Sick sinus syndrome in the West Highland white terrier

A Moneva-Jordan, Brendan Corcoran, Anne French, J. Dukes-McEwan, M Martin, V. Luis Fuentes, L.S. Hitchcock, J. Bonagura

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Sick sinus syndrome is a clinical term used to describe the clinical signs of sinus node dysfunction. This paper describes the clinical data from nine West Highland white terriers, eight females and one male, in which a diagnosis of sick sinus syndrome was made. The most common clinical signs were episodic weakness and presyncope. Electrocardiographic findings included sinus bradycardia, sinus arrest with or without escape complexes, disturbances of atrioventricular conduction, paroxysmal supraventricular tachycardia, or some combination of these dysrhythmias. The main radiographic changes were mild right-sided cardiomegaly in five cases, and a slight increase in bronchial and interstitial markings in four, but there was no evidence of congestive heart failure in any of the dogs. Echocardiography revealed mild to moderate mitral endocardiosis in three cases with no other significant abnormalities. The dogs' responses to parenteral atropine were variable and were not necessarily related to their response to oral anticholinergic agents. Five of the dogs were initially treated with propantheline bromide, but in only two of them were the clinical signs controlled in the long term. Six of the dogs were successfully treated by the implantation of a transvenous pacemaker.
Original languageEnglish
Pages (from-to)142-7
Number of pages6
JournalVeterinary Record
Issue number5
Publication statusPublished - 3 Feb 2001

Keywords / Materials (for Non-textual outputs)

  • Animals
  • Anti-Arrhythmia Agents
  • Atropine
  • Bradycardia
  • Cardiomegaly
  • Dog Diseases
  • Dogs
  • Echocardiography
  • Electrocardiography
  • Female
  • Male
  • Pacemaker, Artificial
  • Radiography, Thoracic
  • Retrospective Studies
  • Sick Sinus Syndrome
  • Treatment Outcome


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