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Gouda AM, Sileem AE, Elnahas HM, Tawfik AE, Eid RA, Shati AA, Al-Qahtani SM, Dawood SA, Alshehri MA, Eissa M, Soltan MA, Noreldin AE, Elwishahy AH, Negm EM. Exploring Ventilator-Associated Pneumonia: Microbial Clues and Biomarker Insights from a Retrospective Study. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:1346. [PMID: 39202627 PMCID: PMC11356324 DOI: 10.3390/medicina60081346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2024] [Revised: 08/01/2024] [Accepted: 08/13/2024] [Indexed: 09/03/2024]
Abstract
Background and Objectives: Ventilator-associated pneumonia (VAP) is a common complication in critically ill patients receiving mechanical ventilation. The incidence rates of VAP vary, and it poses significant challenges due to microbial resistance and the potential for adverse outcomes. This study aims to explore the microbial profile of VAP and evaluate the utility of biomarkers and illness severity scores in predicting survival. Materials and Methods: A retrospective cohort study was conducted involving 130 patients diagnosed with VAP. Microbial analysis of bronchoalveolar lavage (BAL) fluid, as well as measurements of C-reactive protein (CRP) and procalcitonin (PCT) levels, were performed. Sequential Organ Failure Assessment (SOFA) and Acute Physiology and Chronic Health Evaluation II (APACHE II) scores were calculated to assess illness severity. Statistical analyses were conducted to determine correlations and associations. Results: The study revealed that Klebsiella pneumoniae (K. pneumoniae) (50.7%) and Pseudomonas aeruginosa (P. aeruginosa) (27.69%) were the most identified microorganisms in VAP cases. SOFA (p-value < 0.0001) and APACHE II (p-value < 0.0001) scores were effective in assessing the severity of illness and predicting mortality in VAP patients. Additionally, our investigation highlighted the prognostic potential of CRP levels (odds ratio [OR]: 0.980, 95% confidence interval [CI] 0.968 to 0.992, p = 0.001). Elevated levels of CRP were associated with reduced survival probabilities in VAP patients. Conclusion: This study highlights the microbial profile of VAP and the importance of biomarkers and illness severity scores in predicting survival. Conclusions: The findings emphasize the need for appropriate management strategies to combat microbial resistance and improve outcomes in VAP patients.
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Affiliation(s)
- Ahmed M. Gouda
- Department of Pharmacy Practice, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Ashraf E. Sileem
- Department of Chest Diseases, Faculty of Medicine, Zagazig University, Zagazig 44519, Egypt
| | - Hanan M. Elnahas
- Department of Pharmaceutical and Industrial Pharmacy, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | | | - Refaat A. Eid
- Pathology Department, College of Medicine, King Khalid University, Abha 62529, Saudi Arabia
| | - Ayed A. Shati
- Department of Child Health, College of Medicine, King Khalid University, Abha 62529, Saudi Arabia
| | - Saleh M. Al-Qahtani
- Department of Child Health, College of Medicine, King Khalid University, Abha 62529, Saudi Arabia
| | - Samy A. Dawood
- Department of Child Health, College of Medicine, King Khalid University, Abha 62529, Saudi Arabia
| | - Mohammed A. Alshehri
- Department of Child Health, College of Medicine, King Khalid University, Abha 62529, Saudi Arabia
| | - Mohamed Eissa
- Pathology Department, College of Medicine, King Khalid University, Abha 62529, Saudi Arabia
- Clinical Pathology Department, Faculty of Medicine, Zagazig University, Zagazig 44519, Egypt
| | - Mohamed A. Soltan
- Department of Microbiology and Immunology, Faculty of Pharmacy, Sinai University, Ismailia 41611, Egypt
| | - Ahmed E. Noreldin
- Department of Histology and Cytology, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, Egypt
| | - Amir Helmy Elwishahy
- General and Onco Surgery Department, Dhahran Aljanoub General Hospital, Aseer 7363, Saudi Arabia
| | - Essamedin M. Negm
- Department of Anaesthesia, ICU and Pain Management, Faculty of Medicine, Zagazig University, Zagazig 44519, Egypt
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2
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Sungurlu S, Balk RA. The Role of Biomarkers in the Diagnosis and Management of Pneumonia. Infect Dis Clin North Am 2024; 38:35-49. [PMID: 38280766 DOI: 10.1016/j.idc.2023.12.005] [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] [Indexed: 01/29/2024]
Abstract
Biomarkers are used in the diagnosis, severity determination, and prognosis for patients with community-acquired pneumonia (CAP). Selected biomarkers may indicate a bacterial infection and need for antibiotic therapy (C-reactive protein, procalcitonin, soluble triggering receptor expressed on myeloid cells). Biomarkers can differentiate CAP patients who require hospital admission and severe CAP requiring intensive care unit admission. Biomarker-guided antibiotic therapy may limit antibiotic exposure without compromising outcome and thus improve antibiotic stewardship. The authors discuss the role of biomarkers in diagnosing, determining severity, defining the prognosis, and limiting antibiotic exposure in CAP and ventilator-associated pneumonia patients.
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Affiliation(s)
- Sarah Sungurlu
- Division of Pulmonary, Critical Care, and Sleep Medicine, Rush University Medical Center, Rush Medical College, 1725 West Harrison Street Suite 054, Chicago, IL 60612, USA
| | - Robert A Balk
- Division of Pulmonary, Critical Care, and Sleep Medicine, Rush University Medical Center, Rush Medical College, 1725 West Harrison Street Suite 054, Chicago, IL 60612, USA.
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3
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Kajeekul R, Thamlikitkul V, Wonglaksanapimon S, Rattanaumpawan P. Epidemiology of ventilator-associated tracheobronchitis and ventilator-associated pneumonia caused by multidrug-resistant Gram-negative bacteria at a tertiary care hospital in Thailand. JAC Antimicrob Resist 2024; 6:dlad140. [PMID: 38161966 PMCID: PMC10753648 DOI: 10.1093/jacamr/dlad140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 12/05/2023] [Indexed: 01/03/2024] Open
Abstract
Objectives To investigate the epidemiology of MDR Gram-negative bacilli ventilator-associated tracheobronchitis (MDR GNB-VAT) and MDR GNB ventilator-associated pneumonia (MDR GNB-VAP) among mechanically ventilated patients. Methods We conducted a retrospective observational study among hospitalized patients who underwent continuous mechanical ventilation for ≥48 h at Siriraj Hospital, Thailand. Results During the 18 month study period, 1824 unique patients underwent continuous mechanical ventilation (12 216 ventilator-days). The cumulative incidences of MDR GNB-VAT and -VAP were 8.4% and 8.3%, respectively. The incidence rates of MDR GNB-VAT and -VAP were 12.52 and 12.44 episodes/1000 ventilator-days, respectively. Among those with VAT, the cumulative incidence and incidence rate of subsequent VAP development within 7 days were 11.76% and 2.81 episodes/1000 ventilator-days, respectively. The median durations of mechanical ventilation before having VAP and VAT were 9 and 12 days, respectively. Multivariate analysis identified three independently associated factors for patients having VAP compared with having VAT: underlying cerebrovascular disease [adjusted OR (aOR): 0.46; 95% CI: 0.27-0.78; P = 0.04], previous surgery (aOR: 0.68; 95% CI: 0.57-0.8; P < 0.001) and acute renal failure (aOR: 1.75; 95% CI: 1.27-2.40; P = 0.001). Conclusions The study revealed high incidences of MDR GNB-VAT and -VAP among mechanically ventilated patients. The independent risk factors for having VAP can help identify patients at risk for developing VAP and who need early weaning from mechanical ventilation.
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Affiliation(s)
- Rattagarn Kajeekul
- Division of Infectious Diseases and Tropical Medicine, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Visanu Thamlikitkul
- Division of Infectious Diseases and Tropical Medicine, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Suvimon Wonglaksanapimon
- Department of Radiology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Pinyo Rattanaumpawan
- Division of Infectious Diseases and Tropical Medicine, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
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4
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Myrianthefs P, Zakynthinos GE, Tsolaki V, Makris D. Aerosolized Antibiotics to Manage Ventilator-Associated Infections: A Comprehensive Review. Antibiotics (Basel) 2023; 12:antibiotics12050801. [PMID: 37237704 DOI: 10.3390/antibiotics12050801] [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: 04/03/2023] [Revised: 04/18/2023] [Accepted: 04/20/2023] [Indexed: 05/28/2023] Open
Abstract
BACKGROUND Ventilator-associated lower respiratory tract infectious complications in critically ill patients cover a wide spectrum of one disease process (respiratory infection), initiating from tracheal tube and/or tracheobronchial colonization, to ventilator associated tracheobronchitis (VAT) and ventilator-associated pneumonia (VAP). VAP occurence has been associated with increased intensive care unit (ICU) morbidity (ventilator days, as well as length of ICU and hospital stay) and ICU mortality. Therefore, treatments that aim at VAP/VAT incidence reduction are a high priority. AIM The aim of the present review is to discuss the current literature concerning two major aspects: (a) can aerosolized antibiotics (AA) administered in a pre-emptive way prevent the occurrence of ventilator-associated infections? and (b) can VAT treatment with aerosolized avert the potential evolution to VAP? RESULTS There were identified eight studies that provided data on the use of aerosolized antibiotics for the prevention of VAT/VAP. Most of them report favorable data on reducing the colonisation rate and the progression to VAP/VAT. Another four studies dealt with the treatment of VAT/VAP. The results support the decrease in the incidence to VAP transition and/or the improvement in signs and symptoms of VAP. Moreover, there are concise reports on higher cure rates and microbiological eradication in patients treated with aerosolized antibiotics. Yet, differences in the delivery modality adopted and resistance emergence issues preclude the generalisability of the results. CONCLUSION Aerosolized antibiotic therapy can be used to manage ventilator-associated infections, especially those with difficult to treat resistance. The limited clinical data raise the need for large randomized controlled trials to confirm the benefits of AA and to evaluate the impact on antibiotic selection pressure.
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Affiliation(s)
- Pavlos Myrianthefs
- "Agioi Anargyroi" General Hospital, School of Health Sciences, Department of Nursing, National and Kapodistrian University of Athens, 14564 Athens, Greece
| | - George E Zakynthinos
- Third Cardiology Clinic, University of Athens, Sotiria Hospital, 11526 Athens, Greece
| | - Vasiliki Tsolaki
- Department of Intensive Care Medicine, University Hospital of Larissa, 41110 Larissa, Greece
| | - Demosthenes Makris
- Department of Intensive Care Medicine, University Hospital of Larissa, 41110 Larissa, Greece
- Faculty of Medicine, University of Thessaly, 41110 Larissa, Greece
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5
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Mainas G, Nibali L, Ide M, Mahmeed WA, Al-Rasadi K, Al-Alawi K, Banach M, Banerjee Y, Ceriello A, Cesur M, Cosentino F, Firenze A, Galia M, Goh SY, Janež A, Kalra S, Kapoor N, Kempler P, Lessan N, Lotufo P, Papanas N, Rizvi AA, Sahebkar A, Santos RD, Stoian AP, Toth PP, Viswanathan V, Rizzo M. Associations between Periodontitis, COVID-19, and Cardiometabolic Complications: Molecular Mechanisms and Clinical Evidence. Metabolites 2022; 13:40. [PMID: 36676965 PMCID: PMC9865290 DOI: 10.3390/metabo13010040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/11/2022] [Accepted: 12/15/2022] [Indexed: 12/29/2022] Open
Abstract
Periodontitis is a microbially driven, host-mediated disease that leads to loss of periodontal attachment and resorption of bone. It is associated with the elevation of systemic inflammatory markers and with the presence of systemic comorbidities. Coronavirus disease 2019 (COVID-19) is a contagious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Although the majority of patients have mild symptoms, others experience important complications that can lead to death. After the spread of the COVID-19 pandemic, several investigations demonstrating the possible relationship between periodontitis and COVID-19 have been reported. In addition, both periodontal disease and COVID-19 seem to provoke and/or impair several cardiometabolic complications such as cardiovascular disease, type 2 diabetes, metabolic syndrome, dyslipidemia, insulin resistance, obesity, non-alcoholic fatty liver disease, and neurological and neuropsychiatric complications. Therefore, due to the increasing number of investigations focusing on the periodontitis-COVID-19 relationship and considering the severe complications that such an association might cause, this review aims to summarize all existing emerging evidence regarding the link between the periodontitis-COVID-19 axis and consequent cardiometabolic impairments.
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Affiliation(s)
- Giuseppe Mainas
- Periodontology Unit, Centre for Host-Microbiome Interactions, Dental Institute, King’s College London, London SE1 9RT, UK
| | - Luigi Nibali
- Periodontology Unit, Centre for Host-Microbiome Interactions, Dental Institute, King’s College London, London SE1 9RT, UK
| | - Mark Ide
- Periodontology Unit, Centre for Host-Microbiome Interactions, Dental Institute, King’s College London, London SE1 9RT, UK
| | - Wael Al Mahmeed
- Heart and Vascular Institute, Cleveland Clinic, Abu Dhabi P.O. Box 112412, United Arab Emirates
| | - Khalid Al-Rasadi
- Medical Research Center, Sultan Qaboos University, Muscat 113, Oman
| | - Kamila Al-Alawi
- Department of Training and Studies, Royal Hospital, Ministry of Health, Muscat 113, Oman
| | - Maciej Banach
- Department of Preventive Cardiology and Lipidology, Medical University of Lodz (MUL), 90419 Lodz, Poland
- Polish Mother’s Memorial Hospital Research Institute (PMMHRI), 93338 Lodz, Poland
- Cardiovascular Research Centre, University of Zielona Gora, 65417 Zielona Gora, Poland
| | - Yajnavalka Banerjee
- Department of Biochemistry, Mohamed Bin Rashid University, Dubai 505055, United Arab Emirates
| | | | - Mustafa Cesur
- Clinic of Endocrinology, Ankara Güven Hospital, 06540 Ankara, Turkey
| | - Francesco Cosentino
- Unit of Cardiology, Karolinska Institute and Karolinska University Hospital, University of Stockholm, 17177 Stockholm, Sweden
| | - Alberto Firenze
- Unit of Research and International Cooperation, University Hospital of Palermo, 90133 Palermo, Italy
| | - Massimo Galia
- Department of Biomedicine, Neurosciences and Advanced Diagnostics (Bind), University of Palermo, 90133 Palermo, Italy
| | - Su-Yen Goh
- Department of Endocrinology, Singapore General Hospital, Singapore 169856, Singapore
| | - Andrej Janež
- Department of Endocrinology, Diabetes and Metabolic Diseases, University Medical Center Ljubljana, 1000 Ljubljana, Slovenia
| | - Sanjay Kalra
- Department of Endocrinology, Bharti Hospital & BRIDE, Karnal 132001, India
| | - Nitin Kapoor
- Department of Endocrinology, Diabetes and Metabolism, Christian Medical College, Vellore 632004, India
- Baker Heart and Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Peter Kempler
- Department of Medicine and Oncology, Semmelweis University, 1085 Budapest, Hungary
| | - Nader Lessan
- The Research Institute, Imperial College London Diabetes Centre, Abu Dhabi P.O. Box 48338, United Arab Emirates
| | - Paulo Lotufo
- Center for Clinical and Epidemiological Research, University Hospital, University of São Paulo, São Paulo 05508-000, Brazil
| | - Nikolaos Papanas
- Diabetes Center, Second Department of Internal Medicine, Democritus University of Thrace, University Hospital of Alexandroupolis, 68100 Alexandroupolis, Greece
| | - Ali A. Rizvi
- Department of Medicine, University of Central Florida College of Medicine, Orlando, FL 32827, USA
| | - Amirhossein Sahebkar
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad 1313199137, Iran
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad 1313199137, Iran
- Department of Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad 1313199137, Iran
| | - Raul D. Santos
- Heart Institute (InCor) University of Sao Paulo Medical School Hospital, São Paulo 05403-900, Brazil
- Hospital Israelita Albert Einstein, São Paulo 05652-900, Brazil
| | - Anca P. Stoian
- Faculty of Medicine, Diabetes, Nutrition and Metabolic Diseases, Carol Davila University, 050474 Bucharest, Romania
| | - Peter P. Toth
- Cicarrone Center for the Prevention of Cardiovascular Disease, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | | | - Manfredi Rizzo
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties (Promise), University of Palermo, 90133 Palermo, Italy
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Jovanović M, Milosavljević M, Zdravković D, Živić M, Veličković S, Janković S. Septic arthritis of the temporomandibular joint in adults: Systematic review. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2022; 123:465-472. [PMID: 34628098 DOI: 10.1016/j.jormas.2021.09.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 06/19/2021] [Accepted: 09/21/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Septic arthritis of the temporomandibular joint (SATMJ) is acute or chronic bacterial or fungal infection involving temporomandibular joint (TMJ) space. It is a disease with high mortality in whole body joints, and about three-fourths of survivors have residual malfunctioning of the affected joint. OBJECTIVE The aim of this review was to search systematically, evaluate and then summarize scientific literature about etiology, signs and symptoms, diagnosis, treatment and prognosis of the SATMJ in adults. METHODS After registration at PROSPERO this systematic review was conducted and reported according to the PRISMA checklist. The following databases were systematically searched: MEDLINE, EBSCO, The Cochrane Central Register of Controlled Trials (Central), SCIndex, Scopus, Google Scholar and Registry of clinical studies with human participants. RESULTS In total 37 studies with 91 patients were included in the review. Dominant signs and symptoms of SATMJ were pain and trismus, while fever was infrequent. The most frequent isolates from the TMJ were Staphylococcus aureus and Streptococci; however, less than 20% of patients had data about susceptibility of the isolates to antibiotics. Combination of third generation cephalosporin and metronidazole was the most frequently prescribed empirically, and antibiotics especially active against S. aureus (glycopeptides and anti-staphylococcal beta-lactams) were under-prescribed. Administration of antibiotics was prolonged (median over 30 days), although two weeks are sufficient treatment for SATMJ if right choice of antibiotics was made. There was high rate of repeated surgical interventions (53.5%), which were linked to higher risk of long-term functional defects. CONCLUSIONS The SATMJ is serious infection that requires early empiric administration of antibiotics with good coverage of Gram-positive bacteria, and subsequent correction of antibiotic therapy according to susceptibility of isolates. Appropriate antibiotic therapy decreases risk of long-term functional disorders.
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Affiliation(s)
- Milica Jovanović
- University of Kragujevac, Faculty of Medical Sciences, Department of Dentistry, Kragujevac, Serbia
| | - Marko Milosavljević
- University of Kragujevac, Faculty of Medical Sciences, Department of Dentistry, Kragujevac, Serbia.
| | - Dejan Zdravković
- University of Kragujevac, Faculty of Medical Sciences, Department of Dentistry, Kragujevac, Serbia
| | - Miloš Živić
- University of Kragujevac, Faculty of Medical Sciences, Department of Dentistry, Kragujevac, Serbia
| | - Stefan Veličković
- University of Kragujevac, Faculty of Medical Sciences, Department of Dentistry, Kragujevac, Serbia
| | - Slobodan Janković
- University of Kragujevac, Faculty of Medical Sciences, Department of Pharmacy, Kragujevac, Serbia
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7
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Liao R, Chakladar S, Gamalo M. Win ratio approach for analyzing composite time-to-event endpoint with opposite treatment effects in its components. Pharm Stat 2022; 21:1342-1356. [PMID: 35766113 DOI: 10.1002/pst.2248] [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: 02/18/2021] [Revised: 04/09/2022] [Accepted: 05/08/2022] [Indexed: 11/07/2022]
Abstract
There is an increasing interest in the use of win ratio with composite time-to-event due to its flexibility in combining component endpoints. Exploring this flexibility further, one interesting question is in assessing the impact when there is a difference in treatment effect in the component endpoints. For example, the active treatment may prolong the time to occurrence of the negative event such as death or ventilation; meanwhile, the treatment effect may also shorten the time to achieving positive events, such as recovery or improvement. Notably, this portrays a situation where the treatment effect on time to recovery is in a different direction of benefit compared to the time to ventilation or death. Under such circumstances, if a single endpoint is used, the benefit gained for other individual outcomes is not counted and is diminished. As consequence, the study may need a larger sample size to detect a significant effect of treatment. Such a scenario can be handled by win ratio in a novel way by ranking component events, which is different from the usual composite endpoint approach such as time-to-first event. To evaluate how the different directions of treatment effect on component endpoints will impact the win ratio analysis, we use a Clayton copula-based bivariate survival simulation to investigate the correlation of component time-to-event. Through simulation, we found that compared to the marginal model using single endpoints, the win ratio analysis on composite endpoint performs better, especially when the correlation between two events is weak. Then, we applied the methodology to an infectious disease progression simulated study motivated by COVID-19. The application demonstrates that the win ratio approach offers advantages in empirical power compared to the traditional Cox proportional hazard approach when there is a difference in treatment effect in the marginal events.
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Affiliation(s)
- Ran Liao
- Department of Biometrics, Eli Lilly and Company, Indiana, USA
| | | | - Margaret Gamalo
- Globel Patient Product (GPD) Inflammation and Immunology, Pfizer, Pennsylvania, USA
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8
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Sick-Samuels AC, Woods-Hill C. Diagnostic Stewardship in the Pediatric Intensive Care Unit. Infect Dis Clin North Am 2022; 36:203-218. [PMID: 35168711 PMCID: PMC8865365 DOI: 10.1016/j.idc.2021.11.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
In the pediatric intensive care unit (PICU), clinicians encounter complex decision making, balancing the need to treat infections promptly against the potential harms of antibiotics. Diagnostic stewardship is an approach to optimize microbiology diagnostic test practices to reduce unnecessary antibiotic treatment. We review the evidence for diagnostic stewardship of blood, endotracheal, and urine cultures in the PICU. Clinicians should consider 3 questions applying diagnostic stewardship: (1) Does the patient have signs or symptoms of an infectious process? (2) What is the optimal diagnostic test available to evaluate for this infection? (3) How should the diagnostic specimen be collected to optimize results?
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Affiliation(s)
- Anna C. Sick-Samuels
- The Johns Hopkins University School of Medicine, Department of Pediatrics, Division of Infectious Diseases, Baltimore, MD,The Johns Hopkins Hospital, Department of Hospital Epidemiology and Infection Control, Baltimore, MD
| | - Charlotte Woods-Hill
- Division of Critical Care Medicine, The Children’s Hospital of Philadelphia, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA.,The Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA
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9
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Impact of Inflammatory Response Modifiers on the Incidence of Hospital-Acquired Infections in Patients with COVID-19. Infect Dis Ther 2021; 10:1407-1418. [PMID: 34115314 PMCID: PMC8193595 DOI: 10.1007/s40121-021-00477-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 05/28/2021] [Indexed: 12/18/2022] Open
Abstract
Introduction The study aim was to assess the influence of inflammatory response modifiers, including anti-interleukin-6 (IL-6) biologics and corticosteroids, on the incidence of hospital-acquired infections in patients with coronavirus disease 2019 (COVID-19). Methods Case–control study performed at a university hospital from February 26 to May 26, 2020. Cases were defined as patients with COVID-19 who developed hospital-acquired infections. For each case, two controls were selected among patients without infections. Cases and controls were matched obeying three criteria in a hierarchical sequence: length of hospital stay up until the first infection; comorbidity; and need for Intensive care unit (ICU) admission. Conditional logistic regression analysis was used to estimate the association of exposures with being a case. Results A total of 71 cases and 142 controls were included. Independent predictors for acquiring a hospital infection were chronic liver disease [odds ratio (OR) 16.56, 95% CI 1.87–146.5, p = 0.012], morbid obesity (OR 6.11, 95% CI 1.06–35.4, p = 0.043), current or past smoking (OR 4.15, 95% CI 1.45–11.88, p = 0.008), exposure to hydroxychloroquine (OR 0.2, 95% CI 0.041–1, p = 0.053), and invasive mechanical ventilation (OR 61.5, 95% CI 11.08–341, p ≤ 0.0001). Conclusions Inflammatory response modifiers had no influence on acquisition of nosocomial infections in admitted patients with COVID-19. Hospital-acquired infections primarily occurred in the critically ill and invasive mechanical ventilation was the main exposure conferring risk. Supplementary Information The online version contains supplementary material available at 10.1007/s40121-021-00477-9.
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10
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Sick-Samuels AC, Linz M, Bergmann J, Fackler JC, Berenholtz SM, Ralston SL, Hoops K, Dwyer J, Colantuoni E, Milstone AM. Diagnostic Stewardship of Endotracheal Aspirate Cultures in a PICU. Pediatrics 2021; 147:peds.2020-1634. [PMID: 33827937 PMCID: PMC8086005 DOI: 10.1542/peds.2020-1634] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/04/2020] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Clinicians commonly obtain endotracheal aspirate cultures (EACs) in the evaluation of suspected ventilator-associated infections. However, bacterial growth in EACs does not distinguish bacterial colonization from infection and may lead to overtreatment with antibiotics. We describe the development and impact of a clinical decision support algorithm to standardize the use of EACs from ventilated PICU patients. METHODS We monitored EAC use using a statistical process control chart. We compared the rate of EACs using Poisson regression and a quasi-experimental interrupted time series model and assessed clinical outcomes 1 year before and after introduction of the algorithm. RESULTS In the preintervention year, there were 557 EACs over 5092 ventilator days; after introduction of the algorithm, there were 234 EACs over 3654 ventilator days (an incident rate of 10.9 vs 6.5 per 100 ventilator days). There was a 41% decrease in the monthly rate of EACs (incidence rate ratio [IRR]: 0.59; 95% confidence interval [CI] 0.51-0.67; P < .001). The interrupted time series model revealed a preexisting 2% decline in the monthly culture rate (IRR: 0.98; 95% CI 0.97-1.0; P = .01), immediate 44% drop (IRR: 0.56; 95% CI 0.45-0.70; P = .02), and stable rate in the postintervention year (IRR: 1.03; 95% CI 0.99-1.07; P = .09). In-hospital mortality, hospital length of stay, 7-day readmissions, and All Patients Refined Diagnosis Related Group severity and mortality scores were stable. The estimated direct cost savings was $26 000 per year. CONCLUSIONS A clinical decision support algorithm standardizing EAC obtainment from ventilated PICU patients was associated with a sustained decline in the rate of EACs, without changes in mortality, readmissions, or length of stay.
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Affiliation(s)
- Anna C. Sick-Samuels
- Departments of Pediatrics and,Hospital Epidemiology and Infection Control, Johns Hopkins Hospital, Baltimore, Maryland
| | - Matthew Linz
- New Jersey Medical School, Rutgers University, Newark, New Jersey; and
| | - Jules Bergmann
- Anesthesiology and Critical Care Medicine, School of Medicine, and
| | - James C. Fackler
- Anesthesiology and Critical Care Medicine, School of Medicine, and
| | - Sean M. Berenholtz
- Anesthesiology and Critical Care Medicine, School of Medicine, and,Departments of Health Policy and Management and,Armstrong Institute for Patient Safety and Quality, Johns Hopkins Medicine, Baltimore, Maryland
| | | | - Katherine Hoops
- Anesthesiology and Critical Care Medicine, School of Medicine, and
| | - Joe Dwyer
- Extra-Corporeal Membrane Oxygenation Services, Division of Respiratory Care, Departments of Pediatrics and
| | - Elizabeth Colantuoni
- Biostatistics, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland
| | - Aaron M. Milstone
- Departments of Pediatrics and,Hospital Epidemiology and Infection Control, Johns Hopkins Hospital, Baltimore, Maryland
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11
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Chakladar S, Liao R, Landau W, Gamalo M, Wang Y. Discrete Time Multistate Model With Regime Switching for Modeling COVID-19 Disease Progression and Clinical Outcomes. Stat Biopharm Res 2021. [DOI: 10.1080/19466315.2021.1880966] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
| | - Ran Liao
- Eli Lilly & Co., Indianapolis, IN
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12
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Sevdi MS, Demirgan S, Erkalp K, Akyol O, Ozcan FG, Guneyli HC, Tunali MC, Selcan A. Continuous Endotracheal Tube Cuff Pressure Control Decreases Incidence of Ventilator-Associated Pneumonia in Patients with Traumatic Brain Injury. J INVEST SURG 2021; 35:525-530. [PMID: 33583304 DOI: 10.1080/08941939.2021.1881190] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND Ventilator-associated pneumonia (VAP) is a common cause of morbidity and mortality in intensive care unit (ICU), and among the several preventative strategies described to reduce the incidence of VAP, the most important is the endotracheal tube cuff (ETC) pressure. The present study was conducted on 60 patients who required mechanical ventilation (MV) in the ICU with traumatic brain injury (TBI). METHODS The patients were randomized into two groups of 30, in which ETC pressure was regulated using a smart cuff manager (SCM) (Group II), or manual measurement approach (MMA) (Group I). Demographic data, MV duration, length of ICU stay and mortality rates were recorded. The clinical pulmonary infection scores (CPISs), C-reactive protein (CRP) values, and the fraction of inspired oxygen (FiO2) and positive end-expiratory pressure (PEEP) values of the groups were compared at baseline, and at hours 48, 72 and 96. RESULTS In Group I, CPIS values significantly higher than Group II in 48th, 72nd and 96th hours (p < 0.05). In Group I, PEEP values and deep tracheal aspirate (DTA) culture growth rates significantly higher than Group II in 72nd and 96th hours (p < 0.05). CONCLUSION The continuous maintenance of ETC pressure using SCM reduced the incidence of VAP.
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Affiliation(s)
- Mehmet Salih Sevdi
- Department of Anesthesiology and Reanimation, Istanbul Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - Serdar Demirgan
- Department of Anesthesiology and Reanimation, Istanbul Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - Kerem Erkalp
- Department of Anesthesiology and Reanimation, Istanbul University-Cerrahpasa, Institute of Cardiology, Istanbul, Turkey
| | - Onat Akyol
- Department of Anesthesiology and Reanimation, Istanbul Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - Funda Gumus Ozcan
- Department of Anesthesiology and Reanimation, Istanbul Basaksehir Cam and Sakura City Hospital, Istanbul, Turkey
| | - Hasan Cem Guneyli
- Department of Anesthesiology and Reanimation, Istanbul Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - Mehmet Can Tunali
- Department of Anesthesiology and Reanimation, Istanbul Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - Aysin Selcan
- Department of Anesthesiology and Reanimation, Istanbul Bagcilar Training and Research Hospital, Istanbul, Turkey
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13
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Migiyama Y, Sakata S, Iyama S, Tokunaga K, Saruwatari K, Tomita Y, Saeki S, Okamoto S, Ichiyasu H, Sakagami T. Airway Pseudomonas aeruginosa density in mechanically ventilated patients: clinical impact and relation to therapeutic efficacy of antibiotics. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2021; 25:59. [PMID: 33573691 PMCID: PMC7876981 DOI: 10.1186/s13054-021-03488-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 02/04/2021] [Indexed: 01/31/2023]
Abstract
Background The bacterial density of Pseudomonas aeruginosa is closely related to its pathogenicity. We evaluated the effect of airway P. aeruginosa density on the clinical course of mechanically ventilated patients and the therapeutic efficacy of antibiotics. Methods We retrospectively analyzed data of mechanically ventilated ICU patients with P. aeruginosa isolated from endotracheal aspirates. Patients were divided into three groups according to the peak P. aeruginosa density during ICU stay: low (≤ 104 cfu/mL), moderate (105‒106 cfu/mL), and high (≥ 107 cfu/mL) peak density groups. The relationship between peak P. aeruginosa density and weaning from mechanical ventilation, risk factors for isolation of high peak density of P. aeruginosa, and antibiotic efficacy were investigated using multivariate and propensity score-matched analyses. Results Four-hundred-and-sixty-one patients were enrolled. Patients with high peak density of P. aeruginosa had higher inflammation and developed more severe respiratory infections. High peak density of P. aeruginosa was independently associated with few ventilator-free days on day 28 (P < 0.01) and increased ICU mortality (P = 0.047). Risk factors for high peak density of P. aeruginosa were prolonged mechanical ventilation (odd ratio [OR] 3.07 95% confidence interval [CI] 1.35‒6.97), non-antipseudomonal cephalosporins (OR 2.17, 95% CI 1.35‒3.49), hyperglycemia (OR 2.01, 95% CI 1.26‒3.22) during ICU stay, and respiratory diseases (OR 1.9, 95% CI 1.12‒3.23). Isolation of commensal colonizer was associated with lower risks of high peak density of P. aeruginosa (OR 0.43, 95% CI 0.26‒0.73). Propensity score-matched analysis revealed that antibiotic therapy for patients with ventilator-associated tracheobronchitis improved weaning from mechanical ventilation only in the high peak P. aeruginosa group. Conclusions Patients with high peak density of P. aeruginosa had worse ventilator outcome and ICU mortality. In patients with ventilator-associated tracheobronchitis, antibiotic therapy was associated with favorable ventilator weaning only in the high peak P. aeruginosa density group, and bacterial density could be a good therapeutic indicator for ventilator-associated tracheobronchitis due to P. aeruginosa.![]()
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Affiliation(s)
- Yohei Migiyama
- Department of Respiratory Medicine, Kumamoto University Hospital, Kumamoto, Japan. .,Demachi Naika, Kumamoto, Japan.
| | - Shinya Sakata
- Department of Respiratory Medicine, Kumamoto University Hospital, Kumamoto, Japan
| | - Shinji Iyama
- Department of Respiratory Medicine, Kumamoto University Hospital, Kumamoto, Japan
| | - Kentaro Tokunaga
- Department of Respiratory Medicine, Kumamoto University Hospital, Kumamoto, Japan.,Department of Critical Care Medicine, Kumamoto University Hospital, Kumamoto, Japan
| | - Koichi Saruwatari
- Department of Respiratory Medicine, Kumamoto University Hospital, Kumamoto, Japan
| | - Yusuke Tomita
- Department of Respiratory Medicine, Kumamoto University Hospital, Kumamoto, Japan
| | - Sho Saeki
- Department of Respiratory Medicine, Kumamoto University Hospital, Kumamoto, Japan
| | - Shinichiro Okamoto
- Department of Respiratory Medicine, Kumamoto University Hospital, Kumamoto, Japan
| | - Hidenori Ichiyasu
- Department of Respiratory Medicine, Kumamoto University Hospital, Kumamoto, Japan
| | - Takuro Sakagami
- Department of Respiratory Medicine, Kumamoto University Hospital, Kumamoto, Japan
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14
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Natanegara F, Zariffa N, Buenconsejo J, Ran Liao, Cooner F, Lakshminarayanan D, Ghosh S, Schindler JS, Gamalo M. Statistical Opportunities to Accelerate Development for COVID-19 Therapeutics. Stat Biopharm Res 2021. [DOI: 10.1080/19466315.2020.1865195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fanni Natanegara
- Research and Development – Statistics, Eli Lilly and Co, Indianapolis, IN, USA
| | | | - Joan Buenconsejo
- Biometrics, Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, USA
| | - Ran Liao
- Research and Development – Statistics, Eli Lilly and Co, Indianapolis, IN, USA
| | - Freda Cooner
- Center for Design and Analysis, Amgen, Thousand Oaks, CA, USA
| | - Divya Lakshminarayanan
- Clinical Statistics, COVID-19, Biostatistics R&D, GlaxoSmithKline, Collegeville, PA, USA
| | - Samiran Ghosh
- Department of Family Medicine & Public Health Sciences and Center for Molecular Medicine and Genetics, School of Medicine, Wayne State University, Detroit, MI, USA
| | | | - Margaret Gamalo
- Research and Development – Statistics, Eli Lilly and Co, Indianapolis, IN, USA
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15
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Understanding reasons clinicians obtained endotracheal aspirate cultures and impact on patient management to inform diagnostic stewardship initiatives. Infect Control Hosp Epidemiol 2021; 41:240-242. [PMID: 31813405 DOI: 10.1017/ice.2019.347] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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16
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Nagasawa R, Hara Y, Miyazaki T, Murohashi K, Watanabe H, Kaneko T. An autopsy case of ventilator-associated tracheobronchitis caused by Corynebacterium species complicated with diffuse alveolar damage. Respir Med Case Rep 2020; 31:101208. [PMID: 32944501 PMCID: PMC7481557 DOI: 10.1016/j.rmcr.2020.101208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 08/25/2020] [Indexed: 11/30/2022] Open
Abstract
Ventilator-associated tracheobronchitis (VAT) has been reported to occur in 11% of intubated patients. Corynebacterium spp. can cause lower respiratory infections; however, to our knowledge, there have been no reported cases of VAT caused by Corynebacterium spp. A 55-year-old man was hospitalized with acute respiratory failure after autologous peripheral blood stem cell transplantation for Hodgkin lymphoma. Chest computed tomography showed diffuse ground-glass opacities in both lung fields. A few days after tracheal intubation, steroid pulse, and antibacterial drugs, the patient's pulmonary involvement temporarily improved. However, these opacities rapidly deteriorated, leading to death about 2 weeks after hospitalization. No significant bacteria other than Corynebacterium spp. were detected in sputum cultures during treatment and in blood culture at autopsy. Histological findings revealed tracheitis and diffuse alveolar damage. According to these findings, we diagnosed the patient as having VAT caused by Corynebacterium spp. This report suggests that Corynebacterium spp. might be an important causative pathogen of VAT in immunodeficient patients who undergo tracheal intubation. Additionally, optimal treatment for Corynebacterium spp. must be determined.
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Affiliation(s)
- Ryo Nagasawa
- Department of Pulmonology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Yu Hara
- Department of Pulmonology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Takuya Miyazaki
- Department of Hematology and Clinical Immunology, Yokohama City University School of Medicine, Yokohama, Japan
| | - Kota Murohashi
- Department of Pulmonology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Hiroki Watanabe
- Department of Pulmonology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Takeshi Kaneko
- Department of Pulmonology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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17
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Nusrat T, Akter N, Rahman NAA, Godman B, D Rozario DT, Haque M. Antibiotic resistance and sensitivity pattern of Metallo-β-Lactamase Producing Gram-Negative Bacilli in ventilator-associated pneumonia in the intensive care unit of a public medical school hospital in Bangladesh. Hosp Pract (1995) 2020; 48:128-136. [PMID: 32271642 DOI: 10.1080/21548331.2020.1754687] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 04/08/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Ventilator-associated pneumonia (VAP) is the most common nosocomial infection in intensive care units (ICU), accounting for 25% of all ICU infections. Antimicrobial resistance is increasing and becoming a significant health problem worldwide, increasing hospital length of stay, mortality and costs. Identifying antibiotic resistance patterns in VAP is important as this can cause outbreaks in ICUs. To date, there have been limited studies assessing this in Bangladesh. Consequently, the primary objective of this research was to study the species of bacterial growth and to determine the antibiotic resistance patterns of Metallo-β-Lactamase (MBL) producing gram-negative bacilli among ICU patients with VAP in a public medical school hospital, Bangladesh. In addition, identify the factors associated with a positive culture to provide future guidance. METHOD Cross-sectional study performed in the Chattogram Medical College Hospital, Bangladesh. Mueller Hinton agar plates were used for antibiotic sensitivity testing by the Kirby-Buer disc diffusion test. RESULTS Among 105 clinically suspected VAP cases, qualitative cultures were positive in 95 (90%) of them. The most common bacteria identified were Acinetobacter spp. (43.2%), Klebsiella spp. (20%) and Pseudomonas spp. (18.9%). A positive culture was not associated with patients' age or gender. Among 41 isolated Acinetobacter spp., 38 (92.7%) were resistant to gentamicin followed by 36 (87.8%) to ceftriaxone. Among 24 isolated Klebsiella spp., 22 (83.3%) were resistant to ceftriaxone. Among 18 isolated Pseudomonas spp., 16 (88.8%) were resistant to ciprofloxacin, and 13 (72.2%) were resistant to ceftriaxone. Among nine isolated E. coli, all were resistant to ceftriaxone and ciprofloxacin. All four Proteus spp. (100%) isolated were resistant to ciprofloxacin. Additionally, phenotype MBL producing was 65.22% and genotype was 45.65% among imipenem resistant pathogens. Imipenem resistant pathogens were sensitive to amoxyclav, amikacin¸ azithromycin, ceftazidime, ceftriaxone, colistin and gentamycin. CONCLUSION A positive culture was detected in 90% of VAP patients, but it was not associated with the patients' age and gender. The most common bacteria identified were Acinetobacter spp., Klebsiella spp. and Pseudomonas spp., where the majority of these were resistant to ceftriaxone. The results are being used to provide future guidance on the empiric management of VAP in this hospital.
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Affiliation(s)
- Tanzina Nusrat
- Department of Microbiology, Chittagong Medical College , Panchlaish, Chattogram, Bangladesh
| | - Nasima Akter
- Department of Microbiology, Chittagong Medical College , Panchlaish, Chattogram, Bangladesh
| | - Nor Azlina A Rahman
- Department of Physical Rehabilitation Sciences, Kulliyyah of Allied Health Sciences, International Islamic University Malaysia , Bandar Indera Mahkota, Kuantan, Malaysia
| | - Brian Godman
- Department of Pharmacoepidemiology, Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde , Glasgow, UK
- Department of Pharmacy, Faculty of Health Sciences, Sefako Makgatho Health Sciences University , Pretoria, South Africa
- Health Economics Centre, University of Liverpool , Liverpool, UK
- Division of Clinical Pharmacology, Karolinska Institute, Karolinska University Hospital Huddinge , Stockholm, Sweden
| | | | - Mainul Haque
- Faculty of Medicine and Defense Health, Universiti Pertahanan Nasional Malaysia (National Defense University of Malaysia) , Kem Sungai Besi, Kuala Lumpur, Malaysia
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18
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Koulenti D, Arvaniti K, Judd M, Lalos N, Tjoeng I, Xu E, Armaganidis A, Lipman J. Ventilator-Associated Tracheobronchitis: To Treat or Not to Treat? Antibiotics (Basel) 2020; 9:antibiotics9020051. [PMID: 32023886 PMCID: PMC7168312 DOI: 10.3390/antibiotics9020051] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 01/26/2020] [Accepted: 01/29/2020] [Indexed: 01/08/2023] Open
Abstract
Ventilator-associated tracheobronchitis (VAT) is an infection commonly affecting mechanically ventilated intubated patients. Several studies suggest that VAT is associated with increased duration of mechanical ventilation (MV) and length of intensive care unit (ICU) stay, and a presumptive increase in healthcare costs. Uncertainties remain, however, regarding the cost/benefit balance of VAT treatment. The aim of this narrative review is to discuss the two fundamental and inter-related dilemmas regarding VAT, i.e., (i) how to diagnose VAT? and (ii) should we treat VAT? If yes, should we treat all cases or only selected ones? How should we treat in terms of antibiotic choice, route, treatment duration?
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Affiliation(s)
- Despoina Koulenti
- UQ Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane 4029, Australia; (M.J.); (N.L.); (I.T.); (E.X.); (J.L.)
- 2nd Critical Care Department, ‘Attikon’ University Hospital, Athens 11632, Greece;
- Correspondence:
| | - Kostoula Arvaniti
- Department of Critical Care Medicine, ‘Papageorgiou’ General Hospital of Thessaloniki, Thessaloniki 56429, Greece;
| | - Mathew Judd
- UQ Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane 4029, Australia; (M.J.); (N.L.); (I.T.); (E.X.); (J.L.)
| | - Natasha Lalos
- UQ Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane 4029, Australia; (M.J.); (N.L.); (I.T.); (E.X.); (J.L.)
| | - Iona Tjoeng
- UQ Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane 4029, Australia; (M.J.); (N.L.); (I.T.); (E.X.); (J.L.)
| | - Elena Xu
- UQ Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane 4029, Australia; (M.J.); (N.L.); (I.T.); (E.X.); (J.L.)
| | | | - Jeffrey Lipman
- UQ Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane 4029, Australia; (M.J.); (N.L.); (I.T.); (E.X.); (J.L.)
- Department of Intensive Care Medicine, Royal Brisbane and Women’s Hospital, Brisbane 4029, Australia
- Royal Brisbane Clinical Unit, Faculty of Medicine, The University of Queensland, Brisbane 4029, Australia
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19
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Sole ML, Talbert S, Yan X, Penoyer D, Mehta D, Bennett M, Emery KP, Middleton A, Deaton L, Abomoelak B, Deb C. Impact of deep oropharyngeal suctioning on microaspiration, ventilator events, and clinical outcomes: A randomized clinical trial. J Adv Nurs 2019; 75:3045-3057. [PMID: 31241194 PMCID: PMC8331062 DOI: 10.1111/jan.14142] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 04/18/2019] [Accepted: 06/13/2019] [Indexed: 12/12/2022]
Abstract
AIMS To evaluate a deep oropharyngeal suction intervention (NO-ASPIRATE) in intubated patients on microaspiration, ventilator-associated events and clinical outcomes. DESIGN Prospective, two-group, single-blind, randomized clinical trial. METHODS The study was conducted between 2014 - 2017 in 513 participants enroled within 24 hr of intubation and randomized into NO-ASPIRATE or usual care groups. Standard oral care was provided to all participants every 4 hr and deep oropharyngeal suctioning was added to the NO-ASPIRATE group. Oral and tracheal specimens were obtained to quantify α-amylase as an aspiration biomarker. RESULTS Data were analysed for 410 study completers enrolled at least 36 hr: NO-ASPIRATE (N = 206) and usual care (N = 204). Percent of tracheal specimens positive for α-amylase, mean tracheal α-amylase levels over time and ventilator-associated events were not different between groups. The NO-ASPIRATE group had a shorter hospital length of stay and a subgroup with moderate aspiration at baseline had significantly lower α-amylase levels across time. CONCLUSION Hospital length of stay was shorter in the NO-ASPIRATE group and a subgroup of intervention participants had lower α-amylase across time. Delivery of standardized oral care to all participants may have been an intervention itself and possibly associated with the lack of significant findings for most outcomes. IMPACT This trial compared usual care to oral care with a deep suctioning intervention on microaspiration and ventilator-associated events, as this has not been systematically studied. Further research on the usefulness of α-amylase as an aspiration biomarker and the role of oral suctioning, especially for certain populations, is indicated. TRIAL REGISTRATION NUMBER ClinicalTrials.gov: NCT02284178.
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Affiliation(s)
- Mary Lou Sole
- University of Central Florida College of Nursing, Orlando, Florida
- Center for Nursing Research and Advanced Nursing Practice, Orlando Health, Orlando, Florida
| | - Steven Talbert
- University of Central Florida College of Nursing, Orlando, Florida
| | - Xin Yan
- Department of Statistics, University of Central Florida College of Sciences, Orlando, Florida
| | - Daleen Penoyer
- Center for Nursing Research and Advanced Nursing Practice, Orlando Health, Orlando, Florida
| | - Devendra Mehta
- Pediatric Specialty Diagnostic Laboratory, Arnold Palmer Hospital, Orlando Health, Orlando, Florida
| | - Melody Bennett
- Center for Nursing Research and Advanced Nursing Practice, Orlando Health, Orlando, Florida
| | | | - Aurea Middleton
- Center for Nursing Research and Advanced Nursing Practice, Orlando Health, Orlando, Florida
| | - Lara Deaton
- Center for Nursing Research and Advanced Nursing Practice, Orlando Health, Orlando, Florida
| | - Bassam Abomoelak
- Pediatric Specialty Diagnostic Laboratory, Arnold Palmer Hospital, Orlando Health, Orlando, Florida
| | - Chirajyoti Deb
- Pediatric Specialty Diagnostic Laboratory, Arnold Palmer Hospital, Orlando Health, Orlando, Florida
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20
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Comparative Study of CDST & Multiplex PCR to Detect MBL Producing Gram-Negative Bacilli among VAP Patients Admitted in a Public Medical College Hospital of Bangladesh. Pathogens 2019; 8:pathogens8030151. [PMID: 31547453 PMCID: PMC6789483 DOI: 10.3390/pathogens8030151] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 09/04/2019] [Accepted: 09/09/2019] [Indexed: 11/30/2022] Open
Abstract
Background: Ventilator-associated pneumonia (VAP) is the most common nosocomial infection in intensive care units (ICU), which accounts for 25% of all ICU infection. Documenting carbapenem-resistant gram-negative bacilli is very important as these strains may often cause outbreaks in the ICU setting and are responsible for the increased mortality and morbidity or limiting therapeutic options. The classical phenotypic method cannot provide an efficient means of diagnosis of the metallo-β-lactamases (MBLs) producer. Polymerase chain reaction (PCR) assays have lessened the importance of the phenotypic approach by detecting metallo-β-lactamase resistance genes such as New Delhi metallo-β-lactamase (NDM), Imipenemase (IMP), Verona integron-encoded metallo-β-lactamase (VIM), Sao Paulo metallo-β-lactamase (SPM), Germany Imipenemase (GIM). Objective: To compare the results of the Combined Disc Synergy Test (CDST) with that of the multiplex PCR to detect MBL-producing gram-negative bacilli. Materials and Method: A total of 105 endotracheal aspirates (ETA) samples were collected from the ICU of a public school in Bangladesh. This cross-sectional study was carried out in the Department of Microbiology, Chittagong for quantitative culture, CDST test, and multiplex PCR for blaIMP, blaVIM, blaNDM genes of MBL producers. Results: Among the 105 clinically suspected VAP cases, the quantitative culture was positive in 95 (90%) and among 95 g-negative bacilli isolated from VAP patients, 46 (48.42%) were imipenem resistant, 30 (65.22%) were MBL producers by CDST, 21 (45.65%) were identified as MBL producers by multiplex PCR. Conclusion: PCR was highly sensitive and specific for the detection of MBL producers.
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21
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The utility of endotracheal aspirate bacteriology in identifying mechanically ventilated patients at risk for ventilator associated pneumonia: a single-center prospective observational study. BMC Infect Dis 2019; 19:756. [PMID: 31464593 PMCID: PMC6716855 DOI: 10.1186/s12879-019-4367-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Accepted: 08/07/2019] [Indexed: 01/08/2023] Open
Abstract
Background Ventilator-associated pneumonia (VAP) is a well-known, life-threatening disease that persists despite preventative measures and approved antibiotic therapies. This prospective observational study investigated bacterial airway colonization, and whether its detection and quantification in the endotracheal aspirate (ETA) is useful for identifying mechanically ventilated ICU patients who are at risk of developing VAP. Methods 240 patients admitted to 3 ICUs at the Lahey Hospital and Medical Center (Burlington, MA) between June 2014 and June 2015 and mechanically ventilated for > 2 days were included. ETA samples and clinical data were collected. Airway colonization was assessed, and subsequently categorized into “heavy” and “light” by semi-quantitative microbiological analysis of ETAs. VAP was diagnosed retrospectively by the study sponsor according to a pre-specified pneumonia definition. Results Pathogenic bacteria were isolated from ETAs of 125 patients. The most common species isolated was S. aureus (56.8%), followed by K. pneumoniae, P. aeruginosa, and E. coli (35.2% combined). VAP was diagnosed in 85 patients, 44 (51.7%) with no bacterial pathogen, 18 associated with S. aureus and 18 Gram-negative-only cases, and 5 associated with other Gram-positive or mixed species. A higher proportion of patients who were heavily colonized with S. aureus developed VAP (32.4%) associated with S. aureus compared to those lightly colonized (17.6%). The same tendency was seen for patients heavily and lightly colonized with Gram-negative pathogens (30.0 and 0.0%, respectively). Detection of S. aureus in the ETA preceded S. aureus VAP by approximately 4 days, while Gram-negative organisms were first detected 2.5 days prior to Gram-negative VAP. VAP was associated with significantly longer duration of mechanical ventilation and hospitalization regardless of microbiologic cause when compared to patients who did not develop VAP. Conclusions The overall VAP rate was 35%. Heavy tracheal colonization supported identification of patients at higher risk of developing a corresponding S. aureus or Gram-negative VAP. Detection of bacterial ETA-positivity tended to precede VAP. Electronic supplementary material The online version of this article (10.1186/s12879-019-4367-7) contains supplementary material, which is available to authorized users.
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Hernandez Padilla AC, Trampont T, Lafon T, Daix T, Cailloce D, Barraud O, Dalmay F, Vignon P, François B. Is prehospital endobronchial intubation a risk factor for subsequent ventilator associated pneumonia? A retrospective analysis. PLoS One 2019; 14:e0217466. [PMID: 31120987 PMCID: PMC6532927 DOI: 10.1371/journal.pone.0217466] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 05/13/2019] [Indexed: 02/04/2023] Open
Abstract
More than half of patients under mechanical ventilation in the intensive care unit (ICU) are field-intubated, which is a known risk factor for ventilator associated pneumonia (VAP). We assessed whether field endobronchial intubation (EBI) is associated with the development of subsequent VAP during the ICU stay. This retrospective, nested case-control study was conducted in a cohort of field-intubated patients admitted to an ICU of a teaching hospital during a three-year period. Cases were defined as field-intubated patients with EBI and controls corresponded to field-intubated patients with proper position of the tracheal tube on admission chest X-ray. Primary endpoint was the development of early VAP. Secondary endpoints included the development of early ventilator associated tracheo-bronchitis, late VAP, duration of mechanical ventilation, length of stay and mortality in the ICU. A total of 145 patients were studied (mean age: 54 ± 19 years; men: 74%). Reasons for field intubation were predominantly multiple trauma (49%) and cardiorespiratory arrest (38%). EBI was identified in 33 patients (23%). Fifty-three patients (37%) developed early or late VAP. EBI after field intubation was associated with a nearly two-fold increase of early VAP, though not statistically significant (30% vs. 17%: p = 0.09). No statistically significant difference was found regarding secondary outcomes. The present study suggests that inadvertent prehospital EBI could be associated with a higher incidence of early-onset VAP. Larger studies are required to confirm this hypothesis. Whether strategies aimed at decreasing the incidence and duration of EBI could reduce the incidence of subsequent VAP remains to be determined.
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Affiliation(s)
| | | | - Thomas Lafon
- INSERM CIC 1435, CHU Dupuytren, Limoges, France
- Service d’Accueil des Urgences, CHU Dupuytren, Limoges, France
| | - Thomas Daix
- INSERM CIC 1435, CHU Dupuytren, Limoges, France
- Réanimation polyvalente, CHU Dupuytren, Limoges, France
- INSERM UMR 1092, Université Limoges, Limoges, France
| | | | - Olivier Barraud
- INSERM UMR 1092, Université Limoges, Limoges, France
- Laboratoire de Bactériologie–Virologie–Hygiène, CHU Dupuytren, Limoges, France
| | | | - Philippe Vignon
- INSERM CIC 1435, CHU Dupuytren, Limoges, France
- Réanimation polyvalente, CHU Dupuytren, Limoges, France
| | - Bruno François
- INSERM CIC 1435, CHU Dupuytren, Limoges, France
- Réanimation polyvalente, CHU Dupuytren, Limoges, France
- INSERM UMR 1092, Université Limoges, Limoges, France
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Sole ML, Talbert S, Yan X, Penoyer D, Mehta D, Bennett M, Middleton A, Emery KP. Nursing oral suction intervention to reduce aspiration and ventilator events (NO-ASPIRATE): A randomized clinical trial. J Adv Nurs 2019; 75:1108-1118. [PMID: 30507045 PMCID: PMC6568323 DOI: 10.1111/jan.13920] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 10/13/2018] [Accepted: 10/22/2018] [Indexed: 01/04/2023]
Abstract
AIM The primary aim of this study is to compare an oropharyngeal suction intervention versus usual care on microaspiration in intubated patients. Secondary aims are to evaluate the intervention on ventilator-associated condition rates, time to occurrence and compare tracheal-oral α-amylase ratios between groups. DESIGN Prospective randomized clinical trial. METHODS The study received funding from the National Institutes of Health in February 2014 and Institutional Review Board approval in July 2013. Over 4 years, a convenience sample of 600 orally intubated, ventilated adult patients will be enrolled within 24 hr of intubation. The target sample is 400 participants randomized to the two groups. The intervention involves enhanced suctioning of the mouth and oropharynx every 4 hr, while the usual care group receives a sham suctioning. The research team will deliver usual oral care to all patients every 4 hr and collect oral and tracheal specimens every 12 hr, to quantify α-amylase levels to detect aspiration of oral secretions. Study completers must be enrolled at least 36 hr (baseline and three paired samples). Outcomes include α-amylase levels, percent of positive specimens, ventilator-associated conditions, length of stay, ventilator hours, and discharge disposition. DISCUSSION Enrolment has closed, and data analysis has begun. Subgroup analyses emerged, contributing to future research knowledge. IMPACT Standardized interventions have reduced but do not address all risk factors associated with ventilator-associated conditions. This study provides the potential to reduce microaspiration and associated sequelae in critically ill, intubated patients.
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Affiliation(s)
- Mary Lou Sole
- University of Central Florida College of Nursing, Orlando, Florida
- Orlando Health, Orlando, Florida
| | - Steven Talbert
- University of Central Florida College of Nursing, Orlando, Florida
| | - Xin Yan
- University of Central Florida College of Sciences, Orlando, Florida
| | - Daleen Penoyer
- Center for Nursing Research and Advanced Nursing Practice, Orlando Health, Orlando, Florida
| | | | | | | | - Kimberly Paige Emery
- University of Central Florida College of Nursing, Orlando, Florida
- Orlando Health, Orlando, Florida
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Ventilator-associated events in children: A review of literature. Aust Crit Care 2018; 32:55-62. [PMID: 30554940 DOI: 10.1016/j.aucc.2018.11.063] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 11/12/2018] [Accepted: 11/16/2018] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The complexity and variation in ventilator associated pneumonia (VAP) definitions in paediatrics may pose threats to the reliable identification of VAP. The revision of the surveillance definition to ventilator-associated event (VAE) has been mandated in adult populations, to overcome these issues. However, the evidence for application of the definition is unknown in children. OBJECTIVES To review the evidence on the application of the new VAE surveillance definition in paediatric population and examine the potential challenges in clinical practice. REVIEW METHODS A systematic approach was used to locate and synthesise the relevant paediatric literature. Studies were appraised according to epidemiological appraisal instrument (EAI) and the grades of evidence in the National Health Medical Research Council (NHMRC) guidelines. RESULTS Seven studies met the inclusion criteria. Quality of study methods was above 50% on the EAI. The overall grade of evidence was assessed as C (satisfactory). The incidence of VAE in children ranged from 1.1 to 20.9 per 1000 ventilator days as a result of variations in surveillance criteria across included studies. There is little agreement between the new VAE and PNU/VAP surveillance definition in the identification of VAP. Challenges in the application of VAE surveillance were related to; the difference in modes of ventilation used in children versus adults, inconclusive criteria tailored to paediatric samples and a lack of data that support for automatic data extraction applied in paediatric studies. CONCLUSION This review demonstrated promising evidence using the new VAE surveillance definition to define the VAE in children, but the level of the evidence is low. Before the possibility of real implementation in clinical settings, challenges related to VAE paediatric specific criteria' and the value of automated data collection need to be considered.
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Peña-López Y, Ramirez-Estrada S, Eshwara VK, Rello J. Limiting ventilator-associated complications in ICU intubated subjects: strategies to prevent ventilator-associated events and improve outcomes. Expert Rev Respir Med 2018; 12:1037-1050. [PMID: 30460868 DOI: 10.1080/17476348.2018.1549492] [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] [Indexed: 12/13/2022]
Abstract
Introduction: Intubation is required to maintain the airways in comatose patients and enhance oxygenation in hypoxemic or ventilation in hypercapnic subjects. Recently, the Centers of Disease Control (CDC) created new surveillance definitions designed to identify complications associated with poor outcomes. Areas covered: The new framework proposed by CDC, Ventilator-Associated Events (VAE), has a range of definitions encompassing Ventilator-Associated Conditions (VAC), Infection-related Ventilator-Associated Complications (IVAC), or Possible Ventilator-Associated Pneumonia - suggesting replacing the traditional definitions of Ventilator-Associated Tracheobronchitis (VAT) and Ventilator-Associated Pneumonia (VAP). They focused more on oxygenation variations than on Chest-X rays or inflammatory biomarkers. This article will review the spectrum of infectious (VAP & VAT) complications, as well as the main non-infectious complications, namely pulmonary edema, acute respiratory distress syndrome (ARDS) and atelectasis. Strategies to limit these complications and improve outcomes will be presented. Expert commentary: Improving outcomes should be the objective of implementing bundles of prevention, based on risk factors amenable of intervention. Promotion of measures that reduce the exposition or duration of intubation should be a priority.
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Affiliation(s)
- Yolanda Peña-López
- a Pediatric Critical Care Department , Vall d'Hebron Barcelona Hospital Campus , Barcelona , Spain
| | | | - Vandana Kalwaje Eshwara
- c Department of Microbiology, Kasturba Medical College, Manipal Academy of Higher Education , Manipal University , Manipal , India
| | - Jordi Rello
- d Clinical Research/epidemiology In Pneumonia & Sepsis , Vall d'Hebron Institut of Research & Centro de Investigacion Biomedica en Red (CIBERES) , Barcelona , Spain
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Alves AE, Pereira JM. Antibiotic therapy in ventilator-associated tracheobronchitis: a literature review. Rev Bras Ter Intensiva 2018; 30:80-85. [PMID: 29742211 PMCID: PMC5885235 DOI: 10.5935/0103-507x.20180014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 06/02/2017] [Indexed: 12/16/2022] Open
Abstract
The concept of ventilator-associated tracheobronchitis is controversial; its
definition is not unanimously accepted and often overlaps with
ventilator-associated pneumonia. Ventilator-associated tracheobronchitis has an
incidence similar to that of ventilator-associated pneumonia, with a high
prevalence of isolated multiresistant agents, resulting in an increase in the
time of mechanical ventilation and hospitalization but without an impact on
mortality. The performance of quantitative cultures may allow better diagnostic
definition of tracheobronchitis associated with mechanical ventilation, possibly
avoiding the overdiagnosis of this condition. One of the major difficulties in
differentiating between ventilator-associated tracheobronchitis and
ventilator-associated pneumonia is the exclusion of a pulmonary infiltrate by
chest radiography; thoracic computed tomography, thoracic ultrasonography, or
invasive specimen collection may also be required. The institution of systemic
antibiotic therapy does not improve the clinical impact of ventilator-associated
tracheobronchitis, particularly in reducing time of mechanical ventilation,
hospitalization or mortality, despite the possible reduced progression to
ventilator-associated pneumonia. However, there are doubts regarding the
methodology used. Thus, considering the high prevalence of tracheobronchitis
associated with mechanical ventilation, routine treatment of this condition
would result in high antibiotic usage without clear benefits. However, we
suggest the institution of antibiotic therapy in patients with tracheobronchitis
associated with mechanical ventilation and septic shock and/or worsening of
oxygenation, and other auxiliary diagnostic tests should be simultaneously
performed to exclude ventilator-associated pneumonia. This review provides a
better understanding of the differentiation between tracheobronchitis associated
with mechanical ventilation and pneumonia associated with mechanical
ventilation, which can significantly decrease the use of antibiotics in
critically ventilated patients.
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Affiliation(s)
- Abel Eduardo Alves
- Serviço de Medicina Intensiva, Hospital do Divino Espírito Santo, Ponta Delgada, Portugal
| | - José Manuel Pereira
- Serviço de Medicina Intensiva e Emergência, Centro Hospitalar de São João, Porto, Portugal
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Vijay G, Mandal A, Sankar J, Kapil A, Lodha R, Kabra SK. Ventilator Associated Pneumonia in Pediatric Intensive Care Unit: Incidence, Risk Factors and Etiological Agents. Indian J Pediatr 2018; 85:861-866. [PMID: 29616405 PMCID: PMC7101689 DOI: 10.1007/s12098-018-2662-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 03/09/2018] [Indexed: 11/18/2022]
Abstract
OBJECTIVES To study the incidence, etiology and risk factors associated with ventilator associated pneumonia (VAP) in children. METHODS This prospective cohort study was conducted on patients admitted to the Pediatric Intensive Care Unit (PICU) of a tertiary care institute of North India, from June 2012 through March 2014, who received mechanical ventilation for more than 24 h. All enrolled children were assessed daily for development of ventilator associated pneumonia (VAP) using the case definition given by Centers for Disease Control and Prevention (CDC). Chest radiograph and microbiologic samplings were performed in children suspected to have VAP. Risk factors associated with VAP were calculated by doing bivariate and multivariate analysis. RESULTS A total of 128 patients were screened and 86 were enrolled (median age 30 mo 95% CI 4.0-84.0; 72% boys). The most common admitting diagnosis was sepsis (16%) followed by acyanotic congenital heart disease with pneumonia (14%) and the most common indication for ventilation was respiratory failure (45.3%). The incidence of VAP according to CDC criteria was 38.4%, while the incidence of microbiologically confirmed VAP was 24.4%. The incidence of ventilator associated tracheobronchitis (VAT) was found to be 11.6%. Acinetobacter was the most frequently isolated organism (47%) followed by Pseudomonas (28%), Klebsiella (15%), E. coli (5%) and Enterobacter (5%). Risk factors for VAP on bivariate analysis were use of proton pump inhibitor (PPI) (p = 0.027, OR 5.2, 95% CI 1.1-24.3), enteral feeding (p < 0.001, OR 6.5, 95% CI 2.1-19.4) and re-intubation (p = 0.024, OR 3.3 and 95% CI 1.1-9.6). On multivariate analysis, use of PPI (p = 0.03, OR 8.47, 95% CI 1.19-60.33) and enteral feeding (p < 0.001, OR 12.2, 95% CI 2.58-57.78) were identified as independent risk factors for VAP. CONCLUSIONS Ventilator associated pneumonia is an important complication in children receiving mechanical ventilation in PICU and Gram negative bacilli (Acinetobacter and Pseudomonas) being the important causative agents. Ventilator associated tracheobronchitis is an emerging entity; recognition and treatment of same might prevent the development of VAP.
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Affiliation(s)
- Gnanaguru Vijay
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Anirban Mandal
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Jhuma Sankar
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Arti Kapil
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Rakesh Lodha
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, 110029, India.
| | - S K Kabra
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, 110029, India
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A newly developed tracheal tube offering 'pressurised sealing' outperforms currently available tubes in preventing cuff leakage: A benchtop study. Eur J Anaesthesiol 2018; 34:411-416. [PMID: 27479464 DOI: 10.1097/eja.0000000000000493] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND No currently used tracheal tube offers full protection against aspiration of oropharyngeal secretions into the lower airways. OBJECTIVE We developed a tracheal tube equipped with two polyvinylchloride (PVC) cuffs with a supplementary port opening between the cuffs through which a continuous positive pressure of 5 cmH2O is provided [double-cuffed PVC (PVCdc)]. We compared this PVCdc with four different cuff types (cylindrical PVC, conical PVC, cylindrical polyurethane and conical polyurethane). DESIGN A comparison study using an in-vitro benchtop model of an artificial rigid trachea. INTERVENTIONS Tracheal tubes were placed in the artificial trachea. Both cuffs were kept inflated at 25 cmH2O. Total 3 ml dyed water was placed above the cuff and leakage recorded under static and dynamic [5 cmH2O positive end-expiratory pressure (PEEP) alone or positive pressure ventilation plus 5 cmH2O PEEP] conditions. At the end of the dynamic experiments, PEEP was zeroed (PEEP alone) or the tracheal tubes were disconnected from the ventilator (positive pressure ventilation plus PEEP). RESULTS In the static model, leakage flows [medians (range)] were 9.8 (6.2 to 20) for the cylindrical PVC, 1.3 (0.2 to 3.8) for the conical PVC, 0.03 (0.007 to 0.1) for the cylindrical polyurethane, 0.04 (0.003 to 0.2) for the conical polyurethane and 0.0 (0.0 to 0.0) ml min for the PVCdc cuff (P < 0.001, PVCdc vs. all other cuffs). In the dynamic setting, no leakage was detected for up to 60 min with any of the cuffs studied. Loss of PEEP or tracheal tube disconnection resulted in dye inflow alongside all cuffs except for the PVCdc (P < 0.001, PVCdc vs. all other cuffs). CONCLUSION A 'pressure seal' incorporated in a double-cuffed tracheal tube prevented fluid passage into the lower airways. Clinically, this may translate into absence of inflow of bacteriologically contaminated secretions into the lungs and thus a lower incidence of ventilator-associated infection.
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Aerosolized antibiotics: For prophylaxis OR for treatment? J Crit Care 2018; 47:348. [PMID: 29929871 DOI: 10.1016/j.jcrc.2018.06.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 06/05/2018] [Indexed: 11/23/2022]
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Martín-Aspas A, Guerrero-Sánchez FM, García-Colchero F, Rodríguez-Roca S, Girón-González JA. Differential characteristics of Acinetobacter baumannii colonization and infection: risk factors, clinical picture, and mortality. Infect Drug Resist 2018; 11:861-872. [PMID: 29922077 PMCID: PMC5995284 DOI: 10.2147/idr.s163944] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Objectives The objectives of this study were to detect those characteristics that were specifically associated with infection or colonization by Acinetobacter baumannii, describe the clinical manifestations of those patients in whom the infection was detected in intensive care unit (ICU) or non-ICU wards, and analyze the prognosis-associated factors in patients from whom A. baumannii was isolated. Patients and methods A sample of 122 patients from whom A. baumannii was recovered during an endemic period in a teaching hospital was included. Only those cases in which A. baumannii was recovered as the unique microbe were considered. Demographic data; ward of admission; intrinsic and extrinsic risk factors for infection or colonization; chronic underlying condition severity, as evaluated by the McCabe classification or Charlson index and Acute Physiology and Chronic Health Evaluation (APACHE) II score; and clinical manifestations were analyzed to differentiate specific characteristics of colonized or infected patients. Factors independently associated with the mortality at 30 days were also analyzed by Cox regression. Results A total of 73 (60%) patients were colonized and 49 (40%) individuals were infected with A. baumannii. A non-fatal McCabe class (when compared to ultimately and rapidly fatal), days of hospitalization prior to isolation of A. baumannii, and present ICU admission were associated with the diagnosis of infection. The more frequent clinical picture was respiratory infection (tracheobronchitis, 16 [33%] cases; pneumonia, 27 [55%] cases). Mortality at 30 days was 24% (n=29). A non-fatal McCabe class (Exp[B] 2.44, 95% confidence interval [CI] 1.05–5.66, p=0.039) and the absence of infection (Exp[B] 2.75, 95% CI 1.18–6.38, p=0.019) were independently associated with survival. Conclusion Parameters associated with infection by A. baumannii in an endemic situation are the admission at ICU and the number of days of hospitalization. Mortality of patients from whom A. baumannii was isolated was independently influenced by the chronic underlying basal state and the presence of infection by A. baumannii.
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Affiliation(s)
- Andrés Martín-Aspas
- Infectious Diseases Unit, Hospital Universitario Puerta del Mar, Facultad de Medicina, Universidad de Cádiz, Instituto para la Investigación e Innovación en Ciencias Biomédicas de Cádiz (INiBICA), Cádiz, Spain
| | - Francisca M Guerrero-Sánchez
- Infectious Diseases Unit, Hospital Universitario Puerta del Mar, Facultad de Medicina, Universidad de Cádiz, Instituto para la Investigación e Innovación en Ciencias Biomédicas de Cádiz (INiBICA), Cádiz, Spain
| | - Francisco García-Colchero
- Infectious Diseases Unit, Hospital Universitario Puerta del Mar, Facultad de Medicina, Universidad de Cádiz, Instituto para la Investigación e Innovación en Ciencias Biomédicas de Cádiz (INiBICA), Cádiz, Spain
| | - Sebastián Rodríguez-Roca
- Infectious Diseases Unit, Hospital Universitario Puerta del Mar, Facultad de Medicina, Universidad de Cádiz, Instituto para la Investigación e Innovación en Ciencias Biomédicas de Cádiz (INiBICA), Cádiz, Spain
| | - José-Antonio Girón-González
- Infectious Diseases Unit, Hospital Universitario Puerta del Mar, Facultad de Medicina, Universidad de Cádiz, Instituto para la Investigación e Innovación en Ciencias Biomédicas de Cádiz (INiBICA), Cádiz, Spain
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Alves J, Peña-López Y, Rojas JN, Campins M, Rello J. Can We Achieve Zero Hospital-Acquired Pneumonia? CURRENT TREATMENT OPTIONS IN INFECTIOUS DISEASES 2018. [DOI: 10.1007/s40506-018-0164-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Cho JY, Kim Y, Lee SH, Lee YJ, Park JS, Yoon HI, Yim JJ, Lee JH, Lee CT, Cho YJ. Bronchoscopic Improvement of Tracheobronchitis Due to Methicillin-Resistant Staphylococcus aureus After Aerosolized Vancomycin: A Case Series. J Aerosol Med Pulm Drug Deliv 2018; 31:372-375. [PMID: 29583108 DOI: 10.1089/jamp.2017.1447] [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] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Ventilator-associated tracheobronchitis (VAT) is an important risk factor for ventilator-associated pneumonia (VAP). The efficacy of aerosolized vancomycin (AV) in treating VAT has not been clearly demonstrated. METHODS Four mechanically ventilated patients with methicillin-resistant Staphylococcus aureus (MRSA) pneumonia were treated with an additional AV. AV (250 mg twice per day) was administered through a vibrating mesh device for 5 days. All patients were receiving intravenous vancomycin and had severe tracheobronchitis, based on bronchoscopic findings before or soon after additional AV treatment. RESULTS After several days of AV treatment, follow-up bronchoscopies showed dramatic improvement of tracheobronchitis. All patients achieved microbiological eradication of MRSA. Finally, two of four patients survived through to hospital discharge. CONCLUSION This case series study suggests a potential role of AV in the treatment of MRSA tracheobronchitis, which were accompanied by VAP. Clinical trial addressing the efficacy of AV in MRSA VAT and/or VAP should be needed.
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Affiliation(s)
- Jun Yeun Cho
- 1 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital , Seongnam, Republic of Korea
| | - Youlim Kim
- 1 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital , Seongnam, Republic of Korea
| | - Sang Hoon Lee
- 1 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital , Seongnam, Republic of Korea
| | - Yeon Joo Lee
- 1 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital , Seongnam, Republic of Korea
| | - Jong Sun Park
- 1 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital , Seongnam, Republic of Korea
| | - Ho Il Yoon
- 1 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital , Seongnam, Republic of Korea
| | - Jae-Joon Yim
- 2 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Hospital , Seoul, Republic of Korea
| | - Jae Ho Lee
- 1 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital , Seongnam, Republic of Korea
| | - Choon-Taek Lee
- 1 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital , Seongnam, Republic of Korea
| | - Young-Jae Cho
- 1 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital , Seongnam, Republic of Korea
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Efficacy of continuous versus intermittent subglottic secretion drainage in preventing ventilator-associated pneumonia in patients requiring mechanical ventilation: A single-center randomized controlled trial. Oncotarget 2018; 9:15876-15882. [PMID: 29662613 PMCID: PMC5882304 DOI: 10.18632/oncotarget.24630] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 02/24/2018] [Indexed: 01/21/2023] Open
Abstract
Objective Aspiration of subglottic secretion is a widely used intervention to prevent ventilator-associated pneumonia (VAP). This study aimed to compare the efficacy of continuous and intermittent subglottic secretion drainage (SSD) in preventing VAP. Methods A single-center randomized controlled trial was conducted on adult postoperative patients who were expected to undergo mechanical ventilation for more than 48 hours. Primary outcome measure was incidence of VAP and secondary outcome measures were length of mechanical ventilation and intensive-care unit (ICU) stay. Results Fifty-nine patients received continuous SSD, while 60 patients received intermittent SSD. Of these 119 patients, 88 (74%) were excluded and 15 and 16 patients were allocated to receive continuous and intermittent SSD, respectively. VAP was detected in 4 (26.7%) and 7 (43.8%) patients in the continuous and intermittent groups, respectively, (p=0.320). The length of mechanical ventilation was significantly shorter (p=0.034) in the continuous group (99.5±47.1 h) than in the intermittent group (159.9±94.5 h). The length of ICU stay was also shorter (p=0.0097) in the continuous group (6.3±2.1 days) than the intermittent group (9.8±4.8 days). Conclusions Although continuous SSD did not reduce the incidence of VAP, it reduced the length of mechanical ventilation and ICU stay when compared to intermittent SSD.
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In vitro evaluation of aerosol delivery of aztreonam lysine (AZLI): an adult mechanical ventilation model. Expert Opin Drug Deliv 2017; 14:1447-1453. [PMID: 29041861 DOI: 10.1080/17425247.2017.1393411] [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: 10/18/2022]
Abstract
BACKGROUND The delivery profile of Aztreonam lysine (AZLI) during mechanical ventilation (MV) is unknown. We evaluated the amount of AZLI drug delivered using an in vitro model of adult MV. METHODS An adult lung model designed to mimic current clinical practice was used. Both nebulizers were placed before a Y-piece and 4 settings were tested: A) Aeroneb solo® [AS] with a t-piece; B) AS with the spacer; C) M-Neb® [MN] with a t-piece and D) MN with the spacer. Performance was evaluated in terms of: 1) Mass median aerodynamic diameter (MMAD); 2) Geometric standard deviation (GSD), 3) Fine particle dose (FPD), 4) Fine particle fraction (FPF), 5) Inhalable mass (IM), and 6) Recovery rate (RR). RESULTS Both devices showed an adequate delivery of AZLI during MV, with MMAD between 2.4-2.5 µm and 87% of FPF. The FPD (38.8 and 31.7), IM (44.8 and 36.1) and RR (30 and 24) were similar for AS and MN respectively. Nebulizer aerosol delivery increased (50 and 70% respectively) for both nebulizers when using the spacer. CONCLUSION Both AS and MN showed a good aerosol delivery profile for AZLI during in vitro mechanical ventilation. Better aerosol delivery performance was obtained using the spacer.
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Mourani PM, Sontag MK. Ventilator-Associated Pneumonia in Critically Ill Children: A New Paradigm. Pediatr Clin North Am 2017; 64:1039-1056. [PMID: 28941534 DOI: 10.1016/j.pcl.2017.06.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Ventilator-associated pneumonia (VAP) is a serious complication of critical illness. Surveillance definitions have undergone revisions for more objective and consistent reporting. The 1 organism-1 disease paradigm for microbial involvement may not adequately apply to many cases of VAP, in which pathogens are introduced to a pre-existing and often complex microbial community that facilitates or hinders the potential pathogen, consequently determining whether progression to VAP occurs. As omics technology is applied to VAP, a paradigm is emerging incorporating simultaneous assessments of microbial populations and their activity, as well as the host response, to personalize prevention and treatment.
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Affiliation(s)
- Peter M Mourani
- Section of Critical Care, Department of Pediatrics, University of Colorado Denver, School of Medicine, Children's Hospital Colorado, 13121 East 17th Avenue, MS8414, Aurora, CO 80045, USA.
| | - Marci K Sontag
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Denver Anschutz Medical Campus, 13001 East 17th, B119, Aurora, CO 80045, USA
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Hashemi SH, Hashemi N, Esna-Ashari F, Taher A, Dehghan A. Clinical Features and Antimicrobial Resistance of Bacterial Agents of Ventilator-Associated Tracheobronchitis in Hamedan, Iran. Oman Med J 2017; 32:403-408. [PMID: 29026472 DOI: 10.5001/omj.2017.76] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVES Ventilator-associated tracheobronchitis (VAT) is a common cause of mortality and morbidity in patients admitted to intensive care units (ICUs). This study was conducted to evaluate the clinical course, etiology, and antimicrobial resistance of bacterial agents of VAT in ICUs in Hamedan, Iran. METHODS During a 12-month period, all patients with VAT in a medical and a surgical ICU were included. The criteria for the diagnosis of VAT were fever, mucus production, a positive culture of tracheal secretions, and the absence of lung infiltration. Clinical course, including changes in temperature and tracheal secretions, and outcomes were followed. The endotracheal aspirates were cultured on blood agar and chocolate agar, and antimicrobial susceptibility testing of isolates were performed using the disk diffusion method. RESULTS Of the 1 070 ICU patients, 69 (6.4%) were diagnosed with VAT. The mean interval between the patient's intubation and the onset of symptoms was 4.7±8.5 days. The mean duration of response to treatment was 4.9±4.7 days. A total of 23 patients (33.3%) progressed to ventilator-associated pneumonia (VAP), and 38 patients (55.0%) died. The most prevalent bacterial isolates included Acinetobacter baumannii (24.6%), Pseudomonas aeruginosa (20.2%), and Enterobacter (13.0%). P. aeruginosa and Enterobacter were the most prevalent bacteria in surgical ICU, and A. baumannii and K. pneumoniae were the most common in the medical ICU. All A. baumannii and Citrobacter species were multidrug-resistant (MDR). MDR pathogens were more prevalent in medical ICU compared to surgical ICU (p < 0.001). CONCLUSIONS VAT increases the rates of progression to VAP, the need for tracheostomy, and the incidence of mortality in ICUs. Most bacterial agents of VAT are MDR. Preventive policies for VAP, including the use of ventilator care bundle, and appropriate empirical antibiotic therapy for VAT may reduce the incidence of VAP.
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Affiliation(s)
- Seyyed Hamid Hashemi
- Department of Infectious Diseases, Hamedan University of Medical Sciences, Hamedan, Iran
| | - Naeimeh Hashemi
- Department of Infectious Diseases, Hamedan University of Medical Sciences, Hamedan, Iran
| | - Farzaneh Esna-Ashari
- Department of Community and Preventive Medicine, Hamedan University of Medical Sciences, Hamedan, Iran
| | - Abbas Taher
- Department of Anesthesiology and Intensive Care Unit, Hamedan University of Medical Sciences, Hamedan, Iran
| | - Arash Dehghan
- Department of Pathology, Hamedan University of Medical Sciences, Hamedan, Iran
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Chen JK, Martin-McNew BL, Lubsch LM. Nebulized Gentamicin as an Alternative to Nebulized Tobramycin for Tracheitis in Pediatric Patients. J Pediatr Pharmacol Ther 2017; 22:9-14. [PMID: 28337076 PMCID: PMC5341539 DOI: 10.5863/1551-6776-22.1.9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVES Tracheitis is an infection of the lower respiratory tract and is defined by the US Centers for Disease Control and Prevention (CDC) based on signs and symptoms with no radiographic evidence of pneumonia. One method of treatment involves the use of tobramycin given by nebulizer. The purpose of this study was to compare the safety and efficacy of nebulized gentamicin with nebulized tobramycin. METHODS This study was conducted in patients under 21 years of age who received greater than or equal to 1 day of gentamicin, 80 mg, or tobramycin, 300 mg, given twice a day by nebulization within the 14-month study period. The primary endpoint was amount of time until the patient no longer met the CDC definition of tracheitis. RESULTS There were 19 patients who presented with 60 separate encounters. The average age of the patients within the gentamicin group was 7.2 and 5 years old within the tobramycin group. The average duration of time for the gentamicin treatment encounters to be free of the CDC definition of tracheitis was 3.36 days compared to 3.17 days with tobramycin. No adverse effects were observed that were attributable to aminoglycoside nebulization. CONCLUSIONS No differences were detected between the safety and efficacy of intravenous gentamicin administered twice a day by nebulizer and that of tobramycin inhalation solution given twice daily in children without cystic fibrosis.
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Abstract
OBJECTIVE Suspected ventilator-associated infection is the most common reason for antibiotics in the PICU. We sought to characterize the clinical variables associated with continuing antibiotics after initial evaluation for suspected ventilator-associated infection and to determine whether clinical variables or antibiotic treatment influenced outcomes. DESIGN Prospective, observational cohort study conducted in 47 PICUs in the United States, Canada, and Australia. Two hundred twenty-nine pediatric patients ventilated more than 48 hours undergoing respiratory secretion cultures were enrolled as "suspected ventilator-associated infection" in a prospective cohort study, those receiving antibiotics of less than or equal to 3 days were categorized as "evaluation only," and greater than 3 days as "treated." Demographics, diagnoses, comorbidities, culture results, and clinical data were compared between evaluation only and treated subjects and between subjects with positive versus negative cultures. SETTING PICUs in 47 hospitals in the United States, Canada, and Australia. SUBJECTS All patients undergoing respiratory secretion cultures during the 6 study periods. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS Treated subjects differed from evaluation-only subjects only in frequency of positive cultures (79% vs 36%; p < 0.0001). Subjects with positive cultures were more likely to have chronic lung disease, tracheostomy, and shorter PICU stay, but there were no differences in ventilator days or mortality. Outcomes were similar in subjects with positive or negative cultures irrespective of antibiotic treatment. Immunocompromise and higher Pediatric Logistic Organ Dysfunction scores were the only variables associated with mortality in the overall population, but treated subjects with endotracheal tubes had significantly lower mortality. CONCLUSIONS Positive respiratory cultures were the primary determinant of continued antibiotic treatment in children with suspected ventilator-associated infection. Positive cultures were not associated with worse outcomes irrespective of antibiotic treatment although the lower mortality in treated subjects with endotracheal tubes is notable. The necessity of continuing antibiotics for a positive respiratory culture in suspected ventilator-associated infection requires further study.
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Implementing a care bundle approach reduces ventilator-associated pneumonia and delays ventilator-associated tracheobronchitis in children: differences according to endotracheal or tracheostomy devices. Int J Infect Dis 2016; 52:43-48. [PMID: 27686727 DOI: 10.1016/j.ijid.2016.09.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 09/18/2016] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVE To reduce ventilator-associated infections (VARI) and improve outcomes for children. METHODS This prospective interventional cohort study was conducted in a paediatric intensive care unit (PICU) over three periods: pre-intervention, early post-intervention, and late post-intervention. These children were on mechanical ventilation (MV) for ≥48h. RESULTS Overall, 312 children (11.9% of whom underwent tracheostomy) and 6187 ventilator-days were assessed. There was a significant reduction in ventilator-associated pneumonia (VAP) among tracheostomized patients (8.16, 3.27, and 0.65 per 1000 tracheostomy ventilation-days before the intervention, after the general bundle implementation, and after the tracheostomy intervention, respectively). The median time from onset of MV to diagnosis of ventilator-associated tracheobronchitis (VAT) increased from 5.5 to 48 days in the late post-intervention period (p=0.004), and was associated with a significant increase in median 28-day ventilator-free days and PICU-free days. Tracheostomy (odds ratio 7.44) and prolonged MV (odds ratio 2.75) were independent variables significantly associated with VARI. A trend towards a reduction in PICU mortality was observed, from 28.4% to 16.6% (relative risk 0.58). CONCLUSIONS The implementation of a care bundle to prevent VARI in children had a different impact on VAP and VAT, diminishing VAP rates and delaying VAT onset, resulting in reduced healthcare resource use. Tracheostomized children were at increased risk of VARI, but preventive measures had a greater impact on them.
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Wenzler E, Fraidenburg DR, Scardina T, Danziger LH. Inhaled Antibiotics for Gram-Negative Respiratory Infections. Clin Microbiol Rev 2016; 29:581-632. [PMID: 27226088 PMCID: PMC4978611 DOI: 10.1128/cmr.00101-15] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Gram-negative organisms comprise a large portion of the pathogens responsible for lower respiratory tract infections, especially those that are nosocomially acquired, and the rate of antibiotic resistance among these organisms continues to rise. Systemically administered antibiotics used to treat these infections often have poor penetration into the lung parenchyma and narrow therapeutic windows between efficacy and toxicity. The use of inhaled antibiotics allows for maximization of target site concentrations and optimization of pharmacokinetic/pharmacodynamic indices while minimizing systemic exposure and toxicity. This review is a comprehensive discussion of formulation and drug delivery aspects, in vitro and microbiological considerations, pharmacokinetics, and clinical outcomes with inhaled antibiotics as they apply to disease states other than cystic fibrosis. In reviewing the literature surrounding the use of inhaled antibiotics, we also highlight the complexities related to this route of administration and the shortcomings in the available evidence. The lack of novel anti-Gram-negative antibiotics in the developmental pipeline will encourage the innovative use of our existing agents, and the inhaled route is one that deserves to be further studied and adopted in the clinical arena.
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Affiliation(s)
- Eric Wenzler
- University of Illinois at Chicago, College of Pharmacy, Chicago, Illinois, USA
| | - Dustin R Fraidenburg
- Department of Medicine, Division of Pulmonary, Critical Care, Sleep and Allergy Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Tonya Scardina
- Loyola University Medical Center, Chicago, Illinois, USA
| | - Larry H Danziger
- University of Illinois at Chicago, College of Pharmacy, Chicago, Illinois, USA University of Illinois at Chicago, College of Medicine, Chicago, Illinois, USA
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Mikasa K, Aoki N, Aoki Y, Abe S, Iwata S, Ouchi K, Kasahara K, Kadota J, Kishida N, Kobayashi O, Sakata H, Seki M, Tsukada H, Tokue Y, Nakamura-Uchiyama F, Higa F, Maeda K, Yanagihara K, Yoshida K. JAID/JSC Guidelines for the Treatment of Respiratory Infectious Diseases: The Japanese Association for Infectious Diseases/Japanese Society of Chemotherapy - The JAID/JSC Guide to Clinical Management of Infectious Disease/Guideline-preparing Committee Respiratory Infectious Disease WG. J Infect Chemother 2016; 22:S1-S65. [PMID: 27317161 PMCID: PMC7128733 DOI: 10.1016/j.jiac.2015.12.019] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 12/14/2015] [Indexed: 12/22/2022]
Affiliation(s)
- Keiichi Mikasa
- Center for Infectious Diseases, Nara Medical University, Nara, Japan.
| | | | - Yosuke Aoki
- Department of International Medicine, Division of Infectious Diseases, Faculty of Medicine, Saga University, Saga, Japan
| | - Shuichi Abe
- Department of Infectious Diseases, Yamagata Prefectural Central Hospital, Yamagata, Japan
| | - Satoshi Iwata
- Department of Infectious Diseases, Keio University School of Medicine, Tokyo, Japan
| | - Kazunobu Ouchi
- Department of Pediatrics, Kawasaki Medical School, Okayama, Japan
| | - Kei Kasahara
- Center for Infectious Diseases, Nara Medical University, Nara, Japan
| | - Junichi Kadota
- Department of Respiratory Medicine and Infectious Diseases, Oita University Faculty of Medicine, Oita, Japan
| | | | | | - Hiroshi Sakata
- Department of Pediatrics, Asahikawa Kosei Hospital, Hokkaido, Japan
| | - Masahumi Seki
- Division of Respiratory Medicine and Infection Control, Tohoku Pharmaceutical University Hospital, Miyagi, Japan
| | - Hiroki Tsukada
- Department of Respiratory Medicine and Infectious Diseases, Niigata City General Hospital, Niigata, Japan
| | - Yutaka Tokue
- Infection Control and Prevention Center, Gunma University Hospital, Gunma, Japan
| | | | - Futoshi Higa
- Department of Respiratory Medicine, National Hospital Organization Okinawa National Hospital, Okinawa, Japan
| | - Koichi Maeda
- Center for Infectious Diseases, Nara Medical University, Nara, Japan
| | - Katsunori Yanagihara
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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Shankar J, Nguyen MH, Crespo MM, Kwak EJ, Lucas SK, McHugh KJ, Mounaud S, Alcorn JF, Pilewski JM, Shigemura N, Kolls JK, Nierman WC, Clancy CJ. Looking Beyond Respiratory Cultures: Microbiome-Cytokine Signatures of Bacterial Pneumonia and Tracheobronchitis in Lung Transplant Recipients. Am J Transplant 2016; 16:1766-78. [PMID: 26693965 DOI: 10.1111/ajt.13676] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 11/10/2015] [Accepted: 12/06/2015] [Indexed: 01/25/2023]
Abstract
Bacterial pneumonia and tracheobronchitis are diagnosed frequently following lung transplantation. The diseases share clinical signs of inflammation and are often difficult to differentiate based on culture results. Microbiome and host immune-response signatures that distinguish between pneumonia and tracheobronchitis are undefined. Using a retrospective study design, we selected 49 bronchoalveolar lavage fluid samples from 16 lung transplant recipients associated with pneumonia (n = 8), tracheobronchitis (n = 12) or colonization without respiratory infection (n = 29). We ensured an even distribution of Pseudomonas aeruginosa or Staphylococcus aureus culture-positive samples across the groups. Bayesian regression analysis identified non-culture-based signatures comprising 16S ribosomal RNA microbiome profiles, cytokine levels and clinical variables that characterized the three diagnoses. Relative to samples associated with colonization, those from pneumonia had significantly lower microbial diversity, decreased levels of several bacterial genera and prominent multifunctional cytokine responses. In contrast, tracheobronchitis was characterized by high microbial diversity and multifunctional cytokine responses that differed from those of pneumonia-colonization comparisons. The dissimilar microbiomes and cytokine responses underlying bacterial pneumonia and tracheobronchitis following lung transplantation suggest that the diseases result from different pathogenic processes. Microbiomes and cytokine responses had complementary features, suggesting that they are closely interconnected in the pathogenesis of both diseases.
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Affiliation(s)
- J Shankar
- J. Craig Venter Institute, Rockville, MD
| | - M H Nguyen
- Division of Infectious Diseases, Department of Medicine, University of Pittsburgh, Pittsburgh, PA
| | - M M Crespo
- Division of Pulmonary Allergy and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, PA
| | - E J Kwak
- Division of Infectious Diseases, Department of Medicine, University of Pittsburgh, Pittsburgh, PA
| | - S K Lucas
- J. Craig Venter Institute, Rockville, MD
| | - K J McHugh
- Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, Pittsburgh, PA
| | - S Mounaud
- J. Craig Venter Institute, Rockville, MD
| | - J F Alcorn
- Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, Pittsburgh, PA
| | - J M Pilewski
- Division of Pulmonary Allergy and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, PA
| | - N Shigemura
- Department of Cardiothoracic Surgery, University of Pittsburgh, Pittsburgh, PA
| | - J K Kolls
- Richard King Mellon Foundation Institute for Pediatric Research, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, Pittsburgh, PA
| | | | - C J Clancy
- Division of Infectious Diseases, Department of Medicine, University of Pittsburgh, Pittsburgh, PA.,VA Pittsburgh Healthcare System, Division of Infectious Diseases, Pittsburgh, PA
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Willson DF, Webster A, Heidemann S, Meert KL. Diagnosis and Treatment of Ventilator-Associated Infection: Review of the Critical Illness Stress-Induced Immune Suppression Prevention Trial Data. Pediatr Crit Care Med 2016; 17:287-93. [PMID: 26890200 PMCID: PMC5116373 DOI: 10.1097/pcc.0000000000000664] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVES The Critical Illness Stress-Induced Immune Suppression prevention trial was a randomized, masked trial of zinc, selenium, glutamine, and metoclopramide compared with whey protein in delaying nosocomial infection in PICU patients. One fourth of study subjects were diagnosed with nosocomial lower respiratory infection, which contributed to subjects receiving antibiotics 74% of all patient days in the PICU. We analyzed diagnostic and treatment variability among the participating institutions and compared outcomes between nosocomial lower respiratory infection subjects (n = 74) and intubated subjects without nosocomial infection (n = 1 55). DESIGN Post hoc analysis. SETTING Eight hospitals in the Collaborative Pediatric Critical Care Research Network. PATIENTS Critical Illness Stress-Induced Immune Suppression study subjects. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS Variability across institutions existed in the frequency and manner by which respiratory secretion cultures were obtained, processed, and results reported. Most results were reported semiquantitatively, and both Gram stains and antibiotic sensitivities were frequently omitted. The nosocomial lower respiratory infection diagnosis was associated with increased PICU lengths of stay compared with those who were intubated without nosocomial infection (24 ± 19 vs 9 ± 6 d; p < 0.001) and antibiotic use (38 ± 29 vs 15 ± 20 antibiotics days; p < 0.001). Despite antibiotic treatment, the same bacteria persisted in 45% of follow-up cultures. CONCLUSIONS The Critical Illness Stress-Induced Immune Suppression data demonstrate that the nosocomial lower respiratory infection diagnosis is associated with longer lengths of stay and increased antibiotic use, but there is considerable diagnostic and treatment variability across institutions. More rigorous standards for when and how respiratory cultures are obtained, processed, and reported are necessary. Bacterial persistence also complicates the interpretation of follow-up cultures.
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Affiliation(s)
- Douglas F Willson
- 1Children's Hospital of Richmond at Virginia Commonwealth University, Richmond, VA. 2University of Utah, Salt Lake City, UT. 3Children's Hospital of Michigan, Detroit, MI
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Lei Y, Hudcova J, Rashid J, Sarwar A, Gillespie W, Finn C, Goggin M, Omran MB, Boroda E, Craven DE. Natural History, Outcomes and Antibiotic Treatment for Ventilator-Associated Tracheobronchitis in Critical Ill Patients. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/mri.2016.51001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Beardsley AL, Nitu ME, Cox EG, Benneyworth BD. An Evaluation of Various Ventilator-Associated Infection Criteria in a PICU. Pediatr Crit Care Med 2016; 17:73-80. [PMID: 26495884 DOI: 10.1097/pcc.0000000000000569] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To describe characteristics and overlap associated with various ventilator-associated infection criteria in the PICU. DESIGN Retrospective observational study. SETTING A quaternary care children's hospital PICU. PATIENTS Children ventilated more than 48 hours, excluding patients with tracheostomy. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS Ventilator-associated infection, including pneumonia, infection-related ventilator-associated condition, tracheobronchitis, and lower respiratory tract infection were defined according to criteria from the Centers for Disease Control and Prevention or medical literature. Clinical data were abstracted to assign diagnoses of each ventilator-associated infection. In 300 episodes of mechanical ventilation, there were 30 individual episodes of ventilator-associated infection. Nine episodes met more than one definition. Rates per 1,000 ventilator days were 2.60 for ventilator-associated pneumonia, 2.16 for infection-related ventilator-associated condition, 5.19 for ventilator-associated tracheobronchitis, and 6.92 for lower respiratory tract infection. The rate of any ventilator-associated infection was 12.98 per 1,000 ventilator days. Individual criteria had similar risk factors and outcomes. Risk factors for development of any ventilator-associated infection included older age (p = 0.003) and trauma (p = 0.007), while less cardiac surgery patients developed ventilator-associated infection (p = 0.015). On multivariate analysis, trauma was the only independent risk factor (adjusted odds ratio, 3.10; 95% CI, 1.15-8.38). Developing any ventilator-associated infection was associated with longer duration of mechanical ventilation (p < 0.001) and longer PICU length of stay (p < 0.001) but not PICU mortality (p = 0.523). CONCLUSIONS There is little overlap in diagnosis of various ventilator-associated infection. However, the risk factors and outcomes associated with individual criteria are similar, indicating that they may have validity in identifying true pathology. Ventilator-associated infection in general is likely a larger problem than indicated by low hospital-reported rates of ventilator-associated pneumonia. There is clinical confusion due to the presence of several diagnostic criteria for ventilator-associated infection. Developing a more inclusive and clinically relevant criterion for diagnosing ventilator-associated infection is warranted to accurately assess their impact and improve guidance for clinicians in evaluating and treating ventilator-associated infection.
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Affiliation(s)
- Andrew L Beardsley
- 1Section of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN. 2Section of Pediatric Infectious Disease, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN. 3Children's Health Services Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN
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Palmer LB. Ventilator-associated tracheobronchitis and pneumonia. THE LANCET RESPIRATORY MEDICINE 2015; 3:826-7. [PMID: 26472038 DOI: 10.1016/s2213-2600(15)00361-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 09/02/2015] [Indexed: 01/23/2023]
Affiliation(s)
- Lucy B Palmer
- Division of Pulmonary Critical Care, SUNY at Stony Brook University, New York, NY 11794-8172, USA.
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Karvouniaris M, Makris D, Zygoulis P, Triantaris A, Xitsas S, Mantzarlis K, Petinaki E, Zakynthinos E. Nebulised colistin for ventilator-associated pneumonia prevention. Eur Respir J 2015; 46:1732-9. [DOI: 10.1183/13993003.02235-2014] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Accepted: 07/07/2015] [Indexed: 11/05/2022]
Abstract
We evaluated whether prophylactic nebulised colistin could reduce ventilator-associated pneumonia (VAP) rates in an intensive care unit (ICU) setting with prevalent multidrug-resistant (MDR) bacteria.We used a single-centre, two-arm, randomised, open-label, controlled trial in a 12-bed ICU in the University Hospital of Larissa, Greece. Patient inclusion criteria included mechanical ventilation of >48 h. The two arms consisted of prophylaxis with 500 000 U colistin (Col group) or normal saline (NS group), thrice daily, for the first 10 ICU days or until extubation. The primary outcome of the study was the 30-day VAP incidence.In total, 168 patients entered the study. VAP incidence was not different between Col and NS group patients (14 (16.7%)versus25 (29.8%), respectively, p=0.07). Regarding the secondary outcomes, the intervention resulted in a lower VAP incidence density rate (11.4versus25.6, respectively, p<0.01), and less Gram-negative bacteria-VAP (p=0.03) and MDR-VAP (p=0.04). Among VAP patients (n=39), prophylaxis with inhaled colistin improved ICU survival (p=0.016). There was no evidence of increased resistance to colistin or multidrug resistance.Our findings suggest that nebulised colistin had no significant effect on VAP incidence.
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Abstract
PURPOSE OF REVIEW Despite multiple protocols for the prevention of ventilator-associated pneumonia (VAP), respiratory infections have not been eliminated in the ICU. The profound disruption in both airway integrity and mucociliary clearance caused by the endotracheal tube makes it unlikely there will ever be a zero rate of respiratory infection in critically ill ventilated patients or a 100% cure rate when infection is present. In fact, options for treatment are diminishing as bacteria resistant to most, or in some hospitals all, systemic antibiotics increase in prevalence from our liberal use of systemic antibiotics. Inhaled therapy with proper delivery will result in the high concentrations of antibiotics needed in the treatment of increasingly resistant organisms. RECENT FINDINGS Data from many recent investigations have focused on inhaled antibiotics as: adjunctive therapy to systemic antibiotic for VAP, monotherapy for VAP, and as monotherapy for ventilator-associated tracheobronchitis. The clinical outcomes of these studies will be reviewed as well as their effect on multidrug-resistant organisms. SUMMARY The present review will focus on the rationale for inhaled therapy, the current studies examining the delivery and clinical efficacy of inhaled antibiotics, and the potential role for this mode of delivery actually decreasing antibiotic resistance in the respiratory tract.
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Antibiotic therapy for ventilator-associated tracheobronchitis: a standard of care to reduce pneumonia, morbidity and costs? Curr Opin Pulm Med 2015; 21:250-9. [PMID: 25784245 DOI: 10.1097/mcp.0000000000000158] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
PURPOSE OF REVIEW The present review draws our attention to ventilator-associated tracheobronchitis (VAT) as a distinct clinical entity that has been associated with progression to ventilator-associated pneumonia (VAP) and worse patient outcomes. In contrast to VAP, which has been extensively investigated for over the past 30 years, most VAT studies have been conducted in the past decade. There are ample data which demonstrate that VAT may progress to VAP, have more ventilator days, and have longer ICU stay that may translate into higher healthcare costs. RECENT FINDINGS The article focuses on the diagnostic criteria for VAT, causative agents, and studies analyzing associations between VAT and patient outcomes in relation to early, appropriate intravenous, and/or aerosolized antibiotic therapy. Aerosolized antibiotic treatment delivered by improved device technology is a novel approach that has proved to be effective for the treatment and eradication of multidrug-resistant bacterial pathogens. Aerosolized antibiotics are effective in decreasing the use of systemic antibiotics, reducing bacterial resistance, and may also facilitate clinical resolution of infection. SUMMARY Evidence presented in this review supports treatment of VAT with early and appropriate antibiotic therapy as a standard of care to reduce VAP, ventilator days, and duration of ICU stay in high-risk patient population.
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