Case report details dog’s survival after refractory VT and CPR

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A new case report in the Journal of Veterinary Emergency and Critical Care describes a rare survival story in a 6-month-old American Cocker Spaniel with refractory ventricular tachycardia that progressed to pulseless ventricular tachycardia and ventricular fibrillation. After multiple antiarrhythmics, attempted electrical cardioversion, 16 minutes of CPR, and intra-arrest intravenous lipid emulsion given for suspected lidocaine toxicosis, the dog achieved return of spontaneous circulation and was discharged neurologically functional. The patient remained clinically stable 12 months later on mexiletine and sotalol, according to the report from University of Wisconsin–Madison clinicians. (pmc.ncbi.nlm.nih.gov)

Why it matters: For veterinary professionals, the case highlights how layered rescue strategies may still produce a good outcome even after prolonged arrest in a young dog with a shockable rhythm. It also puts a spotlight on two practical issues in emergency care: lidocaine remains a standard acute therapy for canine ventricular arrhythmias, but cumulative dosing can create concern for toxicosis, and current RECOVER guidance supports lidocaine in dogs with refractory shockable rhythms during CPR. At the same time, intravenous lipid emulsion remains a rescue tool with limited evidence and known potential adverse effects, so this report is better read as proof of possibility than a protocol change. (merckvetmanual.com)

What to watch: Watch for whether this case prompts more formal discussion of intra-arrest lipid emulsion use in suspected antiarrhythmic toxicosis, or additional reports that help define when the benefit outweighs the risk. (frontiersin.org)