RESUMO
Distal esophageal spasm is a rare motility disorder presenting principally with nonobstructive dysphagia and noncardiac chest pain. In symptomatic patients, the manometric diagnosis is made when >10% of the wet swallows have simultaneous and/or premature contractions intermixed with normal peristalsis. We characterize manometry and barium as complementary diagnostic approaches, and given the intermittent nature of the disorder, one should be always aware that it is almost impossible to rule out spasm. Treatment is difficult; we propose an approach beginning with the least invasive intervention.
Assuntos
Espasmo Esofágico Difuso/complicações , Espasmo Esofágico Difuso/terapia , Antidepressivos Tricíclicos/uso terapêutico , Radioisótopos de Bário , Toxinas Botulínicas/uso terapêutico , Bloqueadores dos Canais de Cálcio/uso terapêutico , Acalasia Esofágica/complicações , Espasmo Esofágico Difuso/diagnóstico , Refluxo Gastroesofágico/complicações , Humanos , Dinitrato de Isossorbida/uso terapêutico , Manometria , Mentha piperita , Miotomia , Doadores de Óxido Nítrico/uso terapêutico , Inibidores da Fosfodiesterase 5/uso terapêutico , Óleos de Plantas/uso terapêutico , Prevalência , Inibidores da Bomba de Prótons/uso terapêutico , Terminologia como AssuntoRESUMO
Barium-137m availed from a (137)Cs/(137m)Ba generator is an attractive industrial radiotracer for liquid flow rate measurement owing to its short half-life (T(1/2)=2.5 min) and emission of highly energetic gamma radiation (E(γ)=661.7 keV). Ammonium molybdophosphate (AMP) impregnated alumina microspheres (AMP-Al(2)O(3)), an engineered form of sorbent material was synthesized by Gel Entrapment Technique (GET). The utility of the material in the preparation of (137)Cs/(137m)Ba generator was evaluated. Various experimental parameters were optimized for efficient retention of (137)Cs and selective elution of (137m)Ba. A chromatographic 0.74 GBq (20 mCi) (137)Cs/(137m)Ba generator was developed using this material and its performance was evaluated for 6 months. Barium-137m could be eluted from the generator using 0.1 M NH(4)NO(3)+0.5 M HNO(3) solution with >80% yield and with acceptable radionuclidic purity suitable for industrial radiotracer investigations.
Assuntos
Óxido de Alumínio/química , Radioisótopos de Bário/química , Radioisótopos de Césio/química , Cromatografia Líquida/instrumentação , Microesferas , Molibdênio/química , Ácidos Fosfóricos/química , Geradores de Radionuclídeos/instrumentação , Adsorção , Desenho de Equipamento , Traçadores RadioativosRESUMO
El patrón en mosaico de la mucosa colónica es un hallazgo radiológico poco frecuente, que se ha descrito previamente en los estudios de enema de bario. Describimos la apariencia de este patrón en la TC en un paciente con vólvulo de ciego (AU)
A polygonal mosaic-like pattern of colonic mucosa is a rare radiological finding that was first described in studies using barium enema. We describe the CT findings of this pattern in a case of cecal volvulus (AU)