ch 48 Flashcards
main NT for PNS
acetylcholine
main receptor for PNS
cholinergic receptors
cholinergic drugs act on the PNS –> SLUDD
salivation, lacrimation, urination, digestion, defecation
S/S: patient’s body produces antibodies attacking acetylcholine receptors; eye, face, swallowing most commonly affected
myasthenia gravis
what drug treats myasthenia gravis?
neostigmine
- decrease inactivation acetylcholine resulting in increased skeletal muscle tone/strength
- AE: salivation, drooling, more peristalsis (diarrhea)
- can cause bronchioleconstriction, slowed HR
neostigmine (Bloxiverz)
most common form of dementia; acetylcholine levels decreased
alzheimer’s disease
what drug is for alzheimer’s disease?
donepezil
- elevates acetylcholine and improves memory
- AE: frequent urination, CNS related
- give at bedtime
donepezil (Aricept)
T/F: donepezil will help memory but doesn’t cure disease, only slowing the progression by increasing acetylcholine levels
T
sensation of bladder fullness/incomplete bladder emptying, typically due to:
- neurologic bladder
- diabetes
- prostate enlargement
- general anesthesia
urinary retention
what drug treats urinary retention?
bethanechol
- increases contraction of detrusor muscle around bladder to promote bladder emptying
- AE: increased salivation, n/v, decreased HR/orthostatic hypotension
- administer on empty stomach
bethanechol (Urecholine)
overstimulation of the PNS due to drugs is called
cholinergic crisis
when administering cholinergic drugs, what should you always have available?
atropine