Sedation and analgesia in the standing horse 1. Drugs used for sedation and systemic analgesia

Summary

# Standing Horse Sedation and Analgesia: Systemic Drug Approaches Many equine procedures—from diagnostic imaging to minor surgery—can be safely conducted in standing, conscious horses through judicious combination of sedatives, analgesics and local anaesthetic techniques, eliminating the risks associated with general anaesthesia in this species. Michou and Leece provide a comprehensive review of systemic sedative and analgesic agents delivered via intravenous, intramuscular, oral and transmucosal routes, examining their pharmacological profiles, onset times, duration and clinical applications in standing horses. The combination approach proves essential because sedation alone does not provide analgesia; selecting appropriate drug pairings—such as alpha-2 agonists with opioids—produces synergistic effects that allow horses to tolerate procedures with reduced stress responses and improved recovery profiles. For practitioners, understanding these pharmacological options and their interactions enables safer, more humane management of standing procedures whilst maintaining the animal's ability to weight-bear and recover quickly, though Michou and Leece note that infiltration, epidural, perineural and intra-articular techniques warrant separate consideration in complementary work. This practical knowledge directly influences clinical decision-making for farriers performing remedial work, veterinarians managing acute conditions, and physiotherapists requiring patient cooperation during treatment.

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Key Findings

• •Combination of sedation, analgesia and local anaesthetic techniques enables safe and humane performance of surgical and diagnostic procedures in conscious horses
• •Multiple drug administration routes (IV, IM, oral, transmucosal) are available for systemic sedation and analgesia in standing horses

Conditions Studied