ECG of the Month

Hammond, Hillary K; Tjostheim, Sonja S.

doi:10.2460/javma.256.6.650

Cited by 1 publication

(2 citation statements)

References 15 publications

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“…Lastly, Doberman Pinschers are predisposed to malignant ventricular arrhythmias, and although the worsening of the ventricular arrhythmias was closely associated with 2 lidocaine administrations, this could have been a coincidence, especially given the high stress level that accompanied hospitalization. In light of the outcome in case 1 and given that the presenting arrhythmia was unlikely to have been vagally driven, the use of lidocaine in this case remains controversial despite 1 previous publication, 17 and the authors are not advocating its use in similar clinical scenarios. In comparison, the dog with FAT (case 2) developed monomorphic VPCs shortly after lidocaine administration.…”

Section: Discussionmentioning

confidence: 89%

“…Although successful AF cardioversion using lidocaine has only been described in vagally mediated AF, a single dose of lidocaine was viewed as safe and, in some occasions, even large breed dogs with dilated cardiomyopathy and a recent onset AF were successfully treated with lidocaine. 17 After discussion of all options with the owner, pharmacological cardioversion using lidocaine was attempted.…”

Section: Casementioning

confidence: 99%

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Rhythm disturbances associated with lidocaine administration in four dogs with supraventricular tachyarrhythmias

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Spalla

Vázquez

et al. 2021

J Vet Emergen Crit Care

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Objective: To describe arrhythmias associated with administration of lidocaine in dogs treated for supraventricular tachyarrhythmias.Case summaries: Four dogs with recent-onset supraventricular tachyarrhythmias: 3 dogs had atrial fibrillation (AF), and 1 had focal atrial tachycardia (FAT), which was thought to be AF at the time of assessment. The substrate of the supraventricular tachyarrhythmia was considered to be due to primary cardiomyopathy in 1 dog, high vagal tone in 2 dogs, and the change in hemodynamics from heavy sedation in 1 dog. Pharmacological cardioversion using lidocaine was only successful in the 2 dogs with vagally mediated AF. In these 2 cases, lidocaine administration resulted in a paroxysmal atrial flutter that was self-limiting and quickly led to sinus rhythm within 10 seconds in 1 dog but did not change over a 5-minute interval and required additional boluses in another dog. In the latter case, the dog showed severe bradycardia for 17.5 seconds prior to achieving sinus rhythm. The 2 unsuccessful cases both developed ventricular arrhythmias shortly after the lidocaine administration, with 1 case degenerating into ventricular fibrillation and cardiac arrest.New or unique information provided: Arrhythmias associated with lidocaine should be considered when treating dogs with supraventricular tachyarrhythmia.

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Section: Discussionmentioning

confidence: 89%

Section: Casementioning

confidence: 99%