Oesophago-antrostomy with and without pyloroplasty - radiological and manometric findings in the chacma baboon.

Oesophago-antrostomy with and without pyloroplasty, and with preservation of Latarjet's anterior nerve with an intact pylorus, was studied in chacma baboons. Radiological and manometric studies showed that pyloroplasty is unnecessary after oesophago-antrostomy with an incidental vagotomy and that pyloroplasty in fact interferes with the muscular rhythm of the pyloric sphincteric cylinder.