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Agarwal A, Jayashree M, Angrup A, Biswal M, Sudeep KC, Prasad S, Bansal A, Nallasamy K, Angurana SK. Serial active surveillance cultures of children admitted to a medical pediatric intensive care unit of a tertiary care teaching hospital: A prospective observational study. Indian J Med Microbiol 2024; 47:100529. [PMID: 38237735 DOI: 10.1016/j.ijmmb.2024.100529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 12/20/2023] [Accepted: 01/14/2024] [Indexed: 02/01/2024]
Affiliation(s)
- Ashish Agarwal
- Division of Pediatric Emergency and Intensive Care, Department of Pediatrics, Advanced Pediatrics Centre (APC), Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India.
| | - Muralidharan Jayashree
- Division of Pediatric Emergency and Intensive Care, Department of Pediatrics, Advanced Pediatrics Centre (APC), Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India.
| | - Archana Angrup
- Department of Medical Microbiology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India.
| | - Manisha Biswal
- Department of Medical Microbiology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India.
| | - K C Sudeep
- Division of Pediatric Emergency and Intensive Care, Department of Pediatrics, Advanced Pediatrics Centre (APC), Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India.
| | - Shankar Prasad
- Division of Pediatric Emergency and Intensive Care, Department of Pediatrics, Advanced Pediatrics Centre (APC), Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India.
| | - Arun Bansal
- Division of Pediatric Emergency and Intensive Care, Department of Pediatrics, Advanced Pediatrics Centre (APC), Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India.
| | - Karthi Nallasamy
- Division of Pediatric Emergency and Intensive Care, Department of Pediatrics, Advanced Pediatrics Centre (APC), Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India.
| | - Suresh Kumar Angurana
- Division of Pediatric Emergency and Intensive Care, Department of Pediatrics, Advanced Pediatrics Centre (APC), Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India.
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Evaluation of Bi-Lateral Co-Infections and Antibiotic Resistance Rates among COVID-19 Patients in Lahore, Pakistan. Medicina (B Aires) 2022; 58:medicina58070904. [PMID: 35888623 PMCID: PMC9322062 DOI: 10.3390/medicina58070904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/01/2022] [Accepted: 07/04/2022] [Indexed: 11/17/2022] Open
Abstract
Background and Objective: Bacterial infections are among the major complications of many viral respiratory tract illnesses, such as influenza and coronavirus disease-2019 (COVID-19). These bacterial co-infections are associated with an increase in morbidity and mortality rates. The current observational study was conducted at a tertiary care hospital in Lahore, Pakistan among COVID-19 patients with the status of oxygen dependency to see the prevalence of bacterial co-infections and their antibiotic susceptibility patterns. Materials and Methods: A total of 1251 clinical samples were collected from already diagnosed COVID-19 patients and tested for bacterial identification (cultures) and susceptibility testing (disk diffusion and minimum inhibitory concentration) using gold standard diagnostic methods. Results: From the total collected samples, 234 were found positive for different bacterial isolates. The most common isolated bacteria were Escherichia coli (E. coli) (n = 62) and Acinetobacter baumannii (A. baumannii) (n = 47). The E. coli isolates have shown the highest resistance to amoxicillin and ampicillin, while in the case of A. baumannii, the highest resistance was noted against tetracycline. The prevalence of methicillin resistant Staphylococcus aureus (MRSA) was 14.9%, carbapenem resistant Enterobacteriaceae (CRE) was 4.5%, and vancomycin resistant Enterococcus (VRE) was 3.96%. Conclusions: The results of the current study conclude that empiric antimicrobial treatment in critically ill COVID-19 patients may be considered if properly managed within institutional or national level antibiotic stewardship programs, because it may play a protective role in the case of bacterial co-infections, especially when a patient has other AMR risk factors, such as hospital admission within the previous six months.
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Brink AJ, Centner CM, Opperman S. Microbiology Assessments in Critically Ill Patients. Semin Respir Crit Care Med 2022; 43:75-96. [PMID: 35172360 DOI: 10.1055/s-0041-1741018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The prevalence of suspected or proven infections in critically ill patients is high, with a substantial attributable risk to in-hospital mortality. Coordinated guidance and interventions to improve the appropriate microbiological assessment for diagnostic and therapeutic decisions are therefore pivotal. Conventional microbiology follows the paradigm of "best practice" of specimen selection and collection, governed by laboratory processing and standard operating procedures, and informed by the latest developments and trends. In this regard, the preanalytical phase of a microbiological diagnosis is crucial since inadequate sampling may result in the incorrect diagnosis and inappropriate management. In addition, the isolation and detection of contaminants interfere with multiple intensive care unit (ICU) processes, which confound the therapeutic approach to critically ill patients. To facilitate bedside enablement, the microbiology laboratory should provide expedited feedback, reporting, and interpretation of results. Compared with conventional microbiology, novel rapid and panel-based diagnostic strategies have the clear advantages of a rapid turnaround time, the detection of many microorganisms including antimicrobial resistant determinants and thus promise substantial improvements in health care. However, robust data on the clinical evaluation of rapid diagnostic tests in presumed sepsis, sepsis and shock are extremely limited and more rigorous intervention studies, focusing on direct benefits for critically ill patients, are pivotal before widespread adoption of their use through the continuum of ICU stay. Advocating the use of these diagnostics without firmly establishing which patients would benefit most, how to interpret the results, and how to treat according to the results obtained, could in fact be counterproductive with regards to diagnostic "best practice" and antimicrobial stewardship. Thus, for the present, they may supplement but not yet supplant conventional microbiological assessments.
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Affiliation(s)
- Adrian John Brink
- Division of Medical Microbiology, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.,National Health Laboratory Service, Groote Schuur Hospital, Cape Town, South Africa
| | - Chad M Centner
- Division of Medical Microbiology, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.,National Health Laboratory Service, Groote Schuur Hospital, Cape Town, South Africa
| | - Stefan Opperman
- Division of Medical Microbiology, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.,National Health Laboratory Service, Green Point, Cape Town, South Africa
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Mirza S, Bhaumik S, Das N, Gandham N, Rabindra NM, Gupta N, Mukhida S, Kannuri S. Microbiological profile and antibiotic susceptibility pattern of gram-negative isolates from tracheal secretions in a tertiary care setup. MEDICAL JOURNAL OF DR. D.Y. PATIL VIDYAPEETH 2022. [DOI: 10.4103/mjdrdypu.mjdrdypu_679_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Prinzi A, Parker SK, Thurm C, Birkholz M, Sick-Samuels A. Association of Endotracheal Aspirate Culture Variability and Antibiotic Use in Mechanically Ventilated Pediatric Patients. JAMA Netw Open 2021; 4:e2140378. [PMID: 34935920 PMCID: PMC8696566 DOI: 10.1001/jamanetworkopen.2021.40378] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
IMPORTANCE Endotracheal aspirate cultures are commonly collected from patients with mechanical ventilation to evaluate for ventilator-associated pneumonia or tracheitis. However, the respiratory tract is not sterile, making differentiating between colonization from bacterial infection challenging, and results may be unreliable owing to variable specimen quality and sample processing across laboratories. Despite these limitations, clinicians routinely interpret bacterial growth in endotracheal aspirate cultures as evidence of infection, sometimes regardless of organism significance, prompting antibiotic treatment. OBJECTIVE To assess the variability in endotracheal aspirate culture rates and the association between culture rates and antibiotic prescribing among patients with mechanical ventilation across children's hospitals in the US. DESIGN, SETTING, AND PARTICIPANTS Cross-sectional retrospective analysis of data obtained from the Children's Hospital Association Pediatric Health Information System database between January 1, 2016, through December 31, 2019. Participants were all patients hospitalized with mechanical ventilation aged less than 18 years. EXPOSURES A charge for an endotracheal aspirate culture on a ventilated day. MAIN OUTCOMES AND MEASURES Endotracheal aspirate culture rate and antibiotic days of therapy per ventilated days. For mechanical ventilation, clinical transaction classification codes for mechanical ventilation other unspecified ventilator assistance were used. To identify respiratory cultures, the laboratory test code for aerobic culture was used and relevant keywords (ie, respiratory tract, sputum) were used to identify sources in the hospital charge description master. RESULTS A total of 152 132 patients were identified among 31 hospitals. Among these patients, 79 691 endotracheal aspirate cultures were collected on a ventilator-day (patients aged less than 1 year, 44%; 1-4 years, 27%, 5-11 years. 16%, and 12-18 years, 13%; 3% were Asian; 17% Hispanic; 21% non-Hispanic Black; 45% Non-Hispanic White patients; 14% were other; 56% of patients were male, 44% were female). The overall median rate of culture use was 46 per 1000 ventilator-days (IQR, 32-73 cultures per 1000 ventilator-days). The endotracheal aspirate culture rate was positively correlated with the hospital's antibiotic days of therapy rate (R = 0.46; P = .009). In a multivariable model adjusting for patient-level and hospital-level characteristics and among patients with mechanical ventilation, each additional endotracheal aspirate culture was associated with 2.87 (95% CI, 2.74-3.01) higher odds of receiving additional days of therapy compared with patients who did not receive and endotracheal aspirate culture. CONCLUSIONS AND RELEVANCE In this study, notable variability was found in endotracheal aspirate culture rates across US pediatric hospitals and pediatric intensive care units, and endotracheal aspirate culture use was associated with increased antibiotic use. These findings suggest an opportunity for diagnostic and antibiotic stewardship to standardize testing and treatment of suspected ventilator-associated infections in pediatric patients with mechanical ventilation pediatric patients.
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Affiliation(s)
- Andrea Prinzi
- Department of Infectious Diseases, Children’s Hospital Colorado, Denver
- University of Colorado Anschutz Medical Campus Graduate School, Denver
| | - Sarah K. Parker
- Department of Infectious Diseases, Children’s Hospital Colorado, Denver
- Department of Pediatrics, University of Colorado School of Medicine, Denver
| | - Cary Thurm
- Children’s Hospital Association, Lenexa, Kansas
| | - Meghan Birkholz
- Department of Infectious Diseases, Children’s Hospital Colorado, Denver
| | - Anna Sick-Samuels
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
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Kang JY, Kang HS, Heo JW, Kim YH, Kim SJ, Lee SH, Kwon SS, Kim YJ. Clinical significance of microbial colonization identified by initial bronchoscopy in patients with lung cancer requiring chemotherapy. J Thorac Dis 2021; 13:1306-1314. [PMID: 33841924 PMCID: PMC8024789 DOI: 10.21037/jtd-20-2722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background There are limited data on the association between bronchial colonization and respiratory infections in people with lung cancer requiring cytotoxic chemotherapy. We investigated whether bronchial colonization in initial bronchoscopy specimens can predict the development of pneumonia after chemotherapy in patients with lung cancer. Methods Four hundred thirteen patients with lung cancer included in the Catholic Medical Center lung cancer registry were enrolled from March 2015 to August 2018. Demographic data, microbiology results, development of pneumonia after chemotherapy, and clinical information about lung cancer were analyzed retrospectively. Results A total of 206 lung cancer patients treated with chemotherapy were included in the analysis. Forty patients (19.4%) had positive results for the bronchial washing culture during the initial evaluation of lung cancer. The most common organisms were Klebsiella pneumoniae (n=14) and Streptococcus pneumoniae (n=6) in the surveillance culture, and Pneumocystis jirovecii (n=12) and Staphylococcus aureus (n=8) at the time of pneumonia development. Eighty-nine patients (43.2%) had pneumonia after chemotherapy, but the occurrence of pneumonia did not differ according to the colonization. There were no patients for whom the initial isolated organism was a causative microbe for the development of pneumonia after or during chemotherapy. The pneumonia group had poorer prognosis than the non-pneumonia group (378 vs. 705 days, P=0.0004). Conclusions Microbial colonization in bronchoscopy specimens was not associated with pneumonia development or mortality after chemotherapy for lung cancer. This finding suggests that testing surveillance culture may not be helpful for predicting pneumonia or improving survival in lung cancer patients with chemotherapy.
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Affiliation(s)
- Ji Young Kang
- Division of Pulmonary, Critical Care and Allergy, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hye Seon Kang
- Division of Pulmonary, Critical Care and Allergy, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jung Won Heo
- Division of Pulmonary, Critical Care and Allergy, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Yong Hyun Kim
- Division of Pulmonary, Critical Care and Allergy, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Seung Joon Kim
- Division of Pulmonary, Critical Care and Allergy, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Postech-Catholic Biomedical Engineering Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sang Haak Lee
- Division of Pulmonary, Critical Care and Allergy, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Soon Seog Kwon
- Division of Pulmonary, Critical Care and Allergy, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Youn Jeong Kim
- Division of Infectious Disease, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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Infections with Carbapenem-Resistant Gram-Negative Bacteria are a Serious Problem Among Critically Ill Children: A Single-Centre Retrospective Study. Pathogens 2019; 8:pathogens8020069. [PMID: 31117259 PMCID: PMC6630812 DOI: 10.3390/pathogens8020069] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 05/16/2019] [Accepted: 05/20/2019] [Indexed: 01/27/2023] Open
Abstract
Children in paediatric intensive care units (PICUs) are vulnerable to infections because invasive devices are frequently used during their admission. We aimed to determine the prevalence, associated factors, and prognosis of infections in our PICU. This retrospective study evaluated culture results from 477 paediatric patients who were treated in the PICU between January 2014 and March 2019. Ninety patients (18.9%) had bacterial infections, with gram-negative bacteria being the predominant infectious agents. Culture-positive patients were younger than culture-negative patients, and age was related to mortality and various clinical factors. Culture-positive bacterial infections in the PICU were associated with increased use of invasive mechanical ventilation (odds ratio(OR); 2.254), red blood cell (RBC) transfusions (OR:2.624), and inotropic drugs (OR:2.262). Carbapenem resistance was found in approximately one-third of gram-negative bacteria, and was most common in tracheal aspirate specimens and cases involving Klebsiella spp. Total parenteral nutrition was a significant risk factor (OR:5.870). Positive blood culture results were associated with poorer patient survival than other culture results. These findings indicate that infections, especially those involving carbapenem-resistant bacteria, are an important issue when treating critically ill children.
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