Diseases of the Forestomachs Practice Test

Vagal indigestion types describe where fore-stomach flow is impaired due to vagal nerve dysfunction. Type II specifically means omasal transport failure—the movement of ingesta from the reticulorumen into the omasum is impaired, so material accumulates in the fore-stomach and motility forward is reduced. This differs from the gas-bas events of Type I, where the problem is failure to eructate (free gas bloat); from Type III, where the obstruction is at the abomasal outflow; and from intestinal ileus, which is a small-intestinal motility issue not related to fore-stomach transport. Therefore, the best description for Type 2 vagal indigestion is omasal transport failure.