Ketamine: which statement is true?

• A. Requires concurrent sedative administration
• B. Can be given without any sedative
• C. Is only for large animals
• D. Has no analgesic properties

Answer: (A)

Ketamine acts as a dissociative anesthetic that provides good analgesia and maintains airway reflexes, but it does not produce reliable muscle relaxation and can lead to agitation or a rough emergence if used alone. Because of this, it is typically given with a sedative or tranquilizer to achieve smooth induction and balanced anesthesia. Combining ketamine with a sedative such as a benzodiazepine or an alpha-2 agonist provides muscle relaxation and anxiolysis, reduces potential emergence excitement, and still preserves ketamine’s analgesic benefits and cardiovascular stability. Ketamine is used in both small and large animals, so its applicability is not limited to large species, and it does have analgesic properties due to NMDA receptor antagonism. While very brief, uncomplicated procedures might be done with ketamine alone in some protocols, the common and effective approach is concurrent sedation, which is why that statement is considered true.