Felis ISSN 2398-2950

Pleurisy

Synonym(s): Pleuritis

Contributor(s): David Godfrey, Kim Willoughby

Introduction

  • Rarely recognized condition in companion animal medicine.
  • Cause: inflammation of the pleura.
  • Signs: dyspnea, tachypnea, depression.
  • Diagnosis: thoracocentesis, radiography, cytology.
  • Treatment: symptomatic and manage underlying cause.
  • Prognosis: good to guarded depending on etiology.

Pathogenesis

Etiology

Primary causes

Secondary causes

Pathophysiology

  • Initially pleural inflammation results in a non-effusive pleuritis.
  • Pain is generated as the visceral and perietal pleural layers rub against one another during the respiratory cycle.
  • This is rarely recognized as signs are vague and it rapidly progresses to a serous pleuritis.
  • The pleura become thickened and the production of a fluid effusion helps the surfaces to glide more easily.
  • Bacterial pleuritis may progress to effusive pyothorax Pyothorax.
  • Following inflammation the pleura may become scarred and fibrosed.
  • The fibrosis makes the pleura rigid and this results in constrictive pleuritis in which the lungs are unable to expand normally.
  • If the pleura are drained in this situation rupture of the visceral pleura may occur rather than re-infection of the lung and a pneumothorax may occur Pneumothorax.

Diagnosis

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Treatment

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Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Fossum T W, Evering W N, Miller M W et al (1992) Severe bilateral fibrosing pleuritis associated with chronic chylothorax in five cats and two dogs. JAVMA 201 (2), 317-324 PubMed.


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