Tratamento de primeira linha da Síndrome do Intestino Irritável
A síndrome do intestino irritável (SII) é uma condição funcional intestinal comum, tratada principalmente por meio de medidas de estilo de vida, dietéticas e farmacológicas de primeira linha. O objetivo clínico é a redução dos sintomas globais da SII e da dor abdominal.
Alvo clínico
Melhoria dos sintomas globais da SII e da dor abdominal.
Sintomas globais da SII e dor abdominal
Abordagem de primeira linha
A abordagem estruturada de primeira linha começa com medidas de estilo de vida e orientação dietética. Além dessas bases, várias opções baseadas em evidências são sequenciadas de acordo com a escolha do paciente — com considerações específicas sobre o tipo de fibra, o momento e quais agentes evitar. O protocolo completo detalha quais opções testar primeiro, em que ordem e quando reavaliar.
References
DOI: 10.1136/gutjnl-2021-324598
- All patients with IBS should be advised to take regular exercise (recommendation: strong, quality of evidence: weak).
- First-line dietary advice should be offered to all patients with IBS (recommendation: strong, quality of evidence: weak).
- Soluble fibre, such as ispaghula, is an effective treatment for global symptoms and abdominal pain in IBS, but insoluble fibre (eg, wheat bran) should be avoided as it may exacerbate symptoms. Soluble fibre should be commenced at a low dose (3–4 g/day) and built up gradually to avoid bloating (recommendation: strong; quality of evidence: moderate).
- Probiotics, as a group, may be an effective treatment for global symptoms and abdominal pain in IBS, but it is not possible to recommend a specific species or strain. It is reasonable to advise patients wishing to try probiotics to take them for up to 12 weeks, and to discontinue them if there is no improvement in symptoms (recommendation: weak, quality of evidence: very low).
- Certain antispasmodics may be an effective treatment for global symptoms and abdominal pain in IBS. Dry mouth, visual disturbance and dizziness are common side effects (recommendation: weak, quality of evidence: very low).
- Peppermint oil may be an effective treatment for global symptoms and abdominal pain in IBS. Gastro-oesophageal reflux is a common side effect (recommendation: weak, quality of evidence: very low).
- Otherwise, treatment should commence with dietary therapies or first-line drugs, according to patient choice, with second-line drugs reserved for those whose symptoms do not improve with these measures, due to a combination of the potential side effects, as well as the costs, of some of these agents to the health service.
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