Avaliação da eficácia e do grau de adesão ao uso prolongado de fibra dietética no tratamento da constipação intestinal funcional
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Data
2010-04-01
Autores
Machado, Wellington Monteiro [UNESP]
Capelari, Sílvia Maria
Título da Revista
ISSN da Revista
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Editor
Pontifícia Universidade Católica de Campinas
Resumo
OBJETIVO: Avaliar o grau de adesão e a eficácia da fibra dietética no tratamento da constipação intestinal funcional. MÉTODOS: Estudo clínico longitudinal, envolvendo 59 indivíduos, 54 mulheres e 5 homens, idade média de 46 anos (variação: 18-74 anos), com diagnóstico de constipação intestinal funcional. Após regularização do hábito intestinal, com a introdução de fibra dietética, era recomendado aos pacientes manter a dieta com fibra e retornar quatro meses depois, a fim de ser verificada a continuidade da eficácia e o grau de adesão ao seu uso. Associação entre adesão e eficácia foi pesquisada pelo teste exato de Fisher. RESULTADOS: Nove pacientes abandonaram o estudo e 50 continuaram. Destes, 32 mantiveram hábito intestinal satisfatório e a constipação recorreu em 18. Naqueles com manutenção do hábito intestinal, dezesseis mantiveram a ingestão de fibra recomendada, quatro aumentaram, nove reduziram e três interromperam. Nos casos com recorrência do sintoma, a quantidade de fibra foi mantida em três, aumentada em um, diminuída em três e suspensa em onze. Foi encontrada associação estatisticamente significante entre adesão e eficácia (p=0,008). CONCLUSÃO: A eficácia da fibra dietética mostrou-se moderada, ocorrendo benefício em 64% dos casos. A perda de adesão foi grande, mais da metade dos indivíduos avaliados (52%). Tais resultados sugerem a necessidade de novas estratégias, visando garantir maior fidelidade à terapêutica com fibra e com isto melhorar seus resultados no tratamento da constipação intestinal.
OBJECTIVE: The objective of this study was to evaluate the adherence to and efficacy of dietary fiber in the treatment of functional constipation. METHODS: This is a longitudinal clinical study involving 59 subjects, 54 women and 5 men, aged 18 to 74 years, mean age of 46 years, with functional constipation. Once the bowel movements became regular with the use of dietary fiber, subjects were instructed to maintain the fiber-rich diet for four months in order to determine if the efficacy continued over time and the degree of adherence to its use. The association between adherence and efficacy was investigated by the Fisher's exact test. RESULTS: Although nine individuals abandoned the study, 50 returned. From these, 32 sustained normal bowel movements and 18 had recurrence of the constipation. In the first group, 16 continued consuming the same amount of fiber, four increased, nine reduced and three stopped taking it. In the group with recurrence, three maintained the same amount of fiber, one increased, three reduced and eleven stopped taking it. There was a significant statistical association between adherence and efficacy (p=0.008). CONCLUSION: The long-term efficacy of dietary fiber for the treatment of constipation was moderate (64%) and treatment drop-out rate was high (52%). These results suggest the need of new strategies that promote greater fidelity to fiber therapy, thereby improving the efficacy of constipation treatment.
OBJECTIVE: The objective of this study was to evaluate the adherence to and efficacy of dietary fiber in the treatment of functional constipation. METHODS: This is a longitudinal clinical study involving 59 subjects, 54 women and 5 men, aged 18 to 74 years, mean age of 46 years, with functional constipation. Once the bowel movements became regular with the use of dietary fiber, subjects were instructed to maintain the fiber-rich diet for four months in order to determine if the efficacy continued over time and the degree of adherence to its use. The association between adherence and efficacy was investigated by the Fisher's exact test. RESULTS: Although nine individuals abandoned the study, 50 returned. From these, 32 sustained normal bowel movements and 18 had recurrence of the constipation. In the first group, 16 continued consuming the same amount of fiber, four increased, nine reduced and three stopped taking it. In the group with recurrence, three maintained the same amount of fiber, one increased, three reduced and eleven stopped taking it. There was a significant statistical association between adherence and efficacy (p=0.008). CONCLUSION: The long-term efficacy of dietary fiber for the treatment of constipation was moderate (64%) and treatment drop-out rate was high (52%). These results suggest the need of new strategies that promote greater fidelity to fiber therapy, thereby improving the efficacy of constipation treatment.
Descrição
Palavras-chave
Constipação intestinal, Fibras na dieta, Eficácia da dieta com fibra, Hábitos alimentares, Dietary fiber, Constipation, Dietary fiber efficacy, Food habits
Como citar
Revista de Nutrição. Pontifícia Universidade Católica de Campinas, v. 23, n. 2, p. 231-238, 2010.