Type III vagus indigestion causes hypokalemia, hypochloremia and metabolic alkalosis. Intravenous fluid administration can be used to correct these abnormalities. A left paralumbarfossaceliotomy and rumenotomy allows the clinician to administer mineral oil directly into the abomasum via the omasal-abomasal orifice, or removal of impacted abomasalingesta. Severe cases of abomasalimpaction may require an abomasotomy via a right paracostalapproach, but affected animals have a poor prognosis.