Neuroleptanalgesic anesthesia or neuroleptanalgesia (from the Greek, neurolepsis - seizure and analgos - without pain), is a state of sedated consciousness, induced for a medical procedure by a combination of opioids for pain control, and neuroleptics (also known as anti-psychotics) for sedation.
Neuroleptanalgesia is produced by a combination of an opioid analgesic such as fentanyl, and a neuroleptic like droperidol or haloperidol. After administering nitrous oxide with oxygen, neuroleptanalgesia can be converted to neuroleptanesthesia, or complete sedation of consciousness.
Mosby's Medical Dictionary, 8th edition. (2009) Elsevier
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