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Program For The Assessment Of Veterinary Education (PAVE) Practice Test

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Ketamine is classified as which type of anesthetic agent?
Correct Answer:
Dissociative
Explanation:
Ketamine is a dissociative anesthetic. It produces anesthesia by blocking NMDA receptors in the brain, which creates a dissociated state where the patient is analgesic and amnesic but may remain awake or have only partial sedation with preserved airway reflexes and spontaneous breathing. This mechanism and clinical profile set it apart from other categories: opiates mainly provide analgesia with risk of respiratory depression; local anesthetics numb a specific region without full unconsciousness; inhalants are volatile general anesthetics delivered by inhalation that depress consciousness more uniformly. Ketamine’s dissociative state also often brings analgesia and can cause sympathetic stimulation, helping in certain clinical scenarios.

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