Which NMDA receptor antagonist is used as an anesthetic and is known for dissociative effects?

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Multiple Choice

Which NMDA receptor antagonist is used as an anesthetic and is known for dissociative effects?

Blocking NMDA receptors can produce dissociative anesthesia, and the agent most associated with this in clinical practice is ketamine. By inhibiting NMDA receptors in brain networks that integrate sensory and emotional information, ketamine creates a dissociated state where analgesia and amnesia occur while the patient may appear awake and maintain protective reflexes and breathing. This combination—pain relief, memory loss for the procedure, and preserved airway reflexes—gives ketamine its distinctive dissociative anesthetic profile. While another NMDA antagonist like PCP can produce similar dissociative effects, PCP is not commonly used as an anesthetic today due to unpredictable reactions and safety concerns. LSD and cocaine operate through different primary mechanisms (serotonin receptor activity and monoamine reuptake inhibition, respectively) and are not NMDA antagonists.

Blocking NMDA receptors can produce dissociative anesthesia, and the agent most associated with this in clinical practice is ketamine. By inhibiting NMDA receptors in brain networks that integrate sensory and emotional information, ketamine creates a dissociated state where analgesia and amnesia occur while the patient may appear awake and maintain protective reflexes and breathing. This combination—pain relief, memory loss for the procedure, and preserved airway reflexes—gives ketamine its distinctive dissociative anesthetic profile. While another NMDA antagonist like PCP can produce similar dissociative effects, PCP is not commonly used as an anesthetic today due to unpredictable reactions and safety concerns. LSD and cocaine operate through different primary mechanisms (serotonin receptor activity and monoamine reuptake inhibition, respectively) and are not NMDA antagonists.

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