Intro Flashcards
What 3 things does general anesthesia include?
Muscle relaxation, narcosis, analgesia
Analgesia
Loss of sensitivity to pain
Nociception
Neural process of encoding noxious stimuli (does not require consciousness)
Tranquilization
State of behavioral change, wherin anxiety is relieved and the patient is relaxed, although aware of its surroundings
Sedation
State characterized by CNS depression accompanied by drowsiness; the patient is likely unaware of its surroundings
Local anesthesia
Loss of sensation in a circumscribed body area
Regional anesthesia
Loss of sensation in a larger, though limited, body area
Narcosis
Drug-induced state of deep sleep from which a patient cannot be easily aroused; may or may not be accompanied by antinociception
General anesthesia
Drug-induced unconsciousness characterized by controlled, reversible depression of the CNS and perception; in this state, the patient is not arousable by noxious stimulation. Sensory, motor, and autonomic reflex functions are attenuated to varying degrees.
Dissociative anesthesia
Induced by drugs that dissociate the thalamocortical and limbic systems.
It is characterized by a catatonic state where the eyes remain open and swallowing reflexes remain functional. Skeletal muscle rigidity is common unless a muscle relaxing drug is given in conjunction.
Produced by “dissociative anesthetics”–ketamine and tiletamine (Telazol).
Surgical anesthesia
Stage/plane of general anesthesia that provides unconsciousness, muscle relaxation and analgesia sufficient for painless surgery
Balanced anesthesia
Induced by a multiple drug approach. Drugs are targeted to attenuate individual components of the anesthetic state; unconsciousness, analgesia, muscle relaxation
Inhalation anesthetic
Anesthetic gases (NO) or vapors are inhaled in combination with oxygen
Injectable anesthetic
Anesthetic solutions are injected intravenously, intramuscularly, or subcutaneously
Oral, transmucosal, or intranasal anesthetics
These routes are infrequently used with liquids or gels in anesthesia