Anaesthesia in horses using halothane and intravenous ketamine-guaiphenesin: a clinical study.

The research article examines a combined inhalation-intravenous anaesthetic approach for use in horses; it finds that a combination of halothane and a continuous infusion of a ketamine-guaiphenesin mixture provides suitable surgical anaesthesia while reducing the risk of hypotension.

Research Objectives and Methodology

• The study aimed to evaluate a combined inhalation-intravenous anaesthetic protocol for horse anaesthesia.
• The methodology involved a randomized clinical trial, where 28 horses of varied ages and body masses were randomly assigned to two treatment groups.
• The first group, referred to as the H group, was maintained on halothane alone, recording a mean end-tidal halothane concentration of 1.24%.
• The second group, referred to as the HKG group, combined halothane and a continuous infusion of a ketamine-guaiphenesin mixture. The mean end-tidal halothane concentration for this group was 0.61%.
• The two anaesthetic techniques were compared in terms of differences in quality and cardiopulmonary effects.

Research Findings

• The HKG group exhibited significantly greater stability than the H group during anaesthesia.
• The HKG group’s need for dobutamine, used to maintain blood pressure, was significantly lower compared to the H group.
• Despite the variations in anaesthesia, recovery times and quality were deemed acceptable in all cases, with no significant differences noted between the two groups.

Conclusions

• The researchers concluded that the use of a ketamine and guaiphenesin infusion in combination with halothane in low concentrations provides suitable anaesthesia for surgery in horses and also reduces the risk of hypotension.
• The anaesthetic technique examined in this study represents a practical alternative to the use of inhalation anaesthesia with halothane alone.