University of Norway , Tromsø , Norway
| | - Arnfinn Sundsfjord
- a Norwegian National Advisory Unit on Detection of Antimicrobial Resistance, Department of Microbiology and Infection Control , University Hospital of North Norway , Tromsø , Norway.,b Research Group for Host-Microbe Interactions, Department of Medical Microbiology, Faculty of Health Sciences , University of Tromsø - Arctic University of Norway , Tromsø , Norway
| | - Lars Småbrekke
- c Department of Pharmacy, Faculty of Health Sciences , University of Tromsø - Arctic University of Norway , Tromsø , Norway
| | - Ørjan Samuelsen
- a Norwegian National Advisory Unit on Detection of Antimicrobial Resistance, Department of Microbiology and Infection Control , University Hospital of North Norway , Tromsø , Norway.,c Department of Pharmacy, Faculty of Health Sciences , University of Tromsø - Arctic University of Norway , Tromsø , Norway
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