RESUMEN
This work aimed at evaluating the intragastric distribution of food in patients with GERD and dyspepsia and its relationship to acidic reflux episodes. Gastric emptying and food retention in the proximal stomach were evaluated by scintigraphy in 12 healthy subjects and 19 patients with GERD and dyspepsia after a liquid test meal. Patients also underwent 24-hr esophageal pH monitoring, which included a 2-hr postprandial period following a similar test meal. Total gastric emptying was similar in patients and controls, whereas proximal gastric retention (AUCprox/AUCtot) was significantly decreased in patients (mean +/- SD: 0.48 +/- 0.07 vs. 0.56 +/- 0.06; P = 0.02). Within the GERD-dyspepsia group, a significant negative correlation was found between proximal gastric retention and the number of acidic reflux episodes. We concluded that abnormally decreased retention of gastric contents in the proximal stomach after a liquid meal may contribute to the pathogenesis of acidic reflux episodes in patients with GERD and dyspepsia.
Asunto(s)
Dispepsia/fisiopatología , Ácido Gástrico/fisiología , Vaciamiento Gástrico/fisiología , Reflujo Gastroesofágico/fisiopatología , Estómago/fisiopatología , Adulto , Femenino , Alimentos , Humanos , Masculino , Persona de Mediana EdadRESUMEN
Racional - A doença de Crohn e a retocolite ulcerativa idiopática säo consideradas pouco freqüentes nos países em desenvolvimento, sendo escassos os estudos sobre a sua ocorrência no Brasil. Objetivos - Estudar a freqüência de admissäo de casos da doença de Crohn e da retocolite ulcerativa inespecífica em um hospital universitário ao longo de 20 anos (1980-99) e descrever características demográficas e clínicas desses casos. Métodos - Calculou-se a freqüência de admissäo de casos da doença de Crohn e da retocolite ulcerativa inespecífica de janeiro de 1980 a dezembro de 1999 e analisaram-se todos os casos destas doenças admitidos nos últimos 10 anos desse período. Resultados - No período estudado, registraram-se 257 casos novos, sendo 126 da doença de Crohn e 131 da retocolite ulcerativa inespecífica. A freqüência de admissäo de casos de ambas as doenças aumentou de 40 para 61 casos/10.000 atendimentos, do primeiro para o segundo qüinqüênio, com menor crescimento subseqüente, sendo que a doença de Crohn tornou-se, gradualmente, mais freqüente que a retocolite ulcerativa inespecífica. Em ambas as doenças, houve predomínio de casos do gênero feminino, na faixa etária entre 20 e 50 anos, da cor branca, do estado civil casado e de näo-tabagistas. Ambas as doenças apresentaram-se com os sintomas digestivos próprios e näo houve diferenças entre elas quanto às freqüências de manifestaçöes sistêmicas e extra-intestinais (29,5 por cento vs 23,3 por cento), incluindo as tromboembólicas (5,9 por cento vs 5,5 por cento). Na doença de Crohn, 59,2 por cento dos casos apresentaram complicaçöes (obstruçäo e/ou perfuraçäo), enquanto que 53,7 por cento dos casos de retocolite ulcerativa inespecífica foram de formas mais graves. Nos casos de doença de Crohn com obstruçäo, o tabagismo foi significativamente mais freqüente que nas formas näo-complicadas. Na retocolite ulcerativa inespecífica, as manifestaçöes sistêmicas e as extra-intestinais, bem como o acometimento de todo o cólon, foram significativamente mais freqüentes nas formas mais graves. Conclusöes - Houve aumento da freqüência das doenças inflamatórias intestinais, com a doença de Crohn tornando-se mais comum que a retocolite ulcerativa inespecífica. Tanto uma como outra das afecçöes, apresentaram-se com as características habituais, destacando-se o predomínio das formas mais graves
Asunto(s)
Humanos , Masculino , Femenino , Recién Nacido , Lactante , Preescolar , Niño , Adolescente , Adulto , Persona de Mediana Edad , Colitis Ulcerosa , Enfermedad de Crohn , Brasil , Colitis Ulcerosa , Enfermedad de Crohn , Estudios de Seguimiento , Incidencia , Prevalencia , Factores de RiesgoRESUMEN
BACKGROUND: Crohn's disease and ulcerative colitis are regarded as uncommon in developing countries, but studies on their occurrence in Brazil are scarce. Aims - To determine the occurrence of Crohn's disease and ulcerative colitis in a Brazilian university hospital throughout a 20-year period, and analyze the demographical, clinical and evolutive features of these cases. METHODS: The frequencies of new cases of Crohn's disease and ulcerative colitis admitted from January 1980 up to December 1999 were calculated and a descriptive analysis of the features of all cases seen from January 1990 up to December 1999 was performed. RESULTS: A total of 257 new cases (126 with Crohn's disease and 131 with ulcerative colitis) was recorded. The frequencies of admissions for both Crohn's disease and ulcerative colitis have increased progressively from 40 up to 61 cases/10.000 new admissions and Crohn's disease gradually became more common than ulcerative colitis. For both diseases, there was predominance of women, age at admission in the range of 30-40 years, Caucasian origin, married state and non-smokers. Digestive symptoms presented were similar to those already described for both diseases and there were no differences between Crohn's disease and ulcerative colitis regarding the frequencies of general complaints and extra-intestinal manifestations (29.5% vs 23.3%), including thromboembolism (5.9% vs 5.4%). Obstruction and/or perforation were seen in up to 59.2% of Crohn's disease cases, whereas 53.7% of all ulcerative colitis cases presented as severe forms. In Crohn's disease cases with obstruction, smoking was significantly more common than in non-complicated cases. In ulcerative colitis cases of increased severity, general complaints, extra-intestinal manifestations and pancolitis were significantly more frequent than in less severe forms. CONCLUSIONS: For the last 20 years, there have been an increased frequency of admission of inflammatory bowel diseases, and Crohn's disease have become more prevalent than ulcerative colitis. Demographical, clinical and evolutive features of these diseases seems to be similar to those already described, but there seems to be a predominance of more severe forms of both diseases.