Cholinergic Drugs Flashcards
Bethanechol (Urecholine)
Chemical Classification
Synthetic Choline Ester
Bethanechol (Urecholine)
Mechanism of Action
Stimulates muscarinic ACH receptors directly; mimics effects of parasympathetic nervous system stimulation; stimulates gastric motility, micturition; increases lower esophageal sphincter pressure
Bethanechol (Urecholine)
Uses
Urinary retention (postoperative, postpartum), neurogenic atony of bladder with retention
Bethanechol (Urecholine)
Contraindications
Hypersensitivity, severe bradycardia, asthma, severe hypotension, hyperthyroidism, peptic ulcer, parkinsonism, seizure disorders, CAD, COPD, coronary occlusion, mechanical obstruction, peritonitis, recent urinary/GI surgery, GI/GU obstruction
Bethanechol (Urecholine)
Side Effects
CNS: dizziness, headache, malaise
CV: hypotension, bradycardia, reflex tachycardia, CARDIAC ARREST, CIRCULATORY COLLAPSE
EENT: miosis, increased salivation, lacrimation, blurred vision
GI: Nausea, Bloody Diarrhea, Belching, Vomiting, Cramps, Fecal Incontinence
GU: urgency
INTEG: rash, urticaria, flushing, increased sweating
RESP: ACUTE ASTHMA, DYSPNEA, BROCHOCONSTRICTION
Bethanechol (Urecholine)
Nursing Considerations
ASSESS:
- URINARY PATTERNS: retention, urgency
- BP pulse: observe after parenteral dose for 1 hr
- I&O ratio: check for urinary retention, urge incontinence
- TOXICITY: bradycardia, hypotension, bronchospasm, headache, dizziness, seizures, respiratory depression; product should be discontinued if toxicity occurs
Bethanechol (Urecholine)
Overdose Treatment
Atropine 0.6-1.2mg IV or IM
Donepezil (Aricept)
Functional Classification
Anti-Alzheimer’s agent
Donepezil (Aricept)
Chemical Classification
Reversible Cholinesterase Inhibitor
Donepezil (Aricept)
Mechanism of Action
Elevate acetylcholine concentrations (cerebral cortex) by slowing degradation of acetylcholine released in cholinergic neurons; does not alter underlying dementia
Donepezil (Aricept)
Uses
Mild to severe dementia with Alzheimer’s disease
Donepezil (Aricept)
Contraindications
Hypersensitivity to this product or piperdine derivatives
Donepezil (Aricept)
Side Effects
CNS: dizziness, Insomnia, somnolence, Headache, fatigue, abnormal dreams, syncope, SEIZURES, drowsiness, agitation, depression, confusion, fever, hallucinations
CV: ATRIAL FIBRILLATION, hypo/hypertension, SINUS BRADYCARDIA, AV BLOCK
GI: Nausea, Vomiting, anorexia, Diarrhea, abdominal pain, GI BLEEDING, weight loss
GU: urinary frequency, UTI, incontinence
INTEG: rash, flushing, diaphoresis, bruising
META: hyperlipidemia
MS: cramps, arthritis, arthralgia
RESP: rhinitis, URI, cough, pharyngitis, dyspnea
Donepezil (Aricept)
Nursing Considerations
ASSESS:
- BP: hypo/hypertension, heart rate
- Mental Status: affect, mood, behavior changes, depression, complete suicide assessment; neurologic status
- GI status: nausea, vomiting, anorexia, diarrhea; monitor weight
- GU status: urinary frequency, incontinence, I&O
PERFORM/PROVIDE
-Assistance with ambulation during beginning therapy; dizziness, ataxia may occur
Memantine
Functional Classification
Anti-Alzheimer agent