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Vetdle Archive

Archive Case #136: Bovine Frothy Bloat

Cattle veterinary case - Easy - July 17, 2026

Clinical Clues

  1. A cow on lush legume pasture develops sudden left-sided abdominal distension and respiratory distress.
  2. The owner reports the problem appeared shortly after turnout onto a rich paddock.
  3. The left paralumbar fossa is markedly distended.
  4. Passing a stomach tube does not release a large volume of free gas.
  5. The syndrome is caused by stable foam trapping fermentation gases in the rumen.
  6. Frothy bloat is a classic pasture-associated emergency in cattle grazing legumes.

Diagnosis

Bovine Frothy Bloat

This case is most consistent with Bovine Frothy Bloat because the cow has acute pasture-associated left-sided distension with poor response to tubing. The most important clues are the legume grazing history and frothy gas trapping pattern, which make free-gas bloat from obstruction less likely.

Learning review

Review the case evidence

Use the paired clues to explain how the evidence in this cattle case supports the provided diagnosis, Bovine Frothy Bloat, then compare your reasoning with the case explanation.

Evidence checkpoints

Clues 1-2

  1. Clue 1: A cow on lush legume pasture develops sudden left-sided abdominal distension and respiratory distress.
  2. Clue 2: The owner reports the problem appeared shortly after turnout onto a rich paddock.

Clues 3-4

  1. Clue 3: The left paralumbar fossa is markedly distended.
  2. Clue 4: Passing a stomach tube does not release a large volume of free gas.

Clues 5-6

  1. Clue 5: The syndrome is caused by stable foam trapping fermentation gases in the rumen.
  2. Clue 6: Frothy bloat is a classic pasture-associated emergency in cattle grazing legumes.

Self-review prompts

  1. After clues 1-2, what evidence from this cattle case shaped your initial interpretation?
  2. When you compare clues 3-4 with clues 1-2, what changed in your reasoning about Bovine Frothy Bloat?
  3. How do clues 5-6 align with the case explanation for Bovine Frothy Bloat?

Educational Use

Vetdle archive cases are educational veterinary games for diagnostic reasoning practice. They do not provide veterinary advice, diagnosis, treatment, or professional medical guidance.