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Surgical complications
Unanticipated hyperkalaemia
  1. Polly Taylor,
  2. Caroline Prymak,
  3. John Hird,
  4. Sophie Adamantos,
  5. Paul MacFarlane and
  6. Will McFadzean
  1. Taylor Monroe, Gravel Head Farm, Downham Common, Little Downham, Cambridgeshire CB6 2TY
  2. Prymak Referrals, 24 Kingsclear Park, Camberley, Surrey GU15 2LS
  3. Lower Kebroyd Hall, Triangle, Sowerby Bridge, West Yorkshire HX6 3HT
  4. Langford Vets, University of Bristol, Langford House, Langford, Bristol BS40 5DU
  5. Cave Veterinary Specialists, George’s Farm, West Buckland, Somerset TA21 9LE
  1. e-mail: lvpdm{at}bristol.ac.uk

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Over the last three years we have encountered more than 20 dogs that have developed unanticipated intraoperative hyperkalaemia. Most of these incidents have been diagnosed after at least 120 minutes of anaesthesia, and typically present as acute onset brady-dysrhythmias, sometimes with AV blocks, on some occasions with spiked T waves. In a small number of cases, the cardiovascular impairment has been severe, with one dog undergoing cardiac arrest. Where available, capnography and blood gas analysis has usually revealed a moderate acidaemia, with either a respiratory (hypercapnia), metabolic or mixed cause.

Restoration of …

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