Complete AV block in a neonatal foal suffering from nutritional myodegeneration

T. M. Conze, A. Falkenau, L. S. Goehring, A. May

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


This case report concerns a 1-day-old, full-term Quarter Horse colt presented due to a progressive inability to rise and nurse. Besides the general weakness, a marked bradycardia was evident, which was caused by a third-degree atrioventricular (AV) block. Subsequently, the diagnosis of acute nutritional myodegeneration (NMD) was made based on clinical signs, elevated muscle enzymes, ECG findings, as well as low serum selenium and vitamin E values. Despite intensive care and supportive therapy, the foal´s condition deteriorated, and euthanasia was elected. Necropsy confirmed the diagnosis of NMD and revealed diffuse necrosis and inflammatory infiltration of the skeletal and myocardial musculature, as well as the cardiac conduction system which might have resulted in complete AV block.

Original languageEnglish
Pages (from-to)e282-e288
JournalEquine Veterinary Education
Issue number7
StatePublished - Jul 2022

Bibliographical note

Publisher Copyright:
© 2021 The Authors. Equine Veterinary Education published by John Wiley & Sons Ltd on behalf of EVJ Ltd.


  • complete AV block
  • dysrhythmia
  • horse
  • nutritional myodegeneration
  • selenium
  • white muscle disease

ASJC Scopus subject areas

  • Equine


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