RESUMEN
Management strategies for optimal stroke prevention depend on the cause of threatened stroke. We know relatively little about the etiology of stroke in Mexican Americans, who make up one quarter of the population in Texas. A retrospective case series of 159 consecutive patients hospitalized in San Antonio, Tex, for acute, first-ever stroke compared risk factors, features, and causes of stroke between Mexican Americans and whites. Mexican Americans who had strokes were significantly younger than whites and had diabetes mellitus more often. Intracerebral hemorrhage and lacunar infarcts occurred often in Mexican Americans. Ethnicity appeared to be an independent risk factor for lacunar infarction. Mortality and functional outcome at the time of hospital discharge were similar in Mexican Americans and whites. Intrinsic small-vessel disease causing lacunar infarcts and intracerebral hemorrhage accounts for about one half of strokes in Mexican Americans. Stroke among Mexican Americans in South Texas has a distinctive profile with implications for its prevention.
Asunto(s)
Trastornos Cerebrovasculares/etnología , Americanos Mexicanos , Anciano , Isquemia Encefálica/etnología , Infarto Cerebral/etnología , Trastornos Cerebrovasculares/complicaciones , Complicaciones de la Diabetes , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Factores de Riesgo , TexasRESUMEN
Idiopathic brachial plexus neuropathy (BPN) is an immune-mediated disorder characterized by an acute onset of painful weakness in one or both upper extremities. The course is usually monophasic with gradual improvement over months; however, occasionally BPN can recur. Electrophysiologic studies suggest the pathogenesis is primarily axonal in the majority of cases. We describe an unusual case of BPN in which the patient had a chronic and relapsing course of painless weakness associated with conduction blocks and other electrophysiologic features of demyelination across the brachial plexus. The patient improved following treatment with intravenous immunoglobulin. The neuropathy falls within the spectrum of chronic inflammatory demyelinating polyneuropathy and multifocal motor neuropathy.
Asunto(s)
Plexo Braquial , Conducción Nerviosa , Potenciales de Acción , Enfermedad Crónica , Humanos , Inmunoglobulinas Intravenosas/uso terapéutico , Masculino , Persona de Mediana Edad , Enfermedades del Sistema Nervioso/fisiopatología , Enfermedades del Sistema Nervioso/terapia , Recurrencia , Nervio Sural/fisiopatologíaRESUMEN
Small water utilities often have difficulty operating complicated treatment processes. The advanced oxidation process investigated here is simple, involving only a pump to add hydrogen peroxide and a power supply for the ultraviolet lamps, and the process does not produce any solid residuals. The results of these studies show that a photon-flux-driven pseudo-first-order model (known as the Prengle-Shimoda rate model) could be used to predict the destruction of total organic carbon, dissolved organic halogen, and dissolved organic halogen precursors.