Spontaneous pneumomediastinum in three adult horses

Sarah Smith*, Celia M. Marr

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review


The report describes the diagnosis and management of spontaneous pneumomediastinum in three horses which were presented with acute-onset increased respiratory effort. Pneumomediastinum was evident radiographically without evidence of internal or external trauma. Two horses had no obvious inciting cause and one horse had chronic interstitial pneumonia. All horses developed echocardiographic changes consistent with right heart dysfunction. Radiographic evidence of pneumomediastinum resolved in 14-21 days along with all other clinical abnormalities. Despite the severity of the initial clinical signs, all cases reported made a rapid and complete recovery, suggesting that, as in human beings, spontaneous pneumomediastinum in horses is a benign condition with a good prognosis.

Original languageEnglish
Article numbere000732
JournalVeterinary Record Case Reports
Issue number2
Publication statusPublished - 11 Apr 2019


  • pulmonary/thoracic medicine
  • respiratory disease
  • thoracic medicine


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