Broncho-oesophageal fistula [BOF] secondary to missing partial denture in an alcoholic in a low resource country

The clinical course of a missing partial denture with secondary BOF in an alcoholic is presented. In the index case we report an exceptional clinical course of a patient who did not ascribe his symptoms to his [missing] dentures for several years, the odontologist who replaced an unrecovered denture, and the generalist who administered the barium swallow in an unsuspected BOF. Preoperative optimization of the patient was by blenderized local feeds through a feeding tube gastrostomy and by chest physiotherapy. Extraction of the denture and closure of fistula were done through a right thoracotomy. The importance of a high index of clinical suspicion of BOF in a low resource setting to avoid the morbidity and mortality associated with missing dentures is discussed. Odontologists, caregivers and clinicians must educate patients on the hazards of missing dentures and cases of missing / lost dentures should be adequately investigated / explored in the patient's history and clinical assessment before they are replaced

A barium chemobezoar in an infant / Quimobezoar de bario en un neonato

A case report is presented of an infant who developed a large barium concretion proximal to a jejunal anastomosis. A brief literature review outlines the issues involved in the indications for, and choice of, contrast material for use in the precise radiological diagnosis of upper intestinal obstruction in infants.

Se presenta el reporte de un caso de un neonato que desarrolló una concreción grande de bario cercana a una anastomosis yeyunal. Una breve revisión de la literatura esboza los problemas involucrados en las indicaciones y selección del material de contraste para uso en un diagnóstico radiológico preciso de la obstrucción intestinal superior en los neonatos.

Reaçäo de hipersensibilidade ao contraste com bário utilizado nos exames radiológicos do trato gastrointestinal na infância: relato de um caso e revisäo de literatura / Barium hipersensibility reaction in radiologic examination of the gastrointestinal tract in infants

O presente trabalho relata um caso de hipersensibilidade ao bário em lactente que realizou esofagograma e apresenta revisäo da literatura sobre o assunto. Reaçöes alérgicas com diferentes níveis de gravidade foram descritas por vários autores, os quais acentuaram a necessidade de pesquisar antecedentes alérgicos nos pacientes que ainda realizaräo exames radiológicos contrastados com bário. Os autores também salientam a necessidade de medicaçäo antialérgica e material para reanimaçäo cardiorrespiratória nas salas de exames

A depressäo alastrante sob o efeito de bário / Spreading depression under the effect of barium

Apresentamos aqui os resultados de medidas ópticas e eletro-fisiológicas obtidas durante a ocorrência de ondas de depressão alastrante (DA) na retina de galinha in vitro. Adquirindo simultaneamente os sinais supracitados foi possível analisar a sua relaçäo temporal e espacial durante a DA. As ondas foram elicitadas sob condiçöes de controle e com a aplicaçäo de cloreto de bário à soluçäao de perfusäo. Algumas das características mais afetadas foram a variaçäo lenta do potencial extra-celular, a velocidade e o valor absoluto do pico da derivada do sinal de tensäo. A onda óptica intrínseca (IOS) também foi afetada. Apesar disso, o pico da derivada (do potencial) ocorreu senpre no momento da chegada da onda óptica à ponta da micropipeta. Como o bário é um bloqueador de células gliais, os resultados dos experimentos evidenciam a relaçäo entre a despolarizaçäo glial e outros fenômenos comcomitantes tais como a onda de tensäo e o IOS, o que deverá ser objeto de investigaçöes futuras

Abstract - ln this paper we present the results of optical and electro-physiological measurements carried out during the occurrence of spreading depression waves in the in vitro chicken retina. Simultaneously acquiring the optical and electrical signals, we could verify the temporal and spatial relationship between them. The waves have been elicited under control conditions and with the application of barium chloride to the perfusing solution. Some of the most affected features of the waves were the negative slow potential shift, the velocity and the peak absolute value of the derivative of the potential wave. The intrinsic optical signal (IOS) was also affected. Nevertheless, the peak value ofthe derivative occurred always when the !OS was exactly on the tip ofthe micropipette. As longas bariurn is a K-channel blocker specific for glial cells, the results of these experiments pennit to conclude that the relationship between the glial depolarization and the concornitant phenomena such as the potential wave and the !OS exists and should be the subject offurther investigation