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Peer-reviewed veterinary case report

How lidocaine and remifentanil stopped fast heart rate in a dog

By Alyssa Brum de Souza Pahim et al.·Published in Open Veterinary Journal·2025·BR 472 - Km 585, Uruguaiana, RS, Brazil, LY·View original on DOAJ

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Original publication title: Lidocaine and remifentanil for ventricular tachycardia suppression in a dog: A case report

Species:
dog

Plain-English summary

An 11-year-old Labrador Retriever with a mouth tumor was scheduled for surgery but was found to have a heart rhythm problem called ventricular tachycardia. To keep the dog stable during anesthesia, the vet used a combination of medications, including lidocaine and remifentanil. Throughout the surgery, the dog's heart rate was monitored, and thankfully, it remained stable without any further issues. This approach effectively managed the dog's heart condition during the procedure.

People also search for: dog heart rhythm problems · Labrador anesthesia care · ventricular tachycardia treatment in dogs

Abstract

Background: Ventricular tachycardia is an arrhythmia that, if not corrected, can lead to reduced ischemic stroke volume and cardiac output, resulting in low tissue perfusion. Aim: To describe a case of ventricular tachycardia suppression using lidocaine and remifentanil in a dog during the transanesthetic period. Case Description: An 11-year-old Labrador Retriever dog with intraoral neoplasia was referred for hemimandibulectomy. Preanesthetic evaluation and complementary diagnostic tests revealed the presence of splenic neoplasia along with paroxysmal ventricular tachycardia. The preanesthetic medication was methadone, and the patient was induced into general anesthesia using propofol. During the transanesthetic period, anesthesia was maintained with sevoflurane and continuous infusion of lidocaine and remifentanil. Throughout the procedure, the patient remained in sinus tachycardia without any arrhythmic events. Conclusion: The arrhythmias on electrocardiogram during the transanesthetic period highlight the effective control of paroxysmal ventricular tachycardia through the use of lidocaine and remifentanil infusion. [Open Vet. J. 2025; 15(7.000): 3352-3356]

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Original publication on DOAJ: https://doi.org/10.5455/OVJ.2025.v15.i7.47