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3.
Clin Electroencephalogr ; 31(4): 165-9, 2000 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-11056837

RESUMEN

EEGs from 16 patients with stroke in three different stages of evolution were recorded. EEG sources were calculated every 0.39 Hz by frequency domain VARETA. The main source was within the delta band in 2 out of 4 chronic patients, and in 67% of the patients in the acute or subacute stages when edema (cytotoxic or vasogenic) was present. Moreover, all patients showed abnormal activity in the theta band. Sources of abnormal activity in cortical or corticosubcortical infarcts were located in the cortex, surrounding the lesion. At the site of the infarct, a decrease of EEG power was observed. Sources of abnormal theta power coincided with edema and/or ischemic penumbra.


Asunto(s)
Edema Encefálico/fisiopatología , Encéfalo/fisiopatología , Infarto Cerebral/fisiopatología , Electroencefalografía , Adulto , Anciano , Encéfalo/diagnóstico por imagen , Edema Encefálico/diagnóstico por imagen , Infarto Cerebral/diagnóstico por imagen , Femenino , Humanos , Masculino , Persona de Mediana Edad , Factores de Tiempo , Tomografía Computarizada por Rayos X
4.
Rev. méd. Chile ; 127(12): 1469-74, dic. 1999. ilus, tab, graf
Artículo en Español | LILACS | ID: lil-258071

RESUMEN

Background: The temporomandibular joint is an oval fibrous plate that completely divides the joint and accommodates irregularities existent in the bone articular surfaces. Aim: To study the frequency of temporomandibular joint disk abnormalities among Colombian subjects. Material and methods: We studied 120 temporomandibular joint disks obtained from fresh cadavers arrived in the Instituto de Medicina Legal, in Cali Colombia. These were analyzed according to subjectÕs dental status and age. Results: Nineteen percent of disks had small erosions. In 7,5 percent of disks there were wider erosions or perforations. Twenty six percent of discs were very thin and this alteration was seen mostly in people aged 50 years or older. Conclusions: These results are intermediate between those who claim that disk perforations are rare and those who had shown tile opposite. The loss of dental pieces seems to be a risk factor leading to such disk perforation


Asunto(s)
Humanos , Disco de la Articulación Temporomandibular/anatomía & histología , Colombia , Arco Dental/anatomía & histología , Disco de la Articulación Temporomandibular/anomalías , Relación Céntrica
5.
CES odontol ; 12(1): 28-35, ene.-jun. 1999. ilus, tab, graf
Artículo en Español | LILACS | ID: lil-474816

RESUMEN

El propósito de este estudio fue determinar la posición del disco de la articulación temporomandibular (ATM), y la asociación del desplazamiento discal con el estado dental. Para este objetivo, se estudiaron 60 discos de la articulación temporomandibular, extraídos de especímenes cadavéricos frescos, mediante abordaje a través de la fosa craneal media. Con edades comprendidas entre 20 y 85 años, con estado dental catalogado como dentado, parcialmente dentado y edéntulo. Se encontró que la normal o superior se observó en 44 articulaciones (73.3 por ciento) y en 16 articulaciones (26.7 por ciento) el disco se halló desplazado. El mayor desplazamiento se encontró en los sujetos edéntulos (44.5 por ciento), mientras que en los especímenes dentados el desplazamiento se redujo al 15.7 por ciento...


Asunto(s)
Disco de la Articulación Temporomandibular , Técnicas de Movimiento Dental , Colombia , Odontología
6.
JAMA ; 281(16): 1520-7, 1999 Apr 28.
Artículo en Inglés | MEDLINE | ID: mdl-10227322

RESUMEN

CONTEXT: Meningococcal disease occurs worldwide, and serogroup B disease accounts for a large proportion of cases. Although persons younger than 4 years are at greatest risk for serogroup B meningococcal disease, vaccine efficacy has not been demonstrated in this age group. OBJECTIVE: To evaluate serum bactericidal activity (SBA) against homologous vaccine type strains and a heterologous Chilean epidemic strain of Neisseria meningitidis as a potential correlate for vaccine efficacy. DESIGN: Double-blind, randomized controlled trial conducted between March 14 and July 20, 1994. All blood samples were taken by December 1994. SETTING: Santiago, Chile, where a clonal serogroup B meningococcal disease epidemic began in 1993. PARTICIPANTS: Infants younger than 1 year (n = 187), children aged 2 to 4 years (n = 183), and adults aged 17 to 30 years (n = 173). INTERVENTION: Participants received 3 doses of outer-membrane protein (OMP) meningococcal vaccine developed in either Cuba or Norway or a control vaccine, with each dose given 2 months apart. Blood samples were obtained at baseline, prior to dose 3, and at 4 to 6 weeks after dose 3. MAIN OUTCOME MEASURE: Immune response, defined as a 4-fold or greater rise in SBA titer 4 to 6 weeks after dose 3 compared with prevaccination titer. RESULTS: Children and adult recipients of either meningococcal vaccine were more likely than controls to develop an immune response to the heterologous epidemic strain. After 3 doses of vaccine, 31% to 35% of children responded to the vaccine vs 5% to placebo; 37% to 60% of adults responded to vaccine vs 4% to placebo (P<.05 vs control for all). Infants, however, did not respond. In contrast, against homologous vaccine type strains, the response rate was 67% or higher among children and adults and 90% or higher among infants (P<.001 vs control for all). Subsequent SBA against 7 isogenic homologous target strains identified class 1 OMP as the immunodominant antigen. CONCLUSIONS: These data suggest that neither serogroup B OMP meningococcal vaccine would confer protection during a heterologous epidemic. However, epidemic strain-specific vaccines homologous for class 1 OMP are promising candidates for the control of epidemic serogroup B meningococcal disease.


Asunto(s)
Anticuerpos Antibacterianos/biosíntesis , Vacunas Bacterianas/inmunología , Neisseria meningitidis/clasificación , Neisseria meningitidis/inmunología , Adolescente , Adulto , Antígenos Bacterianos , Proteínas de la Membrana Bacteriana Externa , Actividad Bactericida de la Sangre , Preescolar , Chile , Método Doble Ciego , Femenino , Humanos , Epítopos Inmunodominantes , Lactante , Masculino , Infecciones Meningocócicas/prevención & control , Vacunas Meningococicas , Neisseria meningitidis/genética , Serotipificación
13.
Buenos Aires; Centro de Salud Mental nº 1; 1998. 51 p. (79367).
Monografía en Español | BINACIS | ID: bin-79367
14.
Buenos Aires; Centro de Salud Mental nº 1; 1998. 51 p.
Monografía en Español | LILACS-Express | BINACIS | ID: biblio-1202530
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