drugs Flashcards
anesthetic agents
any drug used to induce a loss of sensation with or without unconsciousness
adjunct
drug that is not true anesthetic to produce desires effects
what do anesthetic drugs provide
sedation, muscle relaxation, analgesia, neuroblockage, parasympathetic blockade
pharmacokinetics
effect the body has on a drug
pharmacodynamics
effect drug has on the body
agonist
bind and stimulate target tissue, most anesthetic and adjuncts are agonists
anatagonists
reversal agent for agonists, prevent agonist from stimulating
analgesia
no pain perception, pre and post op, do not provide general anesthesia
preanesthetic drugs
calm and sedate, minimize adverse effects, reduce dose for induction, smoother induction, analgesia, muscle relaxation
parasympathetic drugs
block acetylcholine, prevent or treat brady cardia, atropine and glycopyrrolate
anticholinergics effects on CNS
limited effect
anticholinergic effects on CVS
prevent bradycardia, cardiac arrhythmias
anticholinergic effects on resp system
decreased secretions but become thicker, may cause airway blockage, bronchodilation
example of phenothiazines
ace
uses of ace
premed, decreased dose of gen anesthesia, used with opioids
is there a reversal agent for ace
no
ace effects on CNS
calming, reluctant to move, decreased interest in surroundings, reduce seizure threshold, may produce aggression or excitement
ace effects on CVS
peripheral dilation, hypotension, increased HR, protects against arrhythmias, and decreases cardiac output
ace effects on resp
not significant
ace effects on GI
anitiemetic
ace can cause _______ in horses and large animals
penile prolapse
uses of Ace
increased potency and duration
breeds sensitive to ace
aussies, large breeds, boxers, greyhounds, terriers, cats
benzodiazepines
tranquilizer, controlled, reversible
benzo effects on CNS
calming, antianxiety, disorientation, dysphoria, aggression, ataxia, recumbency
benzo effects on CNS
minimal effects, high margin of safety
benzodiazepines can be used as an appetite stimulant in ______
cats
examples of benzodiazepines
diazepam, zolazepam, midazolam
Alpha 2 Agonist
stimulate alpha 2 receptors of sympathetic nervous system (no fight or flight response)
uses of A2 agonists
sedation, analgesia
effects of A2 agonists on CNS
ataxia, startle, analgesia
effects of A2 agonists on CVS
bradycardia, hypotension, arrhythmias
effects of A2 agonists on resp. system
depression
who should avoid A2 agonists
geriatric, pregnant animals, pediatrics
xylazine
2% small animals, 10% horses, 1/10 horse dose for cows