Use of rocuronium administered by continuous infusion in dogs

Area of Science:

• Veterinary Anesthesiology
• Pharmacology

Background:

• Maintaining neuromuscular blockade is crucial during general anesthesia in dogs.
• Rocuronium bromide is a commonly used neuromuscular blocking agent.

Purpose of the Study:

• To evaluate the efficacy of a continuous infusion technique for rocuronium bromide in dogs.
• To assess the suitability of this administration method for maintaining neuromuscular blockade.

Main Methods:

• Twenty-two dogs (ASA I-II) received a bolus of rocuronium bromide (0.5 mg/kg) followed by a continuous infusion (0.2 mg/kg/hr).
• Neuromuscular function was monitored using train-of-four (TOF) stimulation of the facial nerve.
• Blockade onset and duration were assessed visually by counting twitches.

Main Results:

• Rocuronium bromide bolus achieved complete neuromuscular blockade in 21 out of 22 dogs.
• Median onset time for blockade was 82 seconds.
• The median duration of the infusion was 76 minutes.

Conclusions:

• The continuous infusion protocol for rocuronium bromide is effective and practical for clinical use in dogs.
• Further research is recommended to optimize infusion titration for precise neuromuscular blockade management.