Physiologic features of the canine esophagus: effects of tranquilization on esophageal motility.

Esophageal motility was studied in clinically normal dogs. Mean values as to the time and pressure functions of esophageal peristaltic pressure curves are presented. Effects of two dosage levels of tranquilization on the time and pressure functions are reported.

Physiologic features of the canine esophagus: effect of modified Heller's esophagomyotomy.

The effects of the modified Heller's esophagomyotomy on function of the lower esophageal sphincter in the dog were studied. In normal dogs, this surgical procedure produced a les competent lower esophageal sphincter that still maintained the ability to prevent esophageal reflux.