Effect of metoclopramide on the lower oesophageal sphincter. An experimental study in dogs.

Oesophageal, lower oesophageal sphincter and gastric fundal pressures were measured with a triple lumen, open tip-infused catheter in dogs before and after intravenous injection of metoclopramide. The mean basal value of the lower oesophageal sphincter pressure was 5.3+/-2.7 mmHg. Metoclopramide injection caused a significant increase in this pressure. The effect of metoclopramide started immediately and disappeared about one hour after intravenous injection.