Which vagal indigestion type is primarily managed with a rumen fistula?

• A. Type 1
• B. Type 2
• C. Type 3
• D. Type 4

Answer: (A)

The key idea is that venting ruminal gas directly addresses the problem in this vagal indigestion type. When eructation fails, gas builds up in the rumen, causing marked distension and respiratory compromise. Creating a rumen fistula provides a controlled outlet to release that gas and decompress the rumen, which is the most immediate and effective way to relieve the distress in this specific type.

Other types involve different disturbances in the reticulorumen or abomasum, such as poor transport of ingesta or distal outflow problems, where simply venting gas from the rumen doesn’t fix the underlying issue. Those forms require approaches targeted to the specific site of dysfunction, not just decompression of the rumen.