Which condition is listed as a possible contributor to vagal nerve inflammation leading to type 3 vagal indigestion?

• A. Peritonitis
• B. Nephritis
• C. Pneumonia
• D. Enteritis

Answer: (A)

Vagal indigestion reflects disruption of the vagus nerve signals to the stomach compartments, and type 3 specifically involves impaired outflow from the abomasum due to this neural disturbance. Inflammation of the peritoneum can irritate abdominal nerves, including the vagus, leading to neuritis or impaired vagal signaling to the abomasum. This produces reduced motility and outflow obstruction characteristic of type 3 vagal indigestion. The other conditions affect different organs (kidneys, lungs, or intestines) and don’t directly irritate the vagus nerve in a way that causes the abomasal outflow problems seen with type 3 vagal indigestion. Therefore, peritonitis is the most likely contributor.