Exercise intolerance


  • 9 year old FN Collie who has developed exercise intolerance. History of diaphragmatic hernia repair years ago
  • She will be need to lie down during exercise (can’t move further even though really wants to get up) and pants heavily at this time. Also panting more at rest. 
  • Bradycardic on PE, HR around 40-50 but can increase to 60+ when stimulated
  • Bloods, thoracic and abdominal xrays, abdominal scan (done by inhouse vet) and echo all wnl 
  • ECG showed sinus bradycardia with deep t waves, is this artefact or relevant? 
    • 9 year old FN Collie who has developed exercise intolerance. History of diaphragmatic hernia repair years ago
    • She will be need to lie down during exercise (can’t move further even though really wants to get up) and pants heavily at this time. Also panting more at rest. 
    • Bradycardic on PE, HR around 40-50 but can increase to 60+ when stimulated
    • Bloods, thoracic and abdominal xrays, abdominal scan (done by inhouse vet) and echo all wnl 
    • ECG showed sinus bradycardia with deep t waves, is this artefact or relevant? 
    • Could this be a sick sinus syndrome? no tachycardia noted. 
    • Holter is the next step, is there anything that should be considered prior to this?

     


2 responses to “Exercise intolerance”

  1. Hi
    Based on this ECG I would

    Hi

    Based on this ECG I would look for right heart disease or Hyperkalemia first. The recording does not really support the theory of Sick Sinus Syndrome since the P waves look normal. However, a Holter ECG would be necessary to rule out SSS  – and I would recommend a Holter anyway if echo and potassium are normal.

    Hope that helps!

    Peter

     

     

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