Comparison between intravenous lidocaine and fentanyl on cough reflex and sympathetic response during endotracheal intubation in dogs.

Objective: To compare the effects of intravenous (IV) lidocaine and fentanyl on the cough reflex and autonomic response during endotracheal intubation in dogs.

Study Design: Randomized, blinded, superiority clinical trial.

Animals: A total of 46 client-owned dogs undergoing magnetic resonance imaging.