Abstract
Under the conditions of this experimental study we found that there was only a moderate increase in Heidenhain pouch secretion following a low antral gastrojejunostomy if the stoma was constructed 2 cm. in diameter. If, however, the gastrojejunostomy stoma was constructed 4 cm. in diameter, there was a marked increase. The average increase in secretion of free hydrochloric acid from the Heidenhain pouch when stimulated by a 2 cm. diameter gastrojejunostomy stoma was 43.3 per cent. For a 4 cm. stoma the similar average was 144.9 per cent, or over three times as much. If the 34.3 per cent increase produced by multiple operations alone is considered, this difference is even greater.
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