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INTRODUCTION: The use of computed tomography (CT) in healthcare institutions has increased rapidly in recent years. The Singapore Health Services (SingHealth) cluster of healthcare institutions has taken the first step in establishing a local cluster-wide CT Diagnostic Reference Levels (DRL) in Singapore. CT dose data from each institution were collected through two primary dosimetry metrics: volume CT dose index (CTDIvol measured in mGy) and dose-length product (DLP measured in mGy.cm). METHODS: Data from 19 CT scanners in seven institutions under one of Singapore healthcare cluster were retrospectively collected and analysed. The five common adult CT examinations analysed were CT Brain (non-contrast enhanced), CT Chest (IV contrast enhanced), CT Kidney-Ureter-Bladder (CT KUB, non-contrast enhanced), CT Pulmonary Angiogram (CT PA, IV contrast enhanced) and CT Abdomen-Pelvis (CT AP, IV contrast enhanced, single phase). Median CTDIvol and DLP values for the five CT examinations from each institution were derived, with the cluster DRLs determined as the 75th percentile of the distribution of the institution median dose values. RESULTS: A total of 2413 dose data points were collected over a six-month period from June to November 2020. The cluster CT DRLs for the five CT examinations were determined to be 47 mGy and 820 mGy.cm for CT Brain, 5.4 mGy and 225 mGy.cm for CT Chest, 6.7 mGy and 248 mGy.cm for CT PA, 4.6 mGy and 190 mGy.cm for CT KUB and 6.9 mGy and 349 mGy.cm for CT AP. CONCLUSION: The establishment of the cluster CT DRLs provided individual institutions with a better understanding if their CT doses are unusually high or low, while emphasising that these DRLs are not meant as hard dose limits or constraints to follow strictly.
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Niveles de Referencia para Diagnóstico , Tomografía Computarizada por Rayos X , Adulto , Humanos , Dosis de Radiación , Estudios Retrospectivos , Singapur , Tomografía Computarizada por Rayos X/métodos , Atención a la SaludRESUMEN
Moderate angle cutting maneuvers (between 45º and 90º) are common and essential performance skills for success in multidirectional sports. Research addresses the injury risks of cutting but few studies have attempted to quantify the performance of the cut itself. PURPOSE: To identify any anthropometric, kinematic, and/or kinetic markers of a high-performance cut so they may be taught and lead to more effective training. METHODS: Ten college-aged male athletes (mass 73.97 ± 8.77kg, height 1.81 ± 0.07m) and ten non-athletes (mass 87.37 ± 13.93kg, height 1.85 ± 0.04m) completed five moderate angle cutting trials with a speed constraint of 4.03 m/s - 4.44 m/s through a 3 m in to and 3 m out of a 60° change in direction set-up. Kinetic and kinematic measurements were recorded through ground reaction forces and lower limb angles. RESULTS: A Bonferroni correction revealed that athletes spent significantly less time in the propulsion phase (52.0% ± 0.02%, p < 0.02) compared to non-athletes (55.4% ± 0.03%, p < 0.02). The propulsion phase was determined as the percentage of the contact phase the knee was extending (e.g. Green, et al, 2012). The athletes produced significantly greater instantaneous values of X GRF, Y GRF, and Z GRF during the propulsion phase (p < .05). CONCLUSION: Greater GRFs coupled with shorter propulsion phases by the athletes accounted for the lack of differences in the propulsion impulse between the two groups. Changing direction in a shorter time improves an athlete's ability to evade an opponent, by decreasing the time an opponent has to react to a new direction.
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OBJECTIVES: Chronic pulmonary aspergillosis (CPA) is an emerging global disease with tuberculosis (TB) being the most important risk factor. Epidemiologic data on the seroprevalence of Aspergillus IgG and prevalence of CPA in different areas, especially in country with intermediate burden of TB, are lacking. METHODS: We prospectively recruited healthy volunteers, TB close contacts, active TB patients and participants with old pulmonary TB in Taiwan during 2012-2019. We measured serum Aspergillus fumigatus and niger-specific IgG levels and assessed if the participants were having CPA. RESULTS: A total of 1242 participants (including 200 healthy volunteers, 326 TB close contacts, 524 active TB patients and 192 old TB cases) were recruited. Using 27 mgA/L (milligrams of antigen-specific antibodies per liter) as cut-off level, the seropositive rate of A. fumigatus-specific IgG was 33.0% (66/200), 37.7% (123/326), 26.5% (139/524) and 43.2% (83/192) among the four groups, respectively. In multivariate logistic regression, pulmonary cavitation (OR 1.73; 95% CI 1.07-2.80), female sex (OR 1.49; 95% CI 1.14-1.95), old TB (OR 1.59; 1.05-2.42) were independent risk factors for Aspergillus IgG positivity. One (0.2%) active TB patient and four (2.1%) old TB patients developed CPA. Correlation between A. fumigatus and A. niger-specific IgG was high (Spearman correlation coefficient: 0.942). DISCUSSION: Geographic variation in Aspergillus IgG seroprevalence and CPA prevalence exists. A universal cut-off value for Aspergillus IgG may not exist. In areas and populations in which background Aspergillus IgG level is unknown, Aspergillus IgG may be better used as a test of exclusion for CPA using prespecified cut-off level.
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Aspergillus fumigatus/inmunología , Aspergillus niger/inmunología , Inmunoglobulina G/sangre , Aspergilosis Pulmonar/epidemiología , Tuberculosis Pulmonar/epidemiología , Adulto , Anciano , Anticuerpos Antifúngicos/sangre , Estudios de Casos y Controles , Femenino , Humanos , Masculino , Persona de Mediana Edad , Prevalencia , Estudios Prospectivos , Aspergilosis Pulmonar/sangre , Sensibilidad y Especificidad , Estudios Seroepidemiológicos , Caracteres Sexuales , Taiwán/epidemiología , Adulto JovenRESUMEN
Very few studies have focused on the outcome and management of patients with a single sputum isolate of nontuberculous mycobacterium (NTM) on initial examination. Patients with a single isolate of Mycobacterium avium complex (MAC), M. chelonae-abscessus, M. kansasii, or M. fortuitum from at least three sputum samples collected within 1 month were retrospectively identified. Those with follow-up sputum samples within 1 year were included in the analysis. Among the 202 patients included, M. fortuitum (n = 71, 35.1%) and MAC (n = 70, 34.7%) were the most common NTM species isolated, followed by M. chelonae-abscessus (n = 40, 19.8%) and M. kansasii (n = 21, 10.4%). The mean clinical follow-up period was 26.2 months. Forty-four patients (21.8%) had subsequent positive cultures of the same NTM species, while eight (4.0%) had bronchiectasis and developed NTM lung disease (NTM-LD). Neither patients without bronchiectasis nor those with M. fortuitum subsequently developed NTM lung disease. Among bronchiectatic patients with NTM other than M. fortuitum, age ≤65 years (p 0.006, OR 32.13), malignancy (p 0.048, OR 14.35), and initial radiographic score >2 (p 0.027, OR 20.06) were associated with subsequent NTM-LD. In all of the NTM patients, bronchiectasis (p <0.001, OR 5.46) and age ≤65 years (p 0.002, OR 3.29) were significantly associated with subsequent positive NTM culture. In patients with a single isolation of NTM from respiratory specimens, the presence of bronchiectasis and younger age indicates higher risk of subsequent culture-positivity and NTM-LD. Single isolation of M. fortuitum is of little clinical significance. Other patients with NTM, younger age, and more severe radiographic pulmonary lesion also warrant further attention.
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Infecciones por Mycobacterium no Tuberculosas/epidemiología , Infecciones por Mycobacterium no Tuberculosas/microbiología , Micobacterias no Tuberculosas/aislamiento & purificación , Neumonía Bacteriana/epidemiología , Neumonía Bacteriana/microbiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Comorbilidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Infecciones por Mycobacterium no Tuberculosas/diagnóstico , Oportunidad Relativa , Neumonía Bacteriana/diagnóstico , Sistema de Registros , Estudios Retrospectivos , Factores de Riesgo , Taiwán/epidemiología , Adulto JovenRESUMEN
Stenotrophomonas maltophilia can cause various clinical diseases; however, pleural infections due to S. maltophilia are rare. We evaluated the clinical characteristics and outcomes of patients with pleural infections (complicated parapneumonic effusion or empyema) due to S. maltophilia who were treated at a medical center in Taiwan from 2004 to 2012. During the study period, 40 patients were treated for pleural infections due to S. maltophilia. The incidence of S. maltophilia pleural infections ranged from 2.66 per 1,000,000 patient-days in 2009 to 12.44 per 1,000,000 patient-days in 2011. Most of the patients with S. maltophilia pleural infections were immunocompromised male adults and all of the infections were acquired in healthcare settings. The majority of patients had polymicrobial pleural infections (n = 31, 77.5 %) and the most common pathogen was Pseudomonas aeruginosa (n = 12). The causes of pleural infections due to S. maltophilia were pneumonia due to S. maltophilia in two patients (5 %), post-surgical/tube thoracostomy in 26 (65 %) patients, and fistula (bronchopleural, esophagopleural and biliopleural) in 12 (30 %) patients. The 14-day and 30-day mortality rates were 32.5 % and 42.5 %, respectively. Pleural infections due to S. maltophilia are most commonly the result of surgical procedures, thoracostomy, and underlying fistulas. These infections are associated with a high mortality rate, especially among immunocompromised patients.
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Empiema Pleural/patología , Infecciones por Bacterias Gramnegativas/patología , Derrame Pleural/patología , Stenotrophomonas maltophilia/aislamiento & purificación , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Preescolar , Coinfección/epidemiología , Coinfección/microbiología , Coinfección/patología , Infección Hospitalaria/epidemiología , Infección Hospitalaria/microbiología , Infección Hospitalaria/patología , Empiema Pleural/epidemiología , Empiema Pleural/microbiología , Femenino , Infecciones por Bacterias Gramnegativas/epidemiología , Infecciones por Bacterias Gramnegativas/microbiología , Humanos , Huésped Inmunocomprometido , Incidencia , Masculino , Persona de Mediana Edad , Derrame Pleural/epidemiología , Derrame Pleural/microbiología , Infección de la Herida Quirúrgica/epidemiología , Infección de la Herida Quirúrgica/microbiología , Infección de la Herida Quirúrgica/patología , Taiwán/epidemiología , Resultado del Tratamiento , Adulto JovenRESUMEN
BACKGROUND: Obstructive uropathy and chronic urinary tract infection increase the risk of urinary tract cancer. Urinary tuberculosis (UTB) can cause chronic urinary tract inflammation, lead to obstructive uropathy, and potentially contribute to the development of urinary tract cancer. However, the association between UTB and urinary tract cancer has not been studied. METHODS: This study enrolled 135 142 tuberculosis (TB) cases (male, 69%) from a nationwide health insurance research database in Taiwan and investigated the risk factors for urinary tract cancer, with emphasis on a history of UTB. The incidence of urinary tract cancer in the general population without TB was also calculated for comparison. RESULTS: The TB patients had a mean age of 57.5 ± 19.5 years. Of the 1287 UTB and 133 855 non-UTB patients, 15 (1.2%) and 396 (0.3%) developed urothelial carcinoma, respectively (P<0.001); and 2 (0.2%) and 96 (0.1%) developed renal cell carcinoma, respectively (P=0.240). Cox regression analysis revealed that age, male sex, end-stage renal disease, obstructive uropathy, arsenic intoxication, organ transplantation, and UTB (hazard ratio: 3.38 (2.01-5.69)) were independent risk factors for urothelial carcinoma. The hazard ratio of UTB was higher among female patients (5.26 (2.12-13.06)) than that among male patients (2.96 (1.57-5.60)). CONCLUSION: Urinary tuberculosis had a strong association with urothelial carcinoma, but not with renal cell carcinoma. In TB endemic areas, the urinary tract of TB patients should be scrutinised. It is also imperative that these patients be followed-up carefully in the post-treatment period, and urinalysis, ultrasonography or endoscopy should be an integral part of the follow-up.
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Carcinoma de Células Renales/epidemiología , Carcinoma de Células Transicionales/epidemiología , Neoplasias Renales/epidemiología , Infecciones Urinarias/epidemiología , Neoplasias Urológicas/epidemiología , Adulto , Anciano , Estudios de Cohortes , Femenino , Humanos , Masculino , Persona de Mediana Edad , Taiwán/epidemiología , Tuberculosis Urogenital/epidemiología , Urotelio/patologíaRESUMEN
BACKGROUND: Hepatotoxicity with first-line drugs, a major complication of anti-tuberculosis treatment, has not been studied by time-dependent analysis. DESIGN: Adult patients diagnosed with pulmonary tuberculosis (PTB) from 2005 to 2009 were reviewed retrospectively. Hepatotoxicity during anti-tuberculosis treatment was defined by symptomatic elevation of liver transaminases ≥3 times the upper limit of normal, or ≥5 times if asymptomatic. Risk factors for hepatotoxicity were investigated using time-dependent Cox regression analysis. RESULTS: Of 926 patients identified and followed for 4122.9 person-months (pm), 111 (12.0%) developed hepatotoxicity after a median 38.0 days from start of treatment. Around 3.5% had severe hepatotoxicity. The most common symptoms were general malaise and poor appetite. The incidence rate of hepatotoxicity was 0.59, 0.69 and 3.71/100 pm for isoniazid, rifampicin (RMP) and pyrazinamide (PZA), respectively. Old age, female sex, autoimmune disease, human immunodeficiency virus infection, more days with PZA in the last 8-14 days, and fewer days with RMP in the last 15-21 days before hepatotoxicity were independent risk factors for hepatotoxicity during treatment. CONCLUSION: A significant number of adult patients on first-line treatment experience hepatotoxicity. PZA is the most common causative drug. For high-risk patients, careful adjustment of the anti-tuberculosis regimen and regular monitoring of liver transaminases are necessary.
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Antituberculosos/efectos adversos , Enfermedad Hepática Inducida por Sustancias y Drogas/etiología , Tuberculosis Pulmonar/tratamiento farmacológico , Adulto , Anciano , Anciano de 80 o más Años , Antituberculosos/uso terapéutico , Enfermedad Hepática Inducida por Sustancias y Drogas/epidemiología , Enfermedad Hepática Inducida por Sustancias y Drogas/fisiopatología , Femenino , Estudios de Seguimiento , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Modelos de Riesgos Proporcionales , Análisis de Regresión , Estudios Retrospectivos , Factores de Riesgo , Índice de Severidad de la Enfermedad , Taiwán/epidemiología , Factores de Tiempo , Transaminasas/metabolismoRESUMEN
Toll-like receptor (TLR) 2-mediated innate immunity is an important defense system against Mycobacterium tuberculosis infection. Studies on TLR2 protein expression and downstream cytokines in tuberculosis patients are lacking. TLR2 expression in the peripheral blood monocytes of 87 tuberculosis patients and 94 healthy subjects was evaluated using flow cytometry. TLR2 expression and its downstream cytokines, including interleukin (IL)-6, IL-10, tumor necrosis factor (TNF)-alpha, and interferon-gamma, were correlated with the clinical manifestations and outcomes of tuberculosis. The TLR2 expression in peripheral blood monocytes was higher in tuberculosis patients than in healthy subjects. Among the tuberculosis patients, those aged ≥70 years with disseminated tuberculosis or aged <70 years with symptom duration ≥14 days had lower initial TLR2 expression. After two months of treatment, TLR2 expression decreased in most patients, except in those whose sputum samples remained culture-positive for M. tuberculosis. Proportional hazards regression analyses revealed that high initial TLR2 expression and IL-10 plasma level were associated with shorter survival. TLR2 may play an important role in the course of tuberculosis. Its expression on peripheral blood monocytes and the plasma level of the downstream anti-inflammatory cytokine IL-10 may be important outcome predictors and have potential use in the management of tuberculosis patients.
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Interleucina-10/sangre , Mycobacterium tuberculosis/inmunología , Receptor Toll-Like 2/análisis , Tuberculosis/diagnóstico , Tuberculosis/inmunología , Adulto , Factores de Edad , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Leucocitos Mononucleares/inmunología , Masculino , Persona de Mediana Edad , Plasma/inmunología , Pronóstico , Estudios Prospectivos , Resultado del Tratamiento , Adulto JovenRESUMEN
OBJECTIVE: Although chronic obstructive pulmonary disease (COPD) is a common form of structural lung disease associated with pulmonary non-tuberculous mycobacteria (NTM) infection, no longitudinal studies have investigated the role of NTM in COPD disease progression. DESIGN: From 2000 to 2008, spirometry-confirmed COPD patients with sputum specimens sent for mycobacterial cultures were included. Analysis of clinical, microbiological and pulmonary function data was performed. RESULTS: The 251 patients were divided into three groups according to the number of NTM isolates: multiple (n = 47), single (n = 63), and no (n = 141) isolates. Mycobacterium avium complex was the most common species in multiple isolates (36.2%) and single isolate (28.6%) groups. Overall, 24.7% of COPD patients had been admitted for exacerbations at least once a year, and patients with multiple and single NTM isolates were more than twice as likely as those with no isolate to experience such exacerbations (38.3% vs. 31.7% vs. 17.0%). After controlling for confounders, patients with multiple NTM isolates had a greater decline in forced expiratory volume in one second than those with single or no isolates (-79.4 ± 32.8 ml vs. -61.6 ± 31.9 ml and -56.2 ± 31.5 ml). CONCLUSION: This study suggests that NTM may play a role in disease progression and deterioration of pulmonary function in COPD patients.
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Infecciones por Mycobacterium no Tuberculosas/microbiología , Complejo Mycobacterium avium/aislamiento & purificación , Micobacterias no Tuberculosas/aislamiento & purificación , Enfermedad Pulmonar Obstructiva Crónica/microbiología , Anciano , Anciano de 80 o más Años , Progresión de la Enfermedad , Femenino , Volumen Espiratorio Forzado , Humanos , Masculino , Persona de Mediana Edad , Infecciones por Mycobacterium no Tuberculosas/fisiopatología , Infección por Mycobacterium avium-intracellulare/microbiología , Infección por Mycobacterium avium-intracellulare/fisiopatología , Enfermedad Pulmonar Obstructiva Crónica/fisiopatología , Estudios Retrospectivos , Esputo/microbiologíaRESUMEN
Unlike tuberculous peritonitis, peritonitis due to non-tuberculous mycobacteria (NTM) has unclear clinical manifestations. This study aimed to clarify the clinical manifestations and laboratory results of NTM peritonitis and compare it to tuberculous peritonitis. This retrospective study was conducted from 2000 to 2008 in a medical centre in Taiwan. Patients with mycobacteria isolated from ascites were identified and compared according to causative pathogens (Mycobacterium tuberculosis or NTM). Those with NTM peritonitis were further classified into the 'probable' and 'possible' groups based on diagnostic evidence. Twenty-five patients with NTM peritonitis and 65 with tuberculous peritonitis were reviewed. Mycobacterium avium complex was the most common NTM pathogen (52%). There was no obvious difference between the 'probable' and 'possible' NTM peritonitis groups regarding age and laboratory data. Patients with NTM peritonitis and those with tuberculous peritonitis had no differences in age or gender but varied in symptoms and serum laboratory data. NTM peritonitis was 100% associated with underlying co-morbidities and had lower proportions of lymphocytes and albumin level in ascites. Twelve (48%) NTM peritonitis and 21 (32%) tuberculous peritonitis patients died during the 6-month follow-up. Anti-mycobacterial treatment, but not mycobacterial species, was correlated with better 6-month survival. In Taiwan, NTM is responsible for 28% of mycobacterial peritonitis cases, which have a poor prognosis if untreated. There are some differences in clinical manifestations between NTM and tuberculous peritonitis. NTM peritonitis should be considered in patients with peritonitis but without causative microorganisms identified other than NTM.
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Infecciones por Mycobacterium no Tuberculosas/patología , Peritonitis/microbiología , Peritonitis/patología , Tuberculosis/patología , Distribución por Edad , Anciano , Anciano de 80 o más Años , Antituberculosos/administración & dosificación , Ascitis/microbiología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Mycobacterium/clasificación , Mycobacterium/aislamiento & purificación , Infecciones por Mycobacterium no Tuberculosas/microbiología , Infecciones por Mycobacterium no Tuberculosas/mortalidad , Estudios Retrospectivos , Análisis de Supervivencia , Taiwán , Resultado del Tratamiento , Tuberculosis/microbiología , Tuberculosis/mortalidadRESUMEN
We studied twenty patients with Leuconostoc spp. bacteraemia at a tertiary hospital in northern Taiwan between 1995 and 2008. All isolates were identified to species level using conventional and commercial automated methods in conjunction with 16S rRNA sequencing analysis. Leuconostoc lactis (15/20, 75%) constituted the most common species but required molecular methods for accurate identification. Minimum inhibitory concentrations (MICs) of 10 antimicrobial agents were determined using the broth microdilution method. Among these 20 patients, 19 had healthcare-associated Leuconostoc spp. bacteraemia and 11 patients (55%) had underlying malignancies. Eleven had been hospitalised for more than 30 days (median: 32.5 days; range: 0-252 days) before the bacteraemic episode. At the time of bacteraemia, 11 had a Pitt bacteraemia score of ≥ 4 (median: 4; range: 0-7) and 12 had a modified Acute Physiological Assessment and Chronic Health Evaluation (APACHE II) score of ≥ 20 (median: 22; range: 5-37). Azithromycin (MIC: 0.12 µg/mL), moxifloxacin (MIC: 0.25-0.5 µg/mL), daptomycin (MIC: 0.03-0.25 µg/mL) and tigecycline (MIC: 0.06-0.12 µg/mL) exhibited good in vitro activity against Leuconostoc spp. although bacteraemia due to L. lactis was associated with high mortality in immunocompromised patients.
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Bacteriemia/epidemiología , Infección Hospitalaria/epidemiología , Infecciones por Bacterias Grampositivas/epidemiología , Leuconostoc/aislamiento & purificación , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Antibacterianos/farmacología , Bacteriemia/microbiología , Bacteriemia/mortalidad , Técnicas Bacteriológicas/métodos , Niño , Infección Hospitalaria/microbiología , Infección Hospitalaria/mortalidad , Femenino , Infecciones por Bacterias Grampositivas/microbiología , Infecciones por Bacterias Grampositivas/mortalidad , Hospitales Universitarios , Humanos , Leuconostoc/clasificación , Masculino , Pruebas de Sensibilidad Microbiana , Persona de Mediana Edad , Técnicas de Diagnóstico Molecular/métodos , Factores de Riesgo , Taiwán/epidemiología , Adulto JovenRESUMEN
Patients with pulmonary tuberculosis (TB) can be simultaneously infected with different strains of Mycobacterium tuberculosis (mixed infection). We investigated the prevalence and risk factors of mixed infection by Beijing and non-Beijing strains in pulmonary TB patients in Taiwan. We developed a quantitative PCR method to simultaneously detect the presence of Beijing and non-Beijing strains. A total of 868 pretreatment samples (from 868 patients), including 563 sputum samples smear-positive for acid-fast bacilli and 305 liquid medium samples culture-positive for mycobacteria, were tested. Medical records of patients with culture-confirmed pulmonary TB were reviewed. The detection limit of our quantitative PCR method was five copies of target sequences. With mycobacterial culture result as the reference standard, the sensitivity and specificity of our quantitative PCR method were 95% and 98%, respectively. M. tuberculosis strains were isolated in 466 samples, of which 231 (49.6%) were infected with a Beijing strain. Another 14 patients (3.0%) had mixed infection, with the Beijing strain being the dominant strain in 13 (93%). Age <25 years with pulmonary cavities was associated with mixed infection. In patients infected with non-Beijing strains, the bacterial load of non-Beijing strains was lower among those with mixed infection than among those without. Our quantitative PCR method was accurate in detecting Beijing and non-Beijing strains in smear-positive sputum and culture-positive liquid medium samples. Mixed infection was present in pulmonary TB patients (3.0%), especially in those aged <25 years with pulmonary cavities. Beijing strains seem to be more dominant than non-Beijing strains in patients with mixed infection.
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Mycobacterium tuberculosis/clasificación , Mycobacterium tuberculosis/aislamiento & purificación , Reacción en Cadena de la Polimerasa/métodos , Tuberculosis Pulmonar/epidemiología , Tuberculosis Pulmonar/microbiología , Adulto , Anciano , Carga Bacteriana , Medios de Cultivo , Femenino , Humanos , Masculino , Persona de Mediana Edad , Mycobacterium tuberculosis/genética , Prevalencia , Factores de Riesgo , Especificidad de la Especie , Esputo/microbiología , Taiwán/epidemiología , Adulto JovenRESUMEN
BACKGROUND: Serum biomarkers are rarely studied in patients with non-tuberculous mycobacterial lung disease (NTM-LD). OBJECTIVE: To investigate the role of soluble triggering receptor expressed on myeloid cells-1 (sTREM-1) and other inflammatory markers in NTM-LD. DESIGN: From April 2009 to March 2010, patients with NTM culture-positive respiratory specimens who were clinically and radiographically suspected of NTM-LD were evaluated for serum levels of sTREM-1, C-reactive protein, procalcitonin and interferon-gamma. RESULTS: Of the 86 patients enrolled, 60 fulfilled the diagnosis of NTM-LD. Using the receiver-operating characteristics curve analysis, serum sTREM-1 had the highest discriminative power for NTM-LD and colonisation (area under the curve = 0.714). Using a cut-off value of 180 pg/ml, the sensitivity and specificity of sTREM-1 were respectively 58% and 89%. Logistic regression analysis revealed that Mycobacterium avium complex, M. kansasii, positive sputum acid-fast smear and higher serum sTREM-1 level were independent risk factors for NTM-LD. Age >65 years and higher serum sTREM-1 level were associated with worse 6-month survival. CONCLUSION: In patients with respiratory specimens that are culture-positive for NTM with clinical suspicion of NTM-LD, serum sTREM-1 level measurements may be helpful in diagnosing and predicting outcome for NTM-LD.
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Enfermedades Pulmonares/diagnóstico , Glicoproteínas de Membrana/sangre , Infecciones por Mycobacterium no Tuberculosas/diagnóstico , Receptores Inmunológicos/sangre , Anciano , Anciano de 80 o más Años , Biomarcadores/sangre , Proteína C-Reactiva/análisis , Calcitonina/sangre , Péptido Relacionado con Gen de Calcitonina , Distribución de Chi-Cuadrado , Humanos , Interferón gamma/sangre , Estimación de Kaplan-Meier , Modelos Logísticos , Enfermedades Pulmonares/sangre , Enfermedades Pulmonares/microbiología , Persona de Mediana Edad , Análisis Multivariante , Infecciones por Mycobacterium no Tuberculosas/sangre , Infecciones por Mycobacterium no Tuberculosas/microbiología , Mycobacterium avium/aislamiento & purificación , Mycobacterium kansasii/aislamiento & purificación , Pronóstico , Modelos de Riesgos Proporcionales , Estudios Prospectivos , Precursores de Proteínas/sangre , Medición de Riesgo , Factores de Riesgo , Sensibilidad y Especificidad , Esputo/microbiología , Taiwán , Receptor Activador Expresado en Células Mieloides 1 , Regulación hacia ArribaRESUMEN
OBJECTIVE: To investigate the clinical characteristics and outcomes of patients with pleurisy due to non-tuberculous mycobacteria (NTM), which are currently unclear. DESIGN: From 2000 to 2007, patients with NTM and Mycobacterium tuberculosis isolated from pleural effusion (PE) samples were identified and compared. RESULTS: Thirty-five NTM patients and 140 tuberculosis (TB) patients were reviewed. Patients with NTM pleurisy were less likely to have lung involvement and receive anti-mycobacterial treatment compared with those with tuberculous pleurisy. NTM pleurisy had a higher PE leukocyte count and a lower percentage of lymphocytes. M. avium complex (MAC) was the most common pathogen in NTM pleurisy. Patients with MAC pleurisy were younger and tended to have more extra-pleural involvement and immune dysfunction. One-year mortality in the NTM pleurisy group was 37%, and anti-NTM treatment was associated with better survival. Patients with additional diagnostic evidence were more likely to receive anti-NTM treatment. CONCLUSION: NTM pleurisy is common and has a high 1-year mortality rate. Anti-NTM treatment may provide better 1-year survival and should be considered once NTM pleurisy is diagnosed.
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Antibacterianos/uso terapéutico , Pulmón/patología , Pleuresia/fisiopatología , Tuberculosis Pleural/fisiopatología , Factores de Edad , Anciano , Antituberculosos/uso terapéutico , Femenino , Estudios de Seguimiento , Humanos , Recuento de Leucocitos , Pulmón/microbiología , Linfocitos/metabolismo , Masculino , Persona de Mediana Edad , Mycobacterium/aislamiento & purificación , Complejo Mycobacterium avium/aislamiento & purificación , Mycobacterium tuberculosis/aislamiento & purificación , Derrame Pleural/microbiología , Pleuresia/tratamiento farmacológico , Pleuresia/mortalidad , Estudios Retrospectivos , Sobrevida , Taiwán/epidemiología , Resultado del Tratamiento , Tuberculosis Pleural/tratamiento farmacológico , Tuberculosis Pleural/mortalidadRESUMEN
OBJECTIVE: To investigate whether adding moxifloxacin (MXF) to the standard anti-tuberculosis regimen can shorten the time to sputum culture conversion in pulmonary tuberculosis (PTB). METHODS: Adults with culture-positive PTB were divided into two treatment groups by their choice: standard regimen alone (HERZ group) and standard regimen plus daily 400 mg MXF in the first 2 months (MXF group). Sputum samples were collected thrice weekly in the first 8 weeks. The propensity score was calculated to estimate the conditional probability of entering the MXF group. Factors influencing time to culture conversion were investigated using Cox proportional hazards regression analysis stratified by propensity score. RESULTS: Sixty-two patients were enrolled in the MXF group and 88 in the HERZ group; respectively 51 and 72 completed the study. The regimen was modified before culture conversion in respectively 6 (12%) and 12 (16%; P = 0.47) patients, due to adverse effects. The time to culture conversion was shorter in the MXF group (HR 2.1, 95%CI 1.4-3.2). The culture conversion rate after 6 weeks of treatment was respectively 82% and 61% (P = 0.011, <0.05/4, calculated using the modified Bonferroni method). CONCLUSIONS: Adding MXF to the standard anti-tuberculosis regimen in the first 2 months was associated with a shorter time to culture conversion, a higher 6-week culture conversion rate and reduced transmission of tuberculosis.
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Antituberculosos/uso terapéutico , Compuestos Aza/uso terapéutico , Mycobacterium tuberculosis/aislamiento & purificación , Quinolinas/uso terapéutico , Tuberculosis Pulmonar/tratamiento farmacológico , Adulto , Anciano , Antituberculosos/efectos adversos , Compuestos Aza/efectos adversos , Quimioterapia Combinada , Femenino , Fluoroquinolonas , Humanos , Masculino , Persona de Mediana Edad , Moxifloxacino , Modelos de Riesgos Proporcionales , Estudios Prospectivos , Quinolinas/efectos adversos , Esputo/microbiología , Taiwán , Factores de Tiempo , Tuberculosis Pulmonar/microbiología , Tuberculosis Pulmonar/transmisiónAsunto(s)
Artritis Infecciosa/diagnóstico , Infecciones por Mycobacterium/diagnóstico , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Preescolar , Femenino , Humanos , Lactante , Masculino , Persona de Mediana Edad , Infecciones por Mycobacterium no Tuberculosas/diagnóstico , Mycobacterium tuberculosis , Micobacterias no Tuberculosas , Infecciones Oportunistas/diagnóstico , Tuberculosis Osteoarticular/diagnóstico , Adulto JovenRESUMEN
Patients presenting with pleural effusion of undetermined aetiology were prospectively enrolled, and an enzyme-linked immunospot (ELISPOT) assay on pleural fluid and peripheral blood was performed. Forty patients were studied, including 19 with culture- or biopsy-confirmed (n = 15) or clinically compatible (n = 4) tuberculous pleurisy, and 21 with pleural effusions due to non-tuberculous causes. The sensitivity, specificity and positive and negative predictive values of the assay were 94.7%, 85.7%, 85.7% and 94.7%, respectively, on pleural fluid, and 77.8%, 90.5%, 87.5% and 82.6%, respectively, on blood. Antigen-specific, interferon-gamma-secreting T-cells were concentrated eight to ten times in pleural fluid as compared with blood. Among the seven patients not suitable for pleural biopsy and three patients whose biopsy results were non-diagnostic, nine had positive ELISPOT result with pleural fluid. The ELISPOT assay for interferon-gamma can accurately diagnose tuberculous pleurisy and is helpful for patients not suitable for pleural biopsy and those whose biopsy results are non-diagnostic.
Asunto(s)
Sangre/inmunología , Exudados y Transudados/inmunología , Interferón gamma/análisis , Interferón gamma/sangre , Tuberculosis Pleural/diagnóstico , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Inmunoensayo/métodos , Masculino , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Estudios Prospectivos , Sensibilidad y Especificidad , Adulto JovenRESUMEN
Candidaemia is increasingly important in intensive care units (ICUs). Compared with Candida albicans fungaemia, the impact of C. glabrata fungaemia on ICU patients is not well-known. The aim of this study was to investigate the clinical features, the antifungal susceptibility and the treatment outcomes of C. glabrata fungaemia in ICU patients. The medical records of ICU patients with candidaemia between 2000 and 2005 were reviewed retrospectively, and antifungal susceptibility testing was performed for isolates of C. glabrata. Among 147 episodes of candidaemia occurring in adult ICUs, C. glabrata was the second most common species and accounted for 45 (30%) episodes of candidaemia. The incidence of C. glabrata fungaemia was 1.3/1000 ICU admissions. Fluconazole resistance was found in 11% of C. glabrata isolates. The 30-day all-cause mortality rate was 58%. Therapeutic regimens containing amphotericin B were associated with better outcome. Despite higher fluconazole resistance, C. glabrata candidaemia was not associated with greater mortality than non-glabrata candidaemia in the ICU setting.