Effect of various pyloroplasties on fecal fat excretion in dogs and humans.

Fecal fat excretion has been measured both before and after truncal vagotomy and pyloroplasty in patients with chronic duodenal ulcer, and pyloroplasty alone, in dogs. In 13 patients the mean increase in fecal fat after truncal vagotomy and Heineke-Mikulicz pyloroplasty was 2.34 g/24 hr. After truncal vagotomy and Finney pyloroplasty in 12 patients the increase was similar and was 3.09 g/24 hr. Fecal fat was also measured before and after a 3-cm, a 6-cm Heineke-Mikulicz, and a Finney type of pyloroplasty in dogs. The area resulting from the pyloroplasties was measured. Pyloroplasty by itself resulted in a significant increase in fecal fat but no correlation could be found between the magnitude of the increase and the area that resulted from the pyloroplasties.