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Baran Aİ, Huyut Z, Öncü MR, Akbay Hİ, Akmeşe Ş, Karsen H, Alp HH, Hakseven Karaduman Z, Tarcan T. Evaluation of cerebrospinal fluid levels for ALOX5, S100B, DEFA1, and GFAP in infectious meningitis. Medicine (Baltimore) 2023; 102:e36463. [PMID: 38115295 PMCID: PMC10727538 DOI: 10.1097/md.0000000000036463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/02/2023] [Accepted: 11/13/2023] [Indexed: 12/21/2023] Open
Abstract
BACKGROUND The aim of this study was to determine how the levels of peptide and protein-based biomarkers in cerebrospinal fluid change in bacterial, tuberculous, and aseptic meningitis, and to determine the success of these agents in distinguishing between different types of infectious meningitis. METHODS The levels of arachidonate-5-lipoxygenase, S100 calcium-binding protein B, defensin-α 1, and glial fibrillary acidic protein in cerebrospinal fluid samples from 20 tuberculosis, 40 bacterial, 25 aseptic meningitis patients, and 55 control groups were measured and compared using an enzyme-linked immunosorbent assay. RESULTS The mean age of the patients was 37.9 ± 14.4 years. The parameter that contributed the most to the differential diagnosis of the infectious meningitis groups was S100 calcium-binding protein B. The S100 calcium-binding protein B levels were significantly higher in the tuberculous meningitis group than in the other groups, and arachidonate-5-lipoxygenase levels were significantly higher in the tuberculous meningitis and bacterial meningitis groups (P < .05). CONCLUSION This study showed that cerebrospinal fluid arachidonate-5-lipoxygenase, and S100 calcium-binding protein B levels may differ in bacterial, aseptic, and tuberculous meningitis, and the results obtained may be quite effective as important potential biomarkers in the differential diagnosis of different types of meningitis.
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Affiliation(s)
- Ali İrfan Baran
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Van Yuzuncu Yil University, Van, Turkey
| | - Zübeyir Huyut
- Department of Biochemistry, Faculty of Medicine, Van Yuzuncu Yil University, Van, Turkey
| | - Mehmet Reşit Öncü
- Department of Emergency Medicine, Faculty of Medicine, Van Yuzuncu Yil University, Van, Turkey
| | - Halil İbrahim Akbay
- Department of Biochemistry, Faculty of Medicine, Van Yuzuncu Yil University, Van, Turkey
| | - Şükrü Akmeşe
- Departmant of Pharmacy Services Program, Vocational School of Health, Harran University, Sanliurfa, Turkey
| | - Hasan Karsen
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Harran University, Sanliurfa, Turkey
| | - Hamit Hakan Alp
- Department of Biochemistry, Faculty of Medicine, Van Yuzuncu Yil University, Van, Turkey
| | - Zekiye Hakseven Karaduman
- Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Van Yuzuncu Yil University, Van, Turkey
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Kar M, Jamwal A, Dubey A, Sahu C, Patel SS, Fatima N. Clinical presentations and microbiological analysis of cerebrospinal fluid samples in cases of suspected bacterial meningitis patients attending a 1600 bedded teaching hospital from 2019 to 2022: A retrospective study. J Family Med Prim Care 2023; 12:1893-1900. [PMID: 38024911 PMCID: PMC10657087 DOI: 10.4103/jfmpc.jfmpc_2330_22] [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: 11/29/2022] [Revised: 03/31/2023] [Accepted: 04/27/2023] [Indexed: 12/01/2023] Open
Abstract
Background Meningitis can be attributed to bacterial, fungal, or viral agents. In this study, we demonstrate the common bacterial agents causing meningitis along with their antibiotics susceptibility pattern in patients of all age groups. Material and Methods This retrospective, observational study was carried out in the Department of Microbiology with cerebrospinal fluid (CSF) samples collected from November 2019 to May 2022. We collected 1986 nonrepeat CSF samples from clinically suspected patients of bacterial meningitis, and clinical information about the patients was extracted from the hospital information system. Results Out of the 1986 CSF samples included in our study, 150 (7.55%) were found to be positive on bacterial culture. Most of our patients were in the age group of 0-20 years. Common clinical manifestations observed in our patients were: high-grade fever, 87 patients (58%); severe headache, 126 patients (84%); neck rigidity, 47 patients (31.3%); altered mental status, 76 patients (50.7%) and photophobia, 83 patients (55.3%). The most commonly isolated bacteria was Acinetobacter species (30%). The mean length of hospitalization (37.76 ± 25.30), the mean total cell count, high levels of protein (mg/dl) and low levels of glucose (mg/dl) of CSF were statistically significant in meningitis caused by multidrug-resistant bacteria. Conclusion We recognized the spectrum of pathogens causing meningitis at our center along with the antibiotic resistance pattern to guide and facilitate early treatment by primary health care professionals and family medicine practitioners.
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Affiliation(s)
- Mitra Kar
- Department of Microbiology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Ashima Jamwal
- Department of Microbiology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Akanksha Dubey
- Department of Microbiology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Chinmoy Sahu
- Department of Microbiology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Sangram Singh Patel
- Department of Microbiology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
| | - Nida Fatima
- Department of Microbiology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India
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Go K, Ge J, Abdelattif M, Zaw M. Recurrent Meningitis in the Context of an Encephalocele. Cureus 2022; 14:e29594. [DOI: 10.7759/cureus.29594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/25/2022] [Indexed: 11/05/2022] Open
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Mrozowska-Nyckowska K, Zbrzeźniak J, Paradowska-Stankiewicz I. Meningitis and encephalitis in Poland in 2020. PRZEGLAD EPIDEMIOLOGICZNY 2022; 76:371-384. [PMID: 36524880 DOI: 10.32394/pe.76.35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
INTRODUCTION Meningitis and/or encephalitis are one of the main infectious diseases of the nervous system. These diseases are most commonly caused by bacterial and viral etiological factors. In this publication, meningitis and/or encephalitis caused by Neisseria meningitidis, Streptococcus pneumoniae, Haemophilus influenzae and those with a viral origin - in Poland, most often caused by tick-borne encephalitis virus - are presented in detail. In addition to epidemiological surveillance, immunoprophylaxis in the form of mandatory and recommended vaccinations is used in Poland to prevent these infections. AIM OF THE STUDY The aim of this study was to to assess the epidemiological situation of meningitis and encephalitis in Poland, in 2020. MATERIAL AND METHODS To analyse the epidemiological situation of neuroinfections in Poland were used data sent to NIPH NIH - NRI by Voivodeship Sanitary and Epidemiological Stations and published in the annual bulletins: "Infectious diseases and poisonings in Poland in 2020" and "Protective vaccination in Poland in 2020" and individual epidemiological interviews registered in the EpiBaza system. RESULTS In 2020, a total of 831 cases of meningitis and/or encephalitis were registered in Poland. This is a decrease in incidence of up to 62.9% compared to 2019. For infections of bacterial etiology, including cases of neuroborreliosis (incidence of 2.40 per 100,000), the number of cases decreased by 60.4% (from 931 to 369). In the viral infection group, there was a 64.9% decrease (from 1,318 to 462 cases). Of all registered cases, 56% were infections with a viral etiology. Compared to 2019, the number of cases with an S. pneumoniae etiology decreased by 61.3% and for N. meningitidis by 41.1%. It is interesting to note that, in the case of H. influenzae, we can speak of a 20% increase in cases compared to the previous year. In addition, we can see a decrease in the incidence of tick-borne encephalitis - from 265 in 2019 to 158 in 2020 (a decrease of 40.4%). SUMMARY AND CONCLUSIONS Overall, a downward trend in incidence was shown for both bacterial and viral meningitis and/or encephalitis. The SARS-CoV-2 pandemic and the introduction of restrictions on personto-person contact and various forms of activity, resulting in a reduction in pathogen transmission, were key to the significant reduction in the number of meningitis and/or encephalitis cases in 2020, but a reduction in the availability of medical facilities or the completeness of case reports due to the burden of anti-epidemic measures on the Sanitary Inspectorate cannot be excluded either. Only in the case of cases caused by H. influenzae was a slight increase observed compared to the previous year (12 versus 10 cases). Meningoencephalitis and/or encephalitis, due to its wide etiological range, poses a major challenge to the health care system, particularly in terms of correct clinical diagnosis.
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Affiliation(s)
- Karolina Mrozowska-Nyckowska
- National Institute of Public Health NIH - National Research Institute, Department of Epidemiology of Infectious Diseases and Surveillance
| | - Jakub Zbrzeźniak
- National Institute of Public Health NIH - National Research Institute, Department of Epidemiology of Infectious Diseases and Surveillance
| | - Iwona Paradowska-Stankiewicz
- National Institute of Public Health NIH - National Research Institute, Department of Epidemiology of Infectious Diseases and Surveillance
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Hemmati N, Nikkhahi F, Javadi A, Eskandarion S, Marashi SMA. Use of a new multiplex quantitative polymerase chain reaction based assay for simultaneous detection of Neisseria meningitidis, Escherichia coli K1 , Streptococcus agalactiae, and Streptococcus pneumoniae. IRANIAN JOURNAL OF MICROBIOLOGY 2021; 13:464-469. [PMID: 34557274 PMCID: PMC8421586 DOI: 10.18502/ijm.v13i4.6970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Background and Objectives Neisseria meningitidis, Escherichia coli K1, Streptococcus agalactiae, and Streptococcus pneumoniae cause 90% of bacterial meningitis. Almost all infected people die or have irreversible neurological complications. Therefore, it is essential to have a diagnostic kit with the ability to quickly detect these fatal infections. Materials and Methods The project involved 212 patients from whom cerebrospinal fluid samples were obtained. After total genome extraction and performing multiplex quantitative polymerase chain reaction (qPCR), the presence or absence of each infectious factor was determined by comparing with standard strains. Results The specificity, sensitivity, positive predictive value, and negative predictive value calculated were 100%, 92.9%, 50%, and 100%, respectively. So, due to the high specificity and sensitivity of the designed primers, they can be used instead of bacterial culture that takes at least 24 to 48 hours. Conclusion The remarkable benefit of this method is associated with the speed (up to 3 hours) at which the procedure could be completed. It is also worth noting that this method can reduce the personnel unintentional errors which may occur in the laboratory. On the other hand, as this method simultaneously identifies four common factors that cause bacterial meningitis, it could be used as an auxiliary method diagnostic technique in laboratories particularly in cases of emergency medicine.
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Affiliation(s)
- Nastaran Hemmati
- Student Research Committee, School of Medicine, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Farhad Nikkhahi
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Amir Javadi
- Department of Community Medicine, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Sahar Eskandarion
- Department of Pediatric Medicine, Imam Hossein Hospital, Iran University of Medical Sciences, Tehran, Iran
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Alnomasy SF, Alotaibi BS, Mujamammi AH, Hassan EA, Ali ME. Microbial aspects and potential markers for differentiation between bacterial and viral meningitis among adult patients. PLoS One 2021; 16:e0251518. [PMID: 34115780 PMCID: PMC8195399 DOI: 10.1371/journal.pone.0251518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Accepted: 04/28/2021] [Indexed: 01/04/2023] Open
Abstract
OBJECTIVES Meningitis is a medical emergency with permanent disabilities and high mortality worldwide. We aimed to determine causative microorganisms and potential markers for differentiation between bacterial and viral meningitis. METHODOLOGY Adult patients with acute meningitis were subjected to lumber puncture. Cerebrospinal fluid (CSF) microorganisms were identified using Real-time PCR. PCT and CRP levels, peripheral and CSF-leucocyte count, CSF-protein and CSF-glucose levels were assessed. RESULTS Out of 80 patients, infectious meningitis was confirmed in 75 cases; 38 cases were bacterial meningitis, 34 cases were viral meningitis and three cases were mixed infection. Higher PCT, peripheral and CSF-leukocytosis, higher CSF-protein and lower CSF-glucose levels were more significant in bacterial than viral meningitis patients. Neisseria meningitides was the most frequent bacteria and varicella-zoster virus was the most common virus. Using ROC analyses, serum PCT and CSF-parameters can discriminate bacterial from viral meningitis. Combined ROC analyses of PCT and CSF-protein significantly improved the effectiveness in predicting bacterial meningitis (AUC of 0.998, 100%sensitivity and 97.1%specificity) than each parameter alone (AUC of 0.951 for PCT and 0.996 for CSF-protein). CONCLUSION CSF-protein and serum PCT are considered as potential markers for differentiating bacterial from viral meningitis and their combination improved their predictive accuracy to bacterial meningitis.
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Affiliation(s)
- Sultan F. Alnomasy
- Department of Medical Laboratories Sciences, College of Applied Medical Sciences in Al- Quwayiyah, Shaqra University, Al- Quwayiyah, Riyadh, Saudi Arabia
| | - Bader S. Alotaibi
- Department of Medical Laboratories Sciences, College of Applied Medical Sciences in Al- Quwayiyah, Shaqra University, Al- Quwayiyah, Riyadh, Saudi Arabia
| | - Ahmed H. Mujamammi
- Department of Pathology, Clinical Biochemistry Unit, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Elham A. Hassan
- Department of Gastroenterology and Tropical Medicine, Faculty of Medicine Assiut University, Assiut, Egypt
| | - Mohamed E. Ali
- Department of Microbiology and Immunology, Faculty of Pharmacy, Al-Azhar University, Assiut, Egypt
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Lee SJ, Cohen J, Chan J, Walgama E, Wu A, Mamelak AN. Infectious Complications of Expanded Endoscopic Transsphenoidal Surgery: A Retrospective Cohort Analysis of 100 Cases. J Neurol Surg B Skull Base 2019; 81:497-504. [PMID: 33134016 DOI: 10.1055/s-0039-1696999] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 08/08/2019] [Indexed: 12/14/2022] Open
Abstract
Objective To identify perioperative factors that may predict postoperative cerebrospinal fluid (CSF) leak and meningitis following expanded endoscopic transsphenoidal surgery (EETS). Study Design This is a retrospective study. This study was set at the Cedars-Sinai Medical Center, Los Angeles. A total of 78 patients who underwent EETS between January 2007 and November 2018 were participated. The main outcome measures were CSF leak and meningitis. Results A total of 78 patients underwent a total of 100 EETS procedures; 17.9 and 10.3% of patients developed postoperative CSF leaks and meningitis, respectively. Out of eight, three patients with meningitis did not develop an observable CSF leak. The risk of developing meningitis in patients with a CSF leak was significantly higher than those without a leak, with an odds ratio (OR) of 11.48 (95% confidence interval, 2.33-56.47; p = 0.004). Pituicytomas were significantly associated with meningitis compared with other pathologies. No other patient-specific factors were identified as risks for leak or meningitis, including method of skull base repair, sex, tumor volume, or body mass index, although there was a strong trend toward reduced CSF leak rates in patient with nasoseptal flaps used for skull base repair, compared with those without (9.5 vs. 25%). CSF protein was consistently elevated on the first CSF values obtained when meningitis was suspected. Conclusion CSF leak and meningitis are common complications of expanded endonasal surgery No statistically significant risk factors for developing a postoperative leak other than the pathology of pituicytoma were identified, including method of skull base repair, although the use of a vascularized nasoseptal flap did trend toward a reduced CSF leak rate. CSF protein is the most sensitive marker for the presumptive diagnosis and timely treatment of meningitis.
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Affiliation(s)
- Seung J Lee
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, California, United States
| | - Justin Cohen
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, California, United States
| | - Julie Chan
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, California, United States
| | - Evan Walgama
- Department of Otolaryngology, Cedars-Sinai Medical Center, Los Angeles, California, United States
| | - Arthur Wu
- Department of Otolaryngology, Cedars-Sinai Medical Center, Los Angeles, California, United States
| | - Adam N Mamelak
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, California, United States
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Payne FL, Fernandez DN, Jenner L, Paul SP. Recognition and nursing management of abusive head trauma in children. ACTA ACUST UNITED AC 2019; 26:974-981. [PMID: 28956988 DOI: 10.12968/bjon.2017.26.17.974] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Abusive head trauma (AHT) describes an injury to the head caused by a deliberate impact or shaking by a parent or carer. It can cause significant morbidity and mortality in infants, and is most commonly seen in those aged under 2 years. The initial presentation of AHT can include vague symptoms and the correct diagnosis may be missed by health professionals. Subdural haematoma, brain oedema and retinal haemorrhages are well-known features associated with AHT. However, other conditions such as birth trauma, accidental falls in infants and bleeding disorders can all mimic AHT, thus making its recognition difficult. Suspicion of AHT should lead to initiation of safeguarding procedures alongside organising neurological imaging to identify skull fracture and/or intracranial lesions. This article highlights different aspects of the clinical presentation of AHT and its management. Safeguarding and recognising child abuse is vital and requires every member of the multidisciplinary team to remain vigilant. An illustrative case study is included to highlight some of the challenges that health professionals working in different clinical set-ups are likely to come across while managing an infant with AHT.
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Affiliation(s)
- Francesca Louise Payne
- Year 5 Medical Student, Peninsula College of Medicine & Dentistry, Universities of Exeter and Plymouth
| | | | - Lucy Jenner
- Paediatric Sister, Emergency Department, Torbay Hospital, Torquay
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Usefulness of blood and cerebrospinal fluid laboratory testing to predict bacterial meningitis in the emergency department. NEUROLOGÍA (ENGLISH EDITION) 2019. [DOI: 10.1016/j.nrleng.2018.05.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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Bårnes GK, Gudina EK, Berhane M, Abdissa A, Tesfaw G, Abebe G, Feruglio SL, Caugant DA, Jørgensen HJ. New molecular tools for meningitis diagnostics in Ethiopia - a necessary step towards improving antimicrobial prescription. BMC Infect Dis 2018; 18:684. [PMID: 30572843 PMCID: PMC6302510 DOI: 10.1186/s12879-018-3589-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 12/04/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Meningitis remains a top cause of premature death and loss of disability-adjusted life years in low-income countries. In resource-limited settings, proper laboratory diagnostics are often scarce and knowledge about national and local epidemiology is limited. Misdiagnosis, incorrect treatment and overuse of antibiotics are potential consequences, especially for viral meningitis. METHODS A prospective study was conducted over three months in a teaching hospital in Ethiopia with limited laboratory resources. Cerebrospinal fluid (CSF) samples from patients with suspected meningitis were analysed using a multiplex PCR-based system (FilmArray, BioFire), in addition to basic routine testing with microscopy and culture. Clinical data, as well as information on treatment and outcome were collected. RESULTS Two hundred and eighteen patients were included; 117 (54%) neonates (0-29 days), 63 (29%) paediatrics (1 month-15 years) and 38 (17%) adults (≥16 years). Of 218 CSF samples, 21 (10%) were PCR positive; 4% in neonates, 14% in paediatrics and 18% in adults. Virus was detected in 57% of the PCR positive samples, bacteria in 33% and fungi in 10%. All CSF samples that were PCR positive for a bacterial agent had a white cell count ≥75 cells/mm3 and/or turbid appearance. The majority (90%) of patients received more than one antibiotic for treatment of the meningitis episode. There was no difference in the mean number of different antibiotics received or in the cumulative number of days with antibiotic treatment between patients with a microorganism detected in CSF and those without. CONCLUSIONS A rapid molecular diagnostic system was successfully implemented in an Ethiopian setting without previous experience of molecular diagnostics. Viral meningitis was diagnosed for the first time in routine clinical practice in Ethiopia, and viral agents were the most commonly detected microorganisms in CSF. This study illustrates the potential of rapid diagnostic tests for reducing antibiotic usage in suspected meningitis cases. However, the cost of consumables for the molecular diagnostic system used in this study limits its use in low-income countries.
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Affiliation(s)
- Guro K Bårnes
- Division for Infection Control and Environmental Health, Norwegian Institute of Public Health, Oslo, Norway.,Faculty of Medicine, University of Oslo, Oslo, Norway
| | | | | | | | - Getnet Tesfaw
- Institute of Health, Jimma University, Jimma, Ethiopia
| | - Gemeda Abebe
- Institute of Health, Jimma University, Jimma, Ethiopia.,Mycobacteriology Research Center, Jimma University, Jimma, Ethiopia
| | - Siri Laura Feruglio
- Division for Infection Control and Environmental Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Dominique A Caugant
- Division for Infection Control and Environmental Health, Norwegian Institute of Public Health, Oslo, Norway. .,Faculty of Medicine, University of Oslo, Oslo, Norway.
| | - Hannah Joan Jørgensen
- Division for Infection Control and Environmental Health, Norwegian Institute of Public Health, Oslo, Norway.,Norwegian Veterinary Institute, Oslo, Norway
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Zelazowska-Rutkowska B, Zak J, Wojtkowska M, Zaworonek J, Cylwik B. Use of the Sysmex XT-4000i hematology analyzer in the differentiation of cerebrospinal fluid cells in children. J Clin Lab Anal 2018; 33:e22822. [PMID: 30485541 DOI: 10.1002/jcla.22822] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 10/11/2018] [Accepted: 11/04/2018] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Routine analysis of pleocytosis and cellular composition of cerebrospinal fluid (CSF) is carried out with a phase-contrast microscope. The use of hematological analyzers seems to be an alternative to the manual method. The aim of the study was to assess the usefulness of the automated technique for counting and differentiating CSF cells in children. METHODS The study group consisted of 59 children (28 girls and 31 boys) aged from 4 to 17 years suffering from viral and bacterial meningitis. Children were divided into three subgroups according to CSF cell count: 1st group had a pleocytosis of 6-50 cells/µL, 2nd group-51-100 cells/µL, and 3rd group->100 cells/µL. A reference group involved 32 children (17 girls and 15 boys) aged from 2 to 18 years with a normal range of 0-5 cells/µL. Examination of CSF was performed in parallel by two different method, manual and automated. RESULTS The analysis of pleocytosis revealed that the values obtained by the manual method were statistically significantly lower in relation to the values obtained by automated technique in subgroups I and II. The number of mononuclear and polymorphonuclear cells in subgroups I, II, and III determined by both manual and automated methods was comparable. CONCLUSION We conclude that automated method cannot fully replace the previously used manual method and some of the dubious cases, such as samples with low pleocytosis rates or abnormal cells indicated by the analyzer, will still require microscopic examination.
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Affiliation(s)
| | - Janusz Zak
- Department of Pediatric Laboratory Diagnostics, Medical University of Bialystok, Bialystok, Poland
| | - Malgorzata Wojtkowska
- Department of Pediatric Laboratory Diagnostics, Medical University of Bialystok, Bialystok, Poland
| | - Justyna Zaworonek
- Department of Pediatric Laboratory Diagnostics, Medical University of Bialystok, Bialystok, Poland
| | - Bogdan Cylwik
- Department of Pediatric Laboratory Diagnostics, Medical University of Bialystok, Bialystok, Poland
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Jaijakul S, Salazar L, Wootton SH, Aguilera E, Hasbun R. The clinical significance of neutrophilic pleocytosis in cerebrospinal fluid in patients with viral central nervous system infections. Int J Infect Dis 2017; 59:77-81. [DOI: 10.1016/j.ijid.2017.04.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 04/06/2017] [Accepted: 04/08/2017] [Indexed: 10/19/2022] Open
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Imoh LC, Mutale M, Parker CT, Erasmus RT, Zemlin AE. Laboratory-based clinical audit as a tool for continual improvement: an example from CSF chemistry turnaround time audit in a South-African teaching hospital. Biochem Med (Zagreb) 2016; 26:194-201. [PMID: 27346964 PMCID: PMC4910269 DOI: 10.11613/bm.2016.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 02/28/2016] [Indexed: 11/01/2022] Open
Abstract
INTRODUCTION Timeliness of laboratory results is crucial to patient care and outcome. Monitoring turnaround times (TAT), especially for emergency tests, is important to measure the effectiveness and efficiency of laboratory services. Laboratory-based clinical audits reveal opportunities for improving quality. Our aim was to identify the most critical steps causing a high TAT for cerebrospinal fluid (CSF) chemistry analysis in our laboratory. MATERIALS AND METHODS A 6-month retrospective audit was performed. The duration of each operational phase across the laboratory work flow was examined. A process-mapping audit trail of 60 randomly selected requests with a high TAT was conducted and reasons for high TAT were tested for significance. RESULTS A total of 1505 CSF chemistry requests were analysed. Transport of samples to the laboratory was primarily responsible for the high average TAT (median TAT = 170 minutes). Labelling accounted for most delays within the laboratory (median TAT = 71 minutes) with most delays occurring after regular work hours (P < 0.05). CSF chemistry requests without the appropriate number of CSF sample tubes were significantly associated with delays in movement of samples from the labelling area to the technologist's work station (caused by a preference for microbiological testing prior to CSF chemistry). CONCLUSION A laboratory-based clinical audit identified sample transportation, work shift periods and use of inappropriate CSF sample tubes as drivers of high TAT for CSF chemistry in our laboratory. The results of this audit will be used to change pre-analytical practices in our laboratory with the aim of improving TAT and customer satisfaction.
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Affiliation(s)
- Lucius C Imoh
- Department of Chemical Pathology, Tygerberg Hospital, National Health Laboratory Service (NHLS) and University of Stellenbosch, Cape Town, South Africa
| | - Mubanga Mutale
- Department of Chemical Pathology, Tygerberg Hospital, National Health Laboratory Service (NHLS) and University of Stellenbosch, Cape Town, South Africa
| | - Christopher T Parker
- Department of Chemical Pathology, Tygerberg Hospital, National Health Laboratory Service (NHLS) and University of Stellenbosch, Cape Town, South Africa
| | - Rajiv T Erasmus
- Department of Chemical Pathology, Tygerberg Hospital, National Health Laboratory Service (NHLS) and University of Stellenbosch, Cape Town, South Africa
| | - Annalise E Zemlin
- Department of Chemical Pathology, Tygerberg Hospital, National Health Laboratory Service (NHLS) and University of Stellenbosch, Cape Town, South Africa
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Identification of Common Bacterial Pathogens Causing Meningitis in Culture-Negative Cerebrospinal Fluid Samples Using Real-Time Polymerase Chain Reaction. Int J Microbiol 2016; 2016:4197187. [PMID: 27563310 PMCID: PMC4983665 DOI: 10.1155/2016/4197187] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 06/18/2016] [Accepted: 07/04/2016] [Indexed: 12/04/2022] Open
Abstract
Background. Meningitis is a serious communicable disease with high morbidity and mortality rates. It is an endemic disease in Egypt caused mainly by Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae. In some settings, bacterial meningitis is documented depending mainly on positive cerebrospinal fluid (CSF) culture results or CSF positive latex agglutination test, missing the important role of prior antimicrobial intake which can yield negative culture and latex agglutination test results. This study aimed to utilize molecular technology in order to diagnose bacterial meningitis in culture-negative CSF samples. Materials and Methods. Forty culture-negative CSF samples from suspected cases of bacterial meningitis were examined by real-time polymerase chain reaction (real-time PCR) for the presence of lytA, bexA, and ctrA genes specific for Streptococcus pneumoniae, Haemophilus influenzae, and Neisseria meningitidis, respectively. Results. Positive real-time PCR results for Streptococcus pneumoniae were detected in 36 (90%) of culture-negative CSF samples while no positive results for Haemophilus influenzae or Neisseria meningitidis were detected. Four (10%) samples were negative by real-time PCR for all tested organisms. Conclusion. The use of molecular techniques as real-time PCR can provide a valuable addition to the proportion of diagnosed cases of bacterial meningitis especially in settings with high rates of culture-negative results.
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Julián-Jiménez A, Morales-Casado MI. Usefulness of blood and cerebrospinal fluid laboratory testing to predict bacterial meningitis in the emergency department. Neurologia 2016; 34:105-113. [PMID: 27469578 DOI: 10.1016/j.nrl.2016.05.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Accepted: 05/05/2016] [Indexed: 01/10/2023] Open
Abstract
INTRODUCTION The classic clinical presentation of bacterial meningitis (BM) is observed in less than half of the cases in adults, and symptoms are less specific in children, the elderly or immunocompromised, and other chronic patients. The usual signs and symptoms do not provide optimal sensitivity and specificity for distinguishing possible BM from viral meningitis (VM), which may lead to a delay in the appropriate antimicrobial therapy. Society therefore stands to benefit from the development of effective, objective, and rapid tools able to predict and identify patients with BM. These tools include laboratory tests for blood and cerebrospinal fluid (CSF). The aim of this review is to summarise recently published scientific evidence in order to clarify existing controversies and compare the usefulness and diagnostic ability of the different parameters used to predict BM. DEVELOPMENT Systematic search of the main bibliographic databases and platforms to identify articles published between January 2000 and January 2016. We selected 59 articles that meet the objectives of this review. CONCLUSIONS CSF lactate, proportion of polymorphonuclear leukocytes, and CSF glucose, as well as serum procalcitonin (PCT), are the independent factors most predictive of bacterial aetiology. The model that combines serum PCT and CSF lactate achieves the highest predictive power for BM, with a sensitivity and specificity exceeding 99%. We should consider BM when CSF lactate >33 md/dL and/or PCT>0.25ng/mL.
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Affiliation(s)
- A Julián-Jiménez
- Servicio de Urgencias, Complejo Hospitalario de Toledo, Toledo, España.
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JAROUSHA AMA, AFIFI A. Epidemiology and Risk Factors Associated with Developing Bacterial Meningitis among Children in Gaza Strip. IRANIAN JOURNAL OF PUBLIC HEALTH 2014; 43:1176-83. [PMID: 26175971 PMCID: PMC4500419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Accepted: 07/11/2014] [Indexed: 11/01/2022]
Abstract
BACKGROUND Bacterial meningitis is still the leading cause of high morbidity and mortality among the children. The present study was conducted to determine the epidemiology, clinical characteristics of bacterial meningitis and to evaluate the risk factors associated with developing the infection. METHODS This cross sectional study was conducted in three hospitals of Gaza strip -Palestine during the period 2009. All the children with clinical diagnosis of meningitis /meningoencephalitis admitted to these hospitals were included in the study. They were subjected to clinical examination as well as CSF bacteriological and serological investigations. RESULTS During the period (2009), 1853 patients were admitted to the hospitals with suspect of meningitis by pediatricians, 73 (3.9%) proved by culture to be acute bacterial meningitis, of these patients 62% were males and 38% were females. The common isolated pathogens were Neisseria meningitides (47.9%), Streptococcus pneumonia (15.1%), Haemophilus influenza (13.7%), E. coli (11.0%), Enterobacter spp. (6.8%), Citrobacter spp. (2.7%), Providencia spp. (1.4%), and Pseudomonas aeruginosa (1.4%). The common recorded symptoms were fever (78%), neck stiffness (47%), vomiting (37%), poor feeding (19%), and irritability (16%). Statistical analysis showed that there was statistical significance associated developing of infection with malnutrition (low hemoglobin level), high house crowdness and irritability (P-value <0.05). The ANOVA statistical analysis showed that S. pneumonia has an impact on developing low hemoglobin level and leukocytosis. CONCLUSION N. meningitides is still dominant and needs vaccination. The risk factors should be taken into consideration in any future plan.
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Affiliation(s)
| | - Ahmed.Al AFIFI
- 2. Al Nasser Pediatric Hospital, Ministry of Health, Gaza, Palestine
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