156 



Scientific Proceedings (107). 



3. Pro- and anastalsis of the pars pylorica, alone, after extra- 

 gastric traumata before the stomach appears to settle down to 

 definite rhythmical contractions and is produced mechanically 

 by dividing or blocking the stomach at the junction of the pyloric 

 part and the fundus. It also follows thoracic division of the vagi. 



4. Pylorospasm, diffuse, with fundic relaxation resembling a 

 pylorofundic intussusception (see diagram). 



This fourth type has been observed repeatedly under experi- 

 mental traumatization of the gallbladder, duodenum, or appendix 

 and once in the human with evidence of appendical and gall- 

 bladder disease. It can be produced by direct stimulation of the 

 lesser curvature at the junction of the descending and horizontal 

 arms. The subjective evidence, associated with this motor state, 

 is anorexia, vomiting, and epigastric pain. The objective signs 

 are mass and tenderness over the stomach, present at times and 

 absent at other times. This form of motility, as appears to be the 

 rule with the reflex types, disappears with parietal peritoneal 

 irritation. 



Experimental data, to date, indicate the total hypermotility to 

 be of probable vagus and the pyloric hyperactivity, alone, to be 

 of probable vago-sympathetic origin. 



Schematic Representation of Diffuse Pyloric Spasm and Fundic Relaxa- 

 tion Resembling a Pyloro-fundic Intussusception. 



