Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
absence of sensibility to pain, particularly the relief of pain without loss of consciousness; absence of pain or noxious stimulation.
continuous epidural analgesia continuous injection of an anesthetic solution into the sacral and lumbar plexuses within the epidural space to relieve the pain of childbirth, in general surgery to block the pain pathways below the navel, or to relieve chronic unremitting pain.
epidural analgesia analgesia induced by introduction of the analgesic agent into the epidural space of the vertebral canal.
infiltration analgesia infiltration anesthesia.
patient controlled analgesia (PCA) an apparatus used to relieve acute pain. It consists of a pump attached to an intravenous or subcutaneous injection site and filled with multiple doses of medication that are available when the system is activated by the patient. The pump is programmed to “lock-out” the patient for specified intervals making overdosage unlikely.
patient controlled epidural analgesia patient controlled analgesia in which a narcotic or local anesthetic is administered into the epidural space via a catheter.
relative analgesia in dental anesthesia, a maintained level of conscious sedation short of general anesthesia, usually induced by inhalation of nitrous oxide and oxygen.
transdermal analgesia a method of pain control in which a patch with a rate-controlling membrane is applied to the skin; the medication is deposited in the upper layers of the skin where it is absorbed into the systemic circulation.
Anesthesia produced in a local area by injecting an anesthetic agent into operative sites or wounds.
See also: analgesia