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Between August 1982 and November 1985, 100 patients underwent ileal "J" pouch-anal anastomosis (IPAA) at the University of Utah. All operations were performed in a standard fashion by a single surgeon. Seventy-eight patients were operated on for chronic ulcerative colitis and 22 for familial polyposis coli. Sixty of the patients were male and 40 were female with a mean age of 33.2 years and a range of 11-63 years. Mean +/- SEM operating time was 5.9 +/- 0.4 hours, blood loss was 666 +/- 49 ml, and total hospitalization was 10.1 +/- 0.3 days. No operative deaths occurred. The overall operative morbidity was 13% after IPAA. Clinical "pouchitis" was observed in 18 patients, all of whom were operated on for chronic ulcerative colitis. No patients had frank incontinence. Twenty per cent of patients experienced frequent nocturnal leakage in the early postoperative period with a significant improvement over the ensuing 6 months. Stool frequency at 1, 3, 6, 12, and 24 months was 7.5 +/- 0.2, 6.5 +/- 0.1, 6.2 +/- 0.3, 5.4 +/- 0.1, and 5.4 +/- 0.2, respectively. Stool frequency at 12 months correlated inversely with ileal pouch capacity and the diagnosis of familial polyposis. It is concluded that ileal pouch-anal anastomosis is a safe and effective operation for patients with chronic ulcerative colitis and familial polyposis coli.

At least nine different equations have been published for calculating metabolic expenditure by indirect calorimetry. This study examined the differences between equations when they are used for the nutritional assessment in an intensive care unit (ICU). Oxygen consumption and carbon dioxide production were measured in 36 ICU patients and used to calculate metabolic expenditure with the nine equations. The equations produced differences in metabolic expenditure which averaged from 0.8-96 kcal/day. The largest difference produced by any two of the nine equations was 189 kcal/day. Although differences in original stoichiometric data have resulted in numerous different equations for the calculation of metabolic expenditure, these differences are not clinically important. It makes little difference which equation is used for nutritional assessment in an ICU.