Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 48
Filtrar
Más filtros

Banco de datos
País/Región como asunto
Tipo del documento
Intervalo de año de publicación
1.
Phys Rev Lett ; 121(11): 111303, 2018 Sep 14.
Artículo en Inglés | MEDLINE | ID: mdl-30265123

RESUMEN

We present new constraints on sub-GeV dark-matter particles scattering off electrons based on 6780.0 kg d of data collected with the DarkSide-50 dual-phase argon time projection chamber. This analysis uses electroluminescence signals due to ionized electrons extracted from the liquid argon target. The detector has a very high trigger probability for these signals, allowing for an analysis threshold of three extracted electrons, or approximately 0.05 keVee. We calculate the expected recoil spectra for dark matter-electron scattering in argon and, under the assumption of momentum-independent scattering, improve upon existing limits from XENON10 for dark-matter particles with masses between 30 and 100 MeV/c^{2}.

2.
Phys Rev Lett ; 121(8): 081307, 2018 Aug 24.
Artículo en Inglés | MEDLINE | ID: mdl-30192596

RESUMEN

We present the results of a search for dark matter weakly interacting massive particles (WIMPs) in the mass range below 20 GeV/c^{2} using a target of low-radioactivity argon with a 6786.0 kg d exposure. The data were obtained using the DarkSide-50 apparatus at Laboratori Nazionali del Gran Sasso. The analysis is based on the ionization signal, for which the DarkSide-50 time projection chamber is fully efficient at 0.1 keVee. The observed rate in the detector at 0.5 keVee is about 1.5 event/keVee/kg/d and is almost entirely accounted for by known background sources. We obtain a 90% C.L. exclusion limit above 1.8 GeV/c^{2} for the spin-independent cross section of dark matter WIMPs on nucleons, extending the exclusion region for dark matter below previous limits in the range 1.8-6 GeV/c^{2}.

3.
Artículo en Inglés | MEDLINE | ID: mdl-38704092

RESUMEN

PURPOSE: It is unclear whether preoperative serum uric acid (SUA) elevation may play a role in the development of acute kidney injury (AKI) associated with cardiac surgery (CSA-AKI). We conducted a cohort study to evaluate the influence of preoperative hyperuricemia on AKI in patients at high risk for developing SC-AKI. DESIGN: Multicenter prospective international cohort study. SETTING: Fourteen university hospitals in Spain and the United Kingdom. PARTICIPANTS: We studied 261 consecutive patients at high risk of developing CSA-AKI, according to a Cleveland score ≥ 4 points, from July to December 2017. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: AKIN criteria were used for the definition of AKI. Multivariable logistic regression models and propensity score-matched pairwise analysis were used to determine the adjusted association between preoperative hyperuricemia (≥7 mg/dL) and AKI. Elevated preoperative AUS (≥7 mg/dL) was present in 190 patients (72.8%), whereas CSA-AKI occurred in 145 patients (55.5%). In multivariable logistic regression models, hyperuricemia was not associated with a significantly increased risk of AKI (adjusted Odds Ratio [OR]: 1.58; 95% confidence interval [CI]: 0.81-3; P = .17). In propensity score-matched analysis of 140 patients, the hyperuricemia group experienced similar adjusted odds of AKI (OR 1.05, 95%CI 0.93-1.19, P = .37). CONCLUSIONS: Hyperuricemia was not associated with an increased risk of AKI in this cohort of patients undergoing cardiac surgery at high risk of developing CSA-AKI.

4.
Med Intensiva ; 37(4): 259-83, 2013 May.
Artículo en Español | MEDLINE | ID: mdl-23507335

RESUMEN

Since allogeneic blood transfusion (ABT) is not harmless, multiple alternatives to ABT (AABT) have emerged, though there is great variability in their indications and appropriate use. This variability results from the interaction of a number of factors, including the specialty of the physician, knowledge and preferences, the degree of anemia, transfusion policy, and AABT availability. Since AABTs are not harmless and may not meet cost-effectiveness criteria, such variability is unacceptable. The Spanish Societies of Anesthesiology (SEDAR), Hematology and Hemotherapy (SEHH), Hospital Pharmacy (SEFH), Critical Care Medicine (SEMICYUC), Thrombosis and Hemostasis (SETH) and Blood Transfusion (SETS) have developed a Consensus Document for the proper use of AABTs. A panel of experts convened by these 6 Societies have conducted a systematic review of the medical literature and have developed the 2013 Seville Consensus Document on Alternatives to Allogeneic Blood Transfusion, which only considers those AABT aimed at decreasing the transfusion of packed red cells. AABTs are defined as any pharmacological or non-pharmacological measure aimed at decreasing the transfusion of red blood cell concentrates, while preserving patient safety. For each AABT, the main question formulated, positively or negatively, is: « Does this particular AABT reduce the transfusion rate or not?¼ All the recommendations on the use of AABTs were formulated according to the Grades of Recommendation Assessment, Development and Evaluation (GRADE) methodology.


Asunto(s)
Transfusión Sanguínea/normas , Terapias Complementarias , Humanos , Seguridad del Paciente , Procedimientos Quirúrgicos Operativos
5.
Clin Microbiol Rev ; 21(1): 60-96, 2008 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-18202437

RESUMEN

In recent years, the increasing number of donors from different regions of the world is providing a new challenge for the management and selection of suitable donors. This is a worldwide problem in most countries with transplantation programs, especially due to the increase in immigration and international travel. This paper elaborates recommendations regarding the selection criteria for donors from foreign countries who could potentially transmit tropical or geographically restricted infections to solid-organ transplant recipients. For this purpose, an extensive review of the medical literature focusing on viral, fungal, and parasitic infections that could be transmitted during transplantation from donors who have lived or traveled in countries where these infections are endemic has been performed, with special emphasis on tropical and imported infections. The review also includes cases described in the literature as well as risks of transmission during transplantation, microbiological tests available, and recommendations for each infection. A table listing different infectious agents with their geographic distributions and specific recommendations is included.


Asunto(s)
Infecciones Bacterianas/prevención & control , Guías como Asunto , Micosis/prevención & control , Trasplante de Órganos/normas , Enfermedades Parasitarias/prevención & control , Virosis/prevención & control , Animales , Infecciones Bacterianas/etiología , Infecciones Bacterianas/transmisión , Transmisión de Enfermedad Infecciosa/prevención & control , Humanos , Micosis/etiología , Micosis/transmisión , Trasplante de Órganos/efectos adversos , Enfermedades Parasitarias/etiología , Enfermedades Parasitarias/transmisión , Donantes de Tejidos , Viaje , Clima Tropical , Virosis/etiología , Virosis/transmisión
6.
Rev Esp Anestesiol Reanim (Engl Ed) ; 67(8): 425-437, 2020 Oct.
Artículo en Inglés, Español | MEDLINE | ID: mdl-32800622

RESUMEN

BACKGROUND: The clinical course of COVID-19 critically ill patients, during their admission in the intensive care unit (UCI), including medical and infectious complications and support therapies, as well as their association with in-ICU mortality has not been fully reported. OBJECTIVE: This study aimed to describe clinical characteristics and clinical course of ICU COVID-19 patients, and to determine risk factors for ICU mortality of COVID-19 patients. METHODS: Prospective, multicentre, cohort study that enrolled critically ill COVID-19 patients admitted into 30 ICUs from Spain and Andorra. Consecutive patients from March 12th to May 26th, 2020 were enrolled if they had died or were discharged from ICU during the study period. Demographics, symptoms, vital signs, laboratory markers, supportive therapies, pharmacological treatments, medical and infectious complications were reported and compared between deceased and discharged patients. RESULTS: A total of 663 patients were included. Overall ICU mortality was 31% (203 patients). At ICU admission non-survivors were more hypoxemic [SpO2 with non-rebreather mask, 90 (IQR 83 to 93) vs. 91 (IQR 87 to 94); P<.001] and with higher sequential organ failure assessment score [SOFA, 7 (IQR 5 to 9) vs. 4 (IQR 3 to 7); P<.001]. Complications were more frequent in non-survivors: acute respiratory distress syndrome (ARDS) (95% vs. 89%; P=.009), acute kidney injury (AKI) (58% vs. 24%; P<10-16), shock (42% vs. 14%; P<10-13), and arrhythmias (24% vs. 11%; P<10-4). Respiratory super-infection, bloodstream infection and septic shock were higher in non-survivors (33% vs. 25%; P=.03, 33% vs. 23%; P=.01 and 15% vs. 3%, P=10-7), respectively. The multivariable regression model showed that age was associated with mortality, with every year increasing risk-of-death by 1% (95%CI: 1 to 10, P=.014). Each 5-point increase in APACHE II independently predicted mortality [OR: 1.508 (1.081, 2.104), P=.015]. Patients with AKI [OR: 2.468 (1.628, 3.741), P<10-4)], cardiac arrest [OR: 11.099 (3.389, 36.353), P=.0001], and septic shock [OR: 3.224 (1.486, 6.994), P=.002] had an increased risk-of-death. CONCLUSIONS: Older COVID-19 patients with higher APACHE II scores on admission, those who developed AKI grades ii or iii and/or septic shock during ICU stay had an increased risk-of-death. ICU mortality was 31%.


Asunto(s)
Betacoronavirus , Infecciones por Coronavirus/mortalidad , Mortalidad Hospitalaria , Unidades de Cuidados Intensivos/estadística & datos numéricos , Neumonía Viral/mortalidad , APACHE , Lesión Renal Aguda/epidemiología , Factores de Edad , Anciano , Andorra/epidemiología , Antivirales/uso terapéutico , Arritmias Cardíacas/epidemiología , COVID-19 , Infecciones por Coronavirus/sangre , Infecciones por Coronavirus/complicaciones , Infecciones por Coronavirus/terapia , Enfermedad Crítica , Femenino , Humanos , Hipoxia/epidemiología , Tiempo de Internación , Masculino , Persona de Mediana Edad , Oportunidad Relativa , Oxígeno/administración & dosificación , Pandemias , Neumonía Viral/sangre , Neumonía Viral/complicaciones , Neumonía Viral/terapia , Estudios Prospectivos , Análisis de Regresión , Terapia Respiratoria/métodos , Factores de Riesgo , SARS-CoV-2 , Síndrome Respiratorio Agudo Grave/epidemiología , Choque/epidemiología , España/epidemiología
7.
Clin Transl Oncol ; 10(5): 298-9, 2008 May.
Artículo en Inglés | MEDLINE | ID: mdl-18490248

RESUMEN

Rituximab is a treatment option to non-Hodg kin's diffuse large B-cell lymphoma (NHDLBCL) in advanced stage and comorbility. It is known the cardiotoxicity effect of this drug, but there is no previous report describing a complete atrioventricular block (CAVB) secundary to treatment with Rituximab. We present an elderly woman treated with monotherapy with Rituximab who experienced a CAVB after administration of the fifth dose of this drug.


Asunto(s)
Anticuerpos Monoclonales/efectos adversos , Antineoplásicos/efectos adversos , Bloqueo Atrioventricular/inducido químicamente , Linfoma de Células B Grandes Difuso/tratamiento farmacológico , Anciano de 80 o más Años , Anticuerpos Monoclonales de Origen Murino , Dislipidemias/complicaciones , Femenino , Humanos , Linfoma de Células B Grandes Difuso/fisiopatología , Rituximab , Osteofitosis Vertebral/complicaciones , Accidente Cerebrovascular/complicaciones , Trombosis de la Vena/complicaciones
8.
Diabetol Metab Syndr ; 9: 55, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28729885

RESUMEN

RATIONALE: CD36 is a scavenger receptor located on monocytes which is involved in foam cell transformation. AIM: To evaluate CD36 expression under different glycemic states in both healthy subjects and in atherosclerotic patients. SUBJECTS AND METHODS: In order to evaluate the possible effects of hyperglycemia on CD36 expression in healthy subjects, an in vitro experiment was carried out using monocyte in three different conditions: extreme hyperglycemia (HG), euglycemia (EG) and in the absence of glucose. On the other hand, three groups of atherosclerotic patients were evaluated according to their glycemic conditions: normoglycemic (NG), prediabetic (preDM) and diabetic (DM) patients. CD36 expression (mRNA, non-glycated and glycated protein) was analyzed in monocytes. RESULTS: CD36 mRNA expression in the in vitro experiment peaked at 4 and 24 h under HG conditions. No differences in mRNA levels were found in the EG and control group. The level of non-glycated proteins was higher in HG and EG conditions compared with control group. Glycated protein expression was inhibited by glucose in a sustained manner. In atherosclerotic patients, a significant association was observed when comparing glycated CD36 protein expression in DM with NG patients (p = 0.03). No significant differences were found in mRNA and non-glycated CD36 expression in these patients. Moreover, BMI, insulin, weight and treatment were shown to be related to CD36 expression (mRNA, non-glycated and glycated protein levels, depending of the case) in atherosclerotic patients. CONCLUSIONS: Hyperglycemia is an important modulator of CD36 mRNA and non-glycated protein expression in vitro, increasing de novo synthesis in healthy subjects. In atherosclerotic patients, there are progressive increases in CD36 receptors, which may be due to a post-translational stimulus.

9.
Ann Ig ; 18(6): 535-42, 2006.
Artículo en Italiano | MEDLINE | ID: mdl-17228610

RESUMEN

This study is aimed at assessing time dedicated to, motivation and involvement in physical activity on behalf of pre-adolescents. 802 students (49.3% boys and 50.7% girls; mean age: 12.6) attending 43 classes of 11 Brianza's post-elementary schools. A questionnaire was prepared and administered to the involved sample. Classes took part in this study through randomized selection and data were analyzed using program Epi Info 6. Most of the respondents (60.1%) stay involved in sport because "it makes me feel good" and 32.4% because sport is "enjoyable and entertaining". Pre-adolescents chose the sport in which they become engaged on the basis of personal inclination (40%), in order to share experiences and their free time with friends (15.4%); 13.7% declare to prefer sport to be practiced in team. (13.7%). The most practiced sport are: football (51.3% boys, 4.5% girls), volley (3.9%-36.4%), dance (0.8%-25.2%) e swimming (9.4%-14%). 80.8% in the sample practice physical activity in settings outside schools and, among these, 51.7% dedicate three or more hours weekly to extra-school activities. There are significant differences (p < 0.05) between males' and females' engagement in physical activity (mean value: 4.1 hours; males: 4.6 h, females: 3.5 h). Among pre-teens, 18% declare to be physically inactive at all; 15.7% do not take part in sport activities because afraid to be bullied or shamed by peers. Research show that males are significantly more involved in physical activity than females.


Asunto(s)
Deportes/estadística & datos numéricos , Estudiantes/estadística & datos numéricos , Adolescente , Niño , Femenino , Conductas Relacionadas con la Salud , Encuestas Epidemiológicas , Humanos , Italia , Masculino , Motivación , Instituciones Académicas , Encuestas y Cuestionarios
10.
Neuroscience ; 130(2): 435-43, 2005.
Artículo en Inglés | MEDLINE | ID: mdl-15664700

RESUMEN

Modulation of soluble guanylate cyclase (sGC) by nitric oxide (NO) is altered in brain from cirrhotic patients. The aim of this work was to assess whether an animal model of cirrhosis, bile duct ligation, alone or combined with diet-induced hyperammonemia for 7-10 days reproduces the alterations in NO modulation of sGC found in brains from cirrhotic patients. sGC activity was measured under basal conditions and in the presence of NO in cerebellum and cerebral cortex of the following groups of rats: controls, bile duct ligation without or with hyperammonemia and hyperammonemia without bile duct ligation. In cerebellum activation of sGC by NO was significantly lower in bile duct ligated rats with (12 +/- five-fold) or without (14 +/- six-fold) hyperammonemia than in control rats (23 +/- seven-fold). In cerebral cortex activation of sGC by NO was higher in rats with bile duct ligation with hyperammonemia (124 +/- 30-fold) but not without hyperammonemia (59 +/- 15-fold) than in control rats (66 +/- 11-fold). The combination of bile duct ligation and hyperammonemia reproduces the alterations in the modulation of soluble guanylate cyclase by NO found in cerebral cortex and cerebellum of cirrhotic patients while bile duct ligation or hyperammonemia alone reproduces the effects in cerebellum but not in cerebral cortex.


Asunto(s)
Encéfalo/metabolismo , Encefalopatía Hepática/metabolismo , Hiperamonemia/complicaciones , Cirrosis Hepática Experimental/complicaciones , Óxido Nítrico/metabolismo , Receptores Citoplasmáticos y Nucleares/metabolismo , Animales , Encéfalo/fisiopatología , Cerebelo/metabolismo , Cerebelo/fisiopatología , Corteza Cerebral/metabolismo , Corteza Cerebral/fisiopatología , Colestasis/complicaciones , Modelos Animales de Enfermedad , Guanilato Ciclasa , Encefalopatía Hepática/fisiopatología , Humanos , Hiperamonemia/metabolismo , Hiperamonemia/fisiopatología , Ligadura , Cirrosis Hepática Experimental/metabolismo , Cirrosis Hepática Experimental/fisiopatología , Masculino , Subunidades de Proteína/metabolismo , Ratas , Ratas Wistar , Guanilil Ciclasa Soluble , Regulación hacia Arriba/fisiología
11.
Arch Bronconeumol ; 41(2): 71-7, 2005 Feb.
Artículo en Español | MEDLINE | ID: mdl-15718000

RESUMEN

OBJECTIVE: To validate a cardiorespiratory polygraphy system (BITMED NGP 140) by comparing it to conventional polysomnography in the diagnosis of sleep apnea-hypopnea syndrome. PATIENTS AND METHODS: Polysomnography and cardio-respiratory polygraphy were performed simultaneously on 103 consecutive patients referred because of suspected sleep apnea-hypopnea syndrome. The Bland and Altman method and intraclass correlation coefficients were used to assess agreement between the 2 methods of measurement. Receiver operating characteristic (ROC) curves were used to calculate the yield of cardiorespiratory polygraphy compared to that of conventional polysomnography. RESULTS: Ninety-two valid studies were obtained for 72 men and 20 women (mean [SD] age: 52.4 [12] years). By the Bland and Altman method, the difference between the respiratory event index obtained with the BITMED NGP140 and the apnea-hypopnea index (AHI) obtained by conventional polysomnography was 7.6 (13.2) in the manual analysis (95% confidence interval [CI], 4.9-10.4) and 12 (15.3) (95% CI, 8.8-15.3) in the automatic analysis. For a corrected AHI (AH/total time in bed) mean differences were -2.2 (5.9) and 2.4 (8.2) for manual and automatic analysis. The intraclass correlation coefficients were greater than 0.94. The areas under the ROC curves of the respiratory event index were greater than 0.97 for all cut points. For an AHI of 30 or higher, the best cut-off point determined by manual cardiorespiratory polygraphy analysis was 27 (sensitivity, 98% and specificity, 98%). For the different cut-off points cardiorespiratory polygraphy correctly classified between 92% and 98% of patients in both the manual and automatic analyses. CONCLUSIONS: The BITMED NGP140 had good agreement with conventional polysomnography for the measurement of respiratory events and provided high diagnostic yield.


Asunto(s)
Polisomnografía , Síndromes de la Apnea del Sueño/diagnóstico , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad
12.
Med Lav ; 96(1): 42-51, 2005.
Artículo en Italiano | MEDLINE | ID: mdl-15847107

RESUMEN

BACKGROUND: Naso-sinusal cancers (NSC) cover a group of rare tumours in Italy for which the role of occupational risk has been established. The systematic survey of NSC in the province of Brescia made it possible to analyse the jobs of the cases occurring in the area. OBJECTIVES: The aims of the research were: estimation of epithelial NSC incidence both in the general population and among wood and leather workers, description of the frequency and type of occupational exposure to substances or manufacturing processes. METHODS: The epithelial type cases were obtained from the Naso-sinusal Cancer Register (population-based) operating in the Province of Brescia since 1994. Work histories were obtained via a standardized questionnaire. RESULTS: The annual incidence ofepithelial NSC (for 100,000) in the entire population (1,090,000 inhabitants, ISTAT census 1991) from 1993 to 1997 and from 1998 to 2002 was nearly the same, 0.82 and 0.90 for men, 0.37 and 0.37 for women, respectively. The nasal cavity was the most affected anatomic site (45%) and squamous cell carcinoma was the most frequent histotype (44%) among the first 100 cases whose case histories were appropriate; in the ethmoidal sinus adenocarcinoma represented 62% of the cases; 25% of all cases were exposed to occupational carcinogens (list A) and particularly to wood dust (17%), even if only of softwood species (30%), and leather dusts (7%) especially in the shoe repair. The average latency period was 47 years (SD 7.4) and 44 years (SD 5.6) respectively; 71% of these epithelial NSC cases involved the ethmoid and 85% were adenocarcinomas. Only 1% of the cases was exposed to chromium and nickel and occurred in galvanization processes. Among the exposures to occupational risks with limited epidemiological evidence (list B) there was one case exposed to formaldehyde and 42 cases occurring in the building, agricultural, metallurgic and textile sectors. Thus all the exposures to occupational risks, both certain and probable (lists A and B) reached 84% among men and 17% among women. Epithelial NSC annual incidence rates (for 100,000) estimated among the wood and leather workers for the period 1985-2002 were 13 and 6.5 respectively. CONCLUSION: The results confirm the meaning of sentinel event for these tumours in occupational health and justify maintaining an active surveillance programme for the cases occurring in the area.


Asunto(s)
Neoplasias Nasales/epidemiología , Enfermedades Profesionales/epidemiología , Adulto , Anciano , Femenino , Humanos , Incidencia , Italia/epidemiología , Masculino , Persona de Mediana Edad , Neoplasias Nasales/etiología , Enfermedades Profesionales/etiología , Neoplasias de los Senos Paranasales/epidemiología , Neoplasias de los Senos Paranasales/etiología
13.
Med Lav ; 96(4): 312-29, 2005.
Artículo en Inglés | MEDLINE | ID: mdl-16457428

RESUMEN

BACKGROUND: Firm scientific evidence supports the causal association between malignant mesothelioma (MM) and occupational exposure to asbestos. Risk attributable to occupation varies from 30 to 80% across different populations. The existence of a threshold level below which there is no risk of MM is still debated. A prompt and thorough assessment of exposure is essential to evaluate and manage MM cases, from diagnostic and epidemiological points of view. OBJECTIVES AND METHODS: To highlight the multiple areas of intervention by Occupational Physicians (OP) in MM evaluation and management, to describe an experience of OP in the province of Brescia. RESULTS: The main areas of interest of the OP are exposure assessment, diagnosis (clinical, etiological), medico-legal issues, social consequences, preventive strategies, risk communication, scientific dispute/uncertainties. By means of an active search, the Brescia MM registry, managed by OP belonging to the local health authority observed 309 MM from 1977 to 2003; the local Institute of Occupational Health, hosted in a hospital of national relevance, evaluated about 200 MM in the last decade. The main outcomes of OP activity are the high percentage of direct interviews, individual case management, expert exposure assessment, etiological diagnosis, counselling, medico-legal assistance, better knowledge of occupational risks, enhanced cooperation among health professionals (oncologists, pathologists, surgeons, pneumologists, general practitioners and OP), important contribution to Registries and to epidemiology (estimates of attributable risks, incidence, survival rates), with positive social and scientific consequences (insurance agencies, trade union organizations, public events, teaching opportunities). CONCLUSIONS: This experience highlights the multifaceted role of OP in active research and evaluation of MM cases, in the context of a multidisciplinary approach.


Asunto(s)
Mesotelioma/diagnóstico , Enfermedades Profesionales/diagnóstico , Medicina del Trabajo , Rol del Médico , Neoplasias Pleurales/diagnóstico , Adulto , Anciano , Anciano de 80 o más Años , Amianto/efectos adversos , Carcinógenos/toxicidad , Exposición a Riesgos Ambientales/efectos adversos , Estudios de Evaluación como Asunto , Femenino , Humanos , Entrevistas como Asunto , Italia/epidemiología , Masculino , Mesotelioma/epidemiología , Mesotelioma/etiología , Mesotelioma/terapia , Persona de Mediana Edad , Enfermedades Profesionales/epidemiología , Enfermedades Profesionales/etiología , Enfermedades Profesionales/terapia , Neoplasias Pleurales/epidemiología , Neoplasias Pleurales/etiología , Neoplasias Pleurales/terapia , Sistema de Registros , Estudios Retrospectivos
14.
Transplantation ; 65(11): 1494-5, 1998 Jun 15.
Artículo en Inglés | MEDLINE | ID: mdl-9645809

RESUMEN

BACKGROUND: Liver granulomatosis is an occasional finding in posttransplant liver biopsies. Its diagnosis is made more difficult by the variety of conditions that can lead to it. In the nontransplant setting, the association of liver granulomatosis and hepatitis C virus (HCV) infection has occasionally been described. METHODS: We describe the case of a patient with a liver transplantation for an HCV-associated cirrhosis who developed an alteration of liver tests. Granulomatosis was detected on the liver biopsy. RESULTS: Other causes of granulomatosis were satisfactorily excluded. The development of the lesions coincided with a viral flare-up. CONCLUSION: We think that HCV can be listed among the possible causes of liver granulomas in the posttransplant setting and that it must be considered in the differential diagnosis of this condition.


Asunto(s)
Granuloma/virología , Hepatitis C/complicaciones , Hepatopatías/virología , Trasplante de Hígado , Complicaciones Posoperatorias , Adulto , Biopsia , Granuloma/patología , Humanos , Hígado/patología , Cirrosis Hepática/cirugía , Cirrosis Hepática/virología , Hepatopatías/patología , Masculino
15.
Chest ; 104(2): 399-404, 1993 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-8339626

RESUMEN

OBJECTIVES: To determine the relative usefulness of different criteria for the separation of pleural transudates from exudates. DESIGN: Prospective evaluation of patients referred for thoracentesis. SETTING: Community teaching hospital. PATIENTS: Three hundred fifty-one consecutive patients with pleural effusions referred for thoracentesis. Fifty-four of these patients were excluded from the analysis. MEASUREMENTS: We recorded clinical characteristics and final diagnosis and measured pleural fluid and serum levels of total protein, lactate dehydrogenase, and cholesterol. All patients included were followed up until final diagnosis. MEAN RESULTS: Forty-four (15 percent) pleural effusions were transudates and 253 (85 percent) were exudates. The criteria of Light et al, with a sensitivity of 98 percent and a specificity of 77 percent for exudates, showed the best accuracy (95.2 percent). Moreover, when the cutoff used for the criteria of Light et al was modified according to our own laboratory results, specificity rose to 93 percent with almost a similar accuracy (94 percent). Protein pleural fluid/serum ratio > 0.5 and pleural fluid cholesterol > 60 mg/dl showed equal specificity (91 percent), but the former had better sensitivity for exudates (88 percent vs 81 percent). CONCLUSIONS: When the proportion of exudates included is 85 percent or more, as in the present series, the criteria of Light et al remain the method that offers the highest accuracy for segregating transudates from exudates.


Asunto(s)
Exudados y Transudados/química , Derrame Pleural/clasificación , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Proteínas Sanguíneas/análisis , Niño , Colesterol/análisis , Colesterol/sangre , Estudios de Evaluación como Asunto , Femenino , Insuficiencia Cardíaca/complicaciones , Humanos , L-Lactato Deshidrogenasa/análisis , L-Lactato Deshidrogenasa/sangre , Masculino , Persona de Mediana Edad , Derrame Pleural/etiología , Derrame Pleural/metabolismo , Estudios Prospectivos , Sensibilidad y Especificidad
16.
Int J Tuberc Lung Dis ; 2(6): 513-7, 1998 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-9626610

RESUMEN

SETTING: A community teaching hospital in Alicante, Spain. OBJECTIVE: To assess the characteristics of tuberculous pleurisy (TP) in our hospital, and to evaluate the differences between primary and reactivation forms. DESIGN: Between January 1984 and December 1993, all human immunodeficiency virus (HIV)-negative patients with TP were included in the study. From September 1987 onward, patients were prospectively studied. Charts, radiography, pleural fluid findings and diagnostic methods were evaluated. Two groups were distinguished according to chest radiographs: those patients with upper lobe lesions, calcified adenopathy and old pleural thickening were considered reactivation forms. RESULTS: Of the 129 patients (mean age, 31 +/- 18 years), 76% had primary TP and 24% reactivation TP. Differences were found in age (28 +/- 17 vs 40 +/- 18 years, P < 0.01), smoking (43% vs 74%, P < 0.01) and alcohol abuse (23% vs 47%, P < 0.05), weight loss (29% vs 50%, P < 0.05), positive sputum smears and cultures (2% vs 16%, 7% vs 28%, P < 0.01), and number of large effusions (46% vs 26%, P < 0.05), but not in tuberculin reactivity, pleural fluid findings, positive pleural cultures, or presence of pleural granuloma. CONCLUSION: In our setting, TP predominantly affects young adults. Clinical, immunological, and pleural findings are similar to those of patients with classic symptoms of TP. Older age, smoking and alcohol abuse, smaller effusions and sputum yield are differential characteristics of reactivation forms.


Asunto(s)
Tuberculosis Pleural/diagnóstico por imagen , Tuberculosis Pulmonar/diagnóstico por imagen , Adulto , Estudios de Casos y Controles , Femenino , Seronegatividad para VIH , Humanos , Incidencia , Masculino , Estudios Prospectivos , Radiografía , Recurrencia , Tuberculosis Pleural/diagnóstico , Tuberculosis Pleural/epidemiología , Tuberculosis Pulmonar/diagnóstico , Tuberculosis Pulmonar/epidemiología
17.
Med Lav ; 92(4): 249-62, 2001.
Artículo en Italiano | MEDLINE | ID: mdl-11676187

RESUMEN

Several cases of malignant mesothelioma (MM) previously unknown to the Occupational Health and Safety Service were recognised in the Province of Brescia after an active surveillance program carried out during the first nineteen years of operation; a large proportion of the cases involved workers occupationally exposed to asbestos. A local Mesothelioma Register was subsequently set up in 1993 and by the end of 1999, 190 MM cases had been collected. The annual incidence ratio (standardized on the Italian population, census 1981, x100,000 person-years) was calculated in the 1980-1999 period and showed an increasing trend for location in the pleura in both sexes; in the 1996-1999 period the incidence ratio was 2.95 for males and 1.35 for females. In the same period, this trend was not observed for peritoneal location, with an incidence ratio of 0.17 and 0.37 for males and females respectively. 161 pleural MM (84.7%) and 28 peritoneal MM (14.7%) are described; histopathologic diagnosis was performed in 161 cases (84.7%). Anamneses were collected for 88% of the cases but with direct information from patients only in 65% of these in the recent period. Only 7 cases of asbestosis were diagnosed in the MM cases, whereas 31 cases of pleural abnormalities were observed but only 17 of these were observed in workers occupationally exposed to asbestos. Occupational asbestos exposure was evaluated as certain, probable or possible in 45% of total cases and in 54% of recently (1996-1999) observed cases, which were ten times more frequent in males. Exposure occurred in sectors works where asbestos was not used as raw material, such as construction, iron and steel and metal working. MM's from environmental and non-occupational exposure to asbestos were very few, 1.5% and 0.5% respectively. In 65 MM's asbestos exposure was unknown (34.2%); 50% of these concerned females; for whom the industry and jobs are discussed. The distribution of histologic types of MM was similar in asbestos exposed and non exposed cases. No association between peritoneal mesotheliomas and heavy exposure to asbestos was observed. Ten cases of MM were diagnosed in subjects under 45 years old (5.2%) with only one case occupationally exposed. 2 cases were exposed to radiation therapy (1%) and 2 cases to thoracic trauma (1%). Although in Italy MM has been included in the list of compensatable occupational diseases by law since 1994, a large number of cases occupationally exposed to asbestos are still not recognised by the National Insurance Institute (INAIL). A number of problems limiting work of the Mesothelioma Register and its usefulness are discussed. The Lombardy Mesothelioma Register set up in January 2000 should be able to overcome the limits identified in the past.


Asunto(s)
Amianto/efectos adversos , Mesotelioma/epidemiología , Mesotelioma/etiología , Exposición Profesional/estadística & datos numéricos , Neoplasias Peritoneales/epidemiología , Neoplasias Peritoneales/etiología , Neoplasias Pleurales/epidemiología , Neoplasias Pleurales/etiología , Adulto , Anciano , Femenino , Humanos , Incidencia , Italia , Masculino , Persona de Mediana Edad
19.
Rev Esp Anestesiol Reanim ; 60(5): 263.e1-263.e25, 2013 May.
Artículo en Español | MEDLINE | ID: mdl-23415109

RESUMEN

Since allogeneic blood transfusion (ABT) is not harmless, multiple alternatives to ABT (AABT) have emerged, though there is great variability in their indications and appropriate use. This variability results from the interaction of a number of factors, including the specialty of the physician, knowledge and preferences, the degree of anemia, transfusion policy, and AABT availability. Since AABTs are not harmless and may not meet cost-effectiveness criteria, such variability is unacceptable. The Spanish Societies of Anesthesiology (SEDAR), Hematology and Hemotherapy (SEHH), Hospital Pharmacy (SEFH), Critical Care Medicine (SEMICYUC), Thrombosis and Hemostasis (SETH) and Blood Transfusion (SETS) have developed a Consensus Document for the proper use of AABTs. A panel of experts convened by these 6 Societies have conducted a systematic review of the medical literature and have developed the 2013 Seville Consensus Document on Alternatives to Allogeneic Blood Transfusion, which only considers those AABT aimed at decreasing the transfusion of packed red cells. AABTs are defined as any pharmacological or non-pharmacological measure aimed at decreasing the transfusion of red blood cell concentrates, while preserving patient safety. For each AABT, the main question formulated, positively or negatively, is: "Does this particular AABT reduce the transfusion rate or not?" All the recommendations on the use of AABTs were formulated according to the Grades of Recommendation Assessment, Development and Evaluation (GRADE) methodology.


Asunto(s)
Procedimientos Médicos y Quirúrgicos sin Sangre/normas , Humanos , Guías de Práctica Clínica como Asunto
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA