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Pharm
Anesthesia
17
Nursing
Undergraduate 2
01/07/2010

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Term
General anesthesia
Definition
characterized by a state of unconsciousness, analgesia, and amnesia, with skeletal muscle relaxation and loss of reflexes 
Term
balanced anesthesia
Definition
a combination of drugs to produce loss of consciousness, analgesia, and muscle relaxation, while producing and maintaining a lighter stage of anesthesia
Term
what are the benefits in using balanced anesthesia
Definition
fewer side effects, less n/v, and less pain
Term
drugs that induce paralysis by muscle flaccidity
Definition
nonpolarizing drugs
Term
drugs which excite muscles and promote contraction, ultimately leading to muscle paralysis after repeated excitation
Definition
depolarizing drugs
Term
what are the properties of general anesthesia
Definition

- hypnosis = produces state of unconsciousness

- analgesia = blocks sensation pain

- amnesia = blocks memory of events associated with procedure

- muscle relaxation = relieves intense anxiety

- loss of reflexes = sensory/autonomic

Term
describe stage 1 of anesthesia
Definition
ANALGESIA = pt remains consciuos, may be able to converse, and experiences some analgesia as the anesthetic reduces sensory transmission in the spinothalamic tract; ends when pt becomes unconscious.
Term
describe stage 2 of anesthesia
Definition
EXCITEMENT = systolic pressure rises, and the pt may experience excitation and restlessness along with an increased resp. rate; pt may experience delirium; usually circumvented by administering a short acting barbituate iv beforehand.
Term
describe stage 3 of anesthesia
Definition
SURGICAL ANESTHESIA = may have four planes characterized by different responses of the ocular muscles, eye reflexes, and pupils; surgical procedure occurs when pt is in planes 2 and 3.
Term
describe stage 4 of anesthesia
Definition
MEDULLA DEPRESSION =  the resp.and vasomotor centers are depressed, and spontaneous respiration has ceased; unless rapid intervention and support occur, coma and death follows.
Term
inhaled anesthetic prototype
Definition
isoflurane (Forane)
Term
how is isoflurane used
Definition
to induce and maintain anesthesia and is typically part of balanced anesthesia; used in ICUs for sedation, in obstetrics for analgesia, and in ocular surgicla procedures because it  lowers intraocular pressure
Term
indications of isoflurane
Definition
induction and maintenancr of anesthesia; muscle relaxation; and pain management
Term
adverse effects of isoflurane
Definition
hypotension, aspiration, resp./cardiac depression, malignant hyperthermia, hepatotoxicity, n/v
Term
severe/major interactions of isoflurane
Definition
hypersensitivity. resp. disease, chronic liver disease, other CNS/cardiac/resp. depressants
Term
nursing implications for isoflurane
Definition
prevent aspiration by helping the patient in a side lying position and administering antiemetic drugs; manage shivering and tremors by providing warm blankets; patients need to be in a room in which air supply is continually replaced and exhaled gases are carried out through exhaust vents; promote lung expansion by having the pt TCDB and administer oxygen.
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