Question category: Gastroenterology
A 60 year old gentleman has just complete a course of coamoxiclav for a lower respiratory tract infection. He present very unwell with severe diarrhoea which is green in colour and is foul smelling. There is no blood or mucous. Samples are sent and a flexible sigmoidoscopy is performed and reveals a colitis. There is evidence of dilatation of his large bowel on abdominal x ray. How should you manage this patient?