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Experience with whole-gut irrigation as a method of bowel preparation in eightyone patients is described. The mean (+/-S.D.) weight-gain during irrigation was 1-9 +/- 0-8 kg; potassium losses in the effluent after one hour (4-0 +/- 2-5 g) were not significantly altered by adding potassium chloride to the irrigant. Eight irrigations were unsatisfactory, three being due to unrecognised obstructive neoplasms. The method provided excellent preparation for colonoscopy and large-bowel resection with anastomosis and was well tolerated by the patients.
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