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Purpura hemorrhagica

Purpura hemorrhagica is caused by hypersensitivity to proteins following infection, eg:

  • Streptococcus equi
  • Equine influenza virus
  • Local wound infection
  • Rhodococcus equi
  • Streptococcus equi zoopeidemicus
  • Equine herpes virus 1 Idiopathic

Prognosis is moderate if mild, but may be protracted course. Grave if severe (high mortality), if diarrhea or respiratory distress present; if refractory to initial treatment.

Updated by Jamie Prutton BSc(Hons) BVSc DipACVIM DipECEIM MRCVS

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Equine viral arteritis

EVA is a contagious disease of equids associated with a panvasculitis and viral replication in cells of blood vessel walls and reticuloendothelial system. Infection is caused by the equine arteritis virus (EAV) and is spread by the respiratory or venereal route.

Updated by Peter Timoney MVB MS PhD FRCVS

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Annular ligament transection / desmotomy

Used to relieve constriction of the palmar/plantar annular ligament (PAL) to improve circulation and gliding movement of flexor tendons. The PAL may or may not be thickened depending on the specific pathogenesis of each case. There are 3 commonly used techniques: closed, open or tenoscopic.

Updated by Graham Murnoe BVSc(Hons) PhD CertEO DESM DipECVS FRCVS

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