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Objective:To investigate the value of metagenomic next-generation sequencing (mNGS) in central nervous system infection (CNSI) of critically ill patients from Neurosurgery.Methods:A prospective study was conducted. From October 2019 to April 2021, 52 patients with highly suspected CNSI in the Department of Neurosurgical Intensive Care Unit (NICU) of our hospital were chosen. The collected cerebrospinal fluid (CSF) samples were simultaneously performed mNGS and traditional culture; the clinical diagnosis of CNSI was taken as the standard, and the sensitivity, specificity, positive predictive value, negative predictive value, and time from sample collection to result feedback of these two methods were compared. Receiver operating characteristic (ROC) curve was used to analyze the diagnostic values of mNGS and traditional culture in CNSI.Results:Eventually, 25 patients with CNSI were clinically confirmed; 23 were with positive mNGS, including 16 with bacterial infection, 4 with viral infection, 1 with fungal infection, and 2 with mixed infection (1 with bacteria+virus+fungus, 1 with bacteria+virus); 8 were with positive traditional culture, all of which were bacterial infections. The sensitivity, specificity, positive predictive value, and negative predictive value of mNGS were 92.0%, 85.2%, 85.2%, and 92.0%, respectively; those of traditional culture were 32.0%, 100.0%, 100.0%, and 61.4%, respectively; the time from sample collection to result feedback of mNGS and traditional culture was (31.77±5.23) h and (101.83±9.15) h, respectively, with significant difference ( P<0.05). ROC curve showed that the area under the curve (AUC) of mNGS for diagnosis of CNSI was 0.886 ( 95%CI: 0.786-0.986, P<0.001); the AUC of traditional culture for diagnosis of CNSI was 0.660 ( 95%CI: 0.508-0.812, P=0.002). Conclusion:For patients with CNSI from NICU, mNGS has good diagnostic efficacy and application value and can effectively compensate for the lack of traditional cerebrospinal fluid culture.
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Background: Authors objective was to study the incidence and risk factors for meningitis in neonates with clinical suspicion of sepsis in Neonatal Intensive Care Unit (NICU) of tertiary care hospital of Mumbai, India.Methods: This descriptive observational study enrolled Consecutive 92 patients of either sex with suspected neonatal sepsis admitted in NICU of Tertiary Care Hospital. All neonates admitted to NICU with clinical suspicion of sepsis or developing signs of sepsis during NICU stay were included in study. Exclusion criteria were 1.Neonates with hemodynamic instability 2.major congenital malformations 3.contraindication or no willingness for Lumber puncture (LP ) 4.neonates who have received intravenous antibiotics for more than 24 hours elsewhere.Standard data collection form was used to collect all demographic data and clinical characteristics of neonates.Results: Incidence of meningitis in study population was 7.6%. Cases of meningitis in study population had mean birth weight 1.91 kg, 71.43% were preterm, 57.14% vaginaly delivered, 42.86% by LSCS, Premature rupture of membrane (PROM) observed in 28.57% cases. Meconium stained liquor in 42.86% cases and foul smelling liquor in 28.57% cases observed. 42.86% cases required resuscitation and 28.57% received surfactant therapy. Poor feeding (100%), lethargy (85.71%), weak cry (85.71%) and tachypnea (50.58%). Retractions (85.71%), Grunting (57.14%) and Nasal flaring (42.86%) were clinical presentation. Lab findings in a case of meningitis: mean Hemoglobin (Hb) 15.22 gm%, Leukopenia (28.57%), Leukocytosis 28.57%, Absolute Neutrophil count (ANC) <1800 (28.57%), Thrombocytopenia 42.85%, blood culture positive (28.57%) hypoglycemia (28.57%), CSF white cell count (124.57cells/ml.), mean CSF protein level (60 mg/dl.) Mean CSF glucose level (40.86 mg/dl.) CSF culture was positive in two cases of meningitis.Conclusions: Authors study highlights the diagnostic utility of routine lumbar puncture in neonates with clinically suspected sepsis.
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Resumen Introducción: La meningitis es una emergencia médica que requiere diagnóstico y tratamiento oportuno para evitar complicaciones. Objetivo: Determinar las características clínicas, epidemiológicas y el manejo terapéutico de meningitis en la primera infancia. Materiales y métodos: Estudio transversal que evaluó menores hasta los seis años de edad con meningitis bacteriana o aséptica en dos centros de Medellín, 2010 - 2013. Se recolectaron características clínicas, paraclínicas y terapéuticas. Las variables cualitativas se describieron mediante frecuencias absolutas y relativas y las cuantitativas con mediana y rango intercuartílico. Se exploró diferencias en las características de los pacientes según grupo de edad, mediante la prueba Chi-cuadrado o Fisher. Resultados: De 56 pacientes, 33 (58,9%) eran del sexo masculino; 26 (46,4%) presentaron meningitis bacteriana, 20 (35,7%) aséptica y 10 (17,9%) indeterminada; 36 (64,3%) fueron mayores de dos meses, con manifestaciones clínicas inespecíficas (fiebre e irritabilidad). Se aislaron principalmente microorganismos Gram negativos en hemocultivos y Gram positivos en líquido cefalorraquídeo. El tratamiento antibiótico más frecuente fue cefalosporinas de tercera-generación en 13 (65%) menores de 2 meses y 28 (77,8%) mayores. Fallecieron dos pacientes y seis presentaron complicaciones. Conclusiones: la meningitis bacteriana fue la más frecuente en menores de un año. El tratamiento combinado es ideal para garantizar un adecuado cubrimiento y evitar complicaciones.
Abstract Introduction: Meningitis is a medical emergency that requires early diagnosis and treatment to avoid complications. Objective: To determine the clinical, epidemiological characteristics and therapeutic management of meningitis in early childhood. Materials and methods: A cross-sectional study, which evaluated children up to six years old with bacterial or aseptic meningitis from 2010 to 2013, was conducted in two centers in Medellin. Clinical, paraclinical and therapeutic characteristics were collected. The qualitative variables were described by absolute and relative frequencies, and the quantitative ones with median and interquartile range. Differences in patient characteristics according to age group were explored, using the Chi-square or Fisher test. Results: From the 56 patients studied, 33 (58.9%) were male; 26 (46.4%) showed bacterial meningitis, 20 (35.7%) aseptic one and 10 (17.9%) indeterminate one; 36 (64.3%) were older than two months, with non-specific clinical manifestations (fever and irritability). Gram-negative microorganisms were mainly isolated in blood cultures and Gram positive in cerebrospinal fluid. The most common antibiotic treatment was third-generation cephalosporins in 13 (65%) children who were less than 2 months and 28 (77.8%) in older ones. Two patients died and six children presented complications. Conclusions: Bacterial meningitis was the most frequent in children under one year old. Combined treatment is ideal to ensure adequate coverage and avoid complications.
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Lactante , Meningitis Bacterianas , Líquido Cefalorraquídeo , Niño , Meningitis AsépticaRESUMEN
PURPOSE: The present study was undertaken to assess whether the results of cerebrospinal fluid (CSF) culture are related to prognosis. METHODS: Subjected to this study were 51 cases admitted to our department who had been diagnosed as bacterial meningitis. They were divided into two groups, Group l (20) with positive CSF culture and Group ll (31) with negative outcome, then both groups were compared. RESULTS: Group l cases tended to be younger than Group ll cases. The male/female ratio was 1.2 in Group l and 1.6 in Group ll. Laboratory findings of CFS were not significantly different in either groups, except for the glucose level, which was markedly lower in Group l than in Group ll. The causative organisms identified from CSF culture were E. coli (5), group B Streptococcus (4) and S. aureus (1) among the 10 cases aged under 2 months. On the other hand, S. pneumoniae were isolated in 7 and H. influenzae in 3 among the 10 older cases. Mortality rate and the incidence of complications were higher in Group l than in Group ll. Mortality rate as related to the causative organism was highest with E. coli, followed by group B Streptococcus, H. influenzae. CONCLUSION: Bacterial meningitis cases with positive CSF culture have significantly lower glucose concentration in the CSF, and also higher rates of mortality and incidence of serious complications than those with negative culture.