Influence of the Length of Heineke-Mikulicz Pyloroplasty on the Area of Gastric Outlet

Abstract

Using agar casts of human post-mortem stomachs we have shown that (1) A 4-cm Heineke-Mikulicz (H-M) pyloroplasty increases the diameter of the narrowest area of the pylorus in every case. (2) Further increase to an 8-cm pyloroplasty leads to a further comparable increase in the size of the outlet. (3) The distortion caused by H-M pyloroplasty does not reduce the mean cross-sectioned area of the pyloric canal. (4) The narrowest area of the outlet appears to remain at the pylorus. These findings and their significance in gastric emptying are briefly discussed.

Comparison of ultrasonographic characteristics of the gastroduodenal junction during pyloroplasty performed laparoscopically or via conventional abdominal surgery in dogs

“…It is possible that deformities in the gastroduodenal area could facilitate duodenogastric reflux in some dogs. 26 In other studies, [27][28][29] it has been documented that gastrointestinal surgery disturbs gastrointestinal peristalsis. It is possible that an increase in duodenogastric reflux was a transient effect attributable to the pyloroplasty.…”