Resolution of sustained narrow complex ventricular tachycardia and tachycardia-induced cardiomyopathy in a Quarter Horse following quinidine therapy

Joshua A Stern, Yamir R. Doreste, Susan Barnett, Sunshine M. Lahmers, Ryan D. Baumwart, Kathy K. Seino, John D. Bonagura

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Sustained narrow-QRS tachycardia of three months duration and left ventricular systolic dysfunction were identified in a fifteen-year-old Quarter Horse. No underlying cause for the tachyarrhythmia was found and no predisposing structural cardiac lesions were evident by echocardiography. Intravenous diltiazem and lidocaine were administered without achieving successful conversion of the arrhythmia. Oral quinidine therapy converted the tachyarrhythmia to sinus rhythm. Ventricular systolic dysfunction and chamber dilatation subsequently resolved. As with other species, echocardiographic features of dilated cardiomyopathy can be tachycardia-induced and may resolve following successful control of heart rate and rhythm.

Original languageEnglish (US)
Pages (from-to)445-451
Number of pages7
JournalJournal of Veterinary Cardiology
Volume14
Issue number3
DOIs
StatePublished - Sep 2012
Externally publishedYes

Fingerprint

quinidine
Quarter Horse
Quinidine
cardiomyopathy
Ventricular Tachycardia
Cardiomyopathies
Tachycardia
Horses
therapeutics
Ventricular Dysfunction
lidocaine
Diltiazem
arrhythmia
echocardiography
Dilated Cardiomyopathy
Left Ventricular Dysfunction
Therapeutics
Lidocaine
sinuses
lesions (animal)

Keywords

  • Arrhythmia
  • Equine
  • Quinidine
  • Systolic dysfunction
  • Tachycardiomyopathy

ASJC Scopus subject areas

  • veterinary(all)
  • Physiology

Cite this

Resolution of sustained narrow complex ventricular tachycardia and tachycardia-induced cardiomyopathy in a Quarter Horse following quinidine therapy. / Stern, Joshua A; Doreste, Yamir R.; Barnett, Susan; Lahmers, Sunshine M.; Baumwart, Ryan D.; Seino, Kathy K.; Bonagura, John D.

In: Journal of Veterinary Cardiology, Vol. 14, No. 3, 09.2012, p. 445-451.

Research output: Contribution to journalArticle

Stern, Joshua A ; Doreste, Yamir R. ; Barnett, Susan ; Lahmers, Sunshine M. ; Baumwart, Ryan D. ; Seino, Kathy K. ; Bonagura, John D. / Resolution of sustained narrow complex ventricular tachycardia and tachycardia-induced cardiomyopathy in a Quarter Horse following quinidine therapy. In: Journal of Veterinary Cardiology. 2012 ; Vol. 14, No. 3. pp. 445-451.
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