๐- Neuro, Antiemetic, Opioid Drugs Test Flashcards
What are the side effects of antihistamines
Anticholinergic (drowsiness, dry mouth, constipation) tachycardia, blurred vision and urinary retention
What is the action of antiemetic antihistamines
Inhibit vestibular stimulation in the middle ear
Dimenhydrinate
Dramamine
Type: antiemetic nonprescription antihistamine
Meclizine hydrochloride
Antivert
Type: antiemetic nonprescription antihistamine
How does bismuth subsalicylate work
(Pepto bismol)
Acts directly on gastric mucosa to decrease irritation and suppress vomiting
Bismuth subsalicylate
Pepto bismol
Type: nonprescription antiemetic
Phosphorated carbohydrate solution
Emetrol
Type: nonprescription antiemetic
How does phosphorated carbohydrate solution work
(Emetrol)
Decreases n/v by changing the gastric pH and decreases smooth muscle contraction of the stomach
What is important to note about phosphorated carbohydrate solution
(Emetrol)
High sugar content - avoid giving to diabetics
List the 3 types of dopamine antagonists
Butyrophenones
Phenothiazines
Benzodiazepines
How do dopamine antagonists work
Block dopamine2 receptors in the CTZ
Droperidol
Inapsine
Type: prescription antiemetica-dopamine antagonists- butyrophenones
Haloperidol
Haldol
Type: prescription antiemetic- dopamine antagonists- butyrophenones
What are the side effects of taking butyrophenones (antiemetic dopamine antagonists)
EPS syndrome and hypotension
What are butyrophenones used for
Postop n/v
Promethazine
Phenergan
is also an antihistamine
Type: prescription antihistamine- dopamine antagonist AND antihistamine- phenothiazines
What are some common side effects of taking promethazine
(Phenergan)
Antihistamine and anticholinergic effects
Lorazepam
Ativan
Type: prescription antihistamine- dopamine antagonists- benzodiazepines
What is lorazepam used for
Antianxiety and cancer chemotherapy in combination with others
How do serotonin receptor antagonist work
Blocks serotonin receptors in the CTZ
Ondansetron
Zofran
Type: antiemetic- serotonin receptor antagonist
What is something important to note about ondansetron
(Zofran)
Increased efficacy with steroids and it has potentially fatal cardiac arrhythmias with IV route
Palonosetron
(Aloxi)
Type: prescription antiemetic- serotonin receptor inhibitor
What is something important to note about palonosetron
(Aloxi)
2nd generation , more potent and has a longer half life
Dexamethasone
Decadron
Type: glucocorticoid- prescription antiemetic
Methylprednisolone
Solu-medrol
Type: prescription antiemetic- glucocorticoid
What is methylprednisolone used for
(Soul-medrol)
Cancer chemotherapy, given IV
Dronabinol
Marinol
Type: cannabinoid- prescription antiemetic
What is dronabinol used for
(Marinol)
Used when cant take other antiemetics
Metoclopramide
Reglan
Type: miscellaneous- prescription antiemetic
How does metoclopramide work
Blocks dopamine receptors in the CTZ
Hydroxyzine
Vistaril
Type: prescription antiemetic antihistamine
Scopolamine
Transderm-scop
Type: prescription antiemetic anticholinergic
Patients with glaucoma should NOT use which drugs
Antihistamines and anticholinergics
Ipecac OTC
Action: stimulates CTZ and acts directly on gastric mucosa
Use: induce vomiting after toxic substance
What is something important to note about ipecac OTC
Avoid vomiting if substance is caustic or petroleum
No ipecac fluid extract
How do adsorbent antidiarrheals work
Coats wall of gi tract and adsorbs bacteria or toxin that cause diarrhea
Kaolin-pectin
Kapectolin
Type: adsorbent antidiarrheal
Colestipol and cholestyramine
Questran
Type: adsorbent antidiarrheal
Diphenoxylate hydrochloride and atropine sulfate
Lomotil
Type: opioid antidiarrheal
What is something important to note about diphenoxylate hydrochloride and atropine sulfate
(Lomotil)
Is a schedule V controlled substance
Loperamide
Imodium
Type: opioid antidiarrheal
Octreotide
Sandostatin
Use: severe diarrhea from cancer
Type: somatostatin analog
How do somatostatin analogโs work
Inhibit gastric acid, gastric secretions and hormones ; decrease smooth muscle contractility
What are some antidiarrhea nursing interventions
Monitor
BP
Respirations
Frequency of bowel movements and sounds
Electrolytes
Notify provider if lasts more than 48hrs
What is a purgative
A drug that promotes watery stool with cramping HARSH
Psyllium hydrophyllic mucilloid
Metamucil
Use: prevention and treatment of chronic constipation
Administration: mix in water or juice, drink immediately, follow with 1 glass of water
Type: bulk forming anticonstipation
The symptoms of MG are caused by
Autoimmune destruction of acetylcholine receptor sites and a resultant โคต๏ธ in neuromuscular transmission
What is myasthenia Gravis (MG)
An autoimmune process, progressive muscular weakness of the respiratory system, facial muscles and extremities
How do acetylcholinesterase inhibitors work
They inhibit the action of the enzyme. Resulting in more acetylcholine is available to activate the cholinergic receptors and promote muscle contraction
โคด๏ธ transmission of neuromuscular impulses by preventing the destruction of ach
Neostigmine
Prostigmin
Short-acting , every 2-4 hrs
Type: cholinesterase inhibitor
Use: to treat myasthenia crisis
Edrophonium
Tensilon
Ultrashort-acting for diagnosing myasthenia gravis
Type: cholinesterase inhibitors
Pyridostigmine bromide
Mestinon
Intermediate-acting, every 3-6 hours
Type: cholinesterase inhibitors
What are some common side effects of cholinesterase inhibitors
Cholinergic side effects
Nausea, vomiting, diarrhea, abdominal cramps, increased salivation and tears, miosis, blurred vision, bradycardia and hypotension
What is any early sign of myasthenia gravis
Ptosis - dropping eyelid
An enlarged thymus means what
And increase in antibodies
List 4 nursing implications of myasthenia gravis
Observe for respiratory distress
Take before meals if possible
Keep to a specific dosing schedule
Observe for over or under dosing
What is myasthenia crisis
A type of Myasthenia gravis crisis character by Generalized muscle weakness
Can occur when Not enough medicine is given , administer Neostigmine (prostigmin) to relieve
What is cholinergic crisis
A type of myasthenia gravis crisis characterized by muscle weakness, drooling, increased tearing and sweating, bradycardia and abdominal cramps
Can occur when too much medicine is given
Which medication is administered to determine between a myasthenia and cholinergic crisis
Edrophonium (tensilon)
What medication is given as the antidote for cholinergic crisis
Atropine sulfate
What is multiple sclerosis
An autoimmune disorder that attacks the myelin sheath of nerve fibers in the brain and spinal cord
List 4 characteristics of multiple sclerosis
Remissions and exacerbations
Weakness
Spasticity in extremities
Diplopia
What is diplopia and what condition is it associated with
Double vision
Is associated with multiple sclerosis
What 3 types of drugs are used to treat multiple sclerosis
Glucocorticoids
Biologic response modifiers
Immunosuppressants
What glucocorticoid is used to treat multiple sclerosis
Prednisone
What biologic response modifier is used to treat multiple sclerosis
Interferon B
Azathioprine
Imuran
Used to treat chronic and progressive multiple sclerosis
Type: immunosuppressant
Cyclophosphamide
Cytoxan
Used to treat chronic and progressive multiple sclerosis
Type: immunosuppressant
What is a muscle spasm
Occurs when muscles become tightened and develop a fixed pattern of resistance
How do muscle relaxants work to relax skeletal muscle
Depressing motor activity originating at the level of the brainstorm and spinal motor neurons
Increasing circulating norepinephrine
What are some side effects of muscle relaxants
CNS depression , dizziness , headache , diplopia , flatulence , erectile dysfunction and risk for falls
Has anti-anxiety and sedative properties with a risk for dependency
What are some teaching implications related to muscle relaxants
Avoid other CNS depressants
Short term treatment
Contraindicated in pregnancy
Donโt stop abruptly
Cyclobenzaprine
Flexeril
Type: muscle relaxant
Methocarbamol
Robaxin
Type: muscle relaxant
Carisoprodol
Soma
Type: muscle relaxant
Diazepam
Valium
Used to treat acute muscle spasms
Antispasmodic drugs are used to treat what
Spasticity due to spinal cord injury, cerebral palsy
Baclofen
Lioresal
Is a centrally acting muscle relaxant that acts on the spinal cord
Type: antispasmodic
Dantrolene
Dantrium
Action: acts peripherally at the neuromuscular junction to block calcium release
Type: antispasmodic
What is something to note about antispasmodicโs
- start with a low dose and increase gradually
- watch for hypotension
How do neuromuscular blocking agents work
Block the effect of acetylcholine at the receptor
Block the release and synthesis of acetylcholine
When are neuromuscular blocking agents used
During surgery or for patients who are on ventilators
Prevents voluntary muscle contraction
Pancuronium bromide
Pavulon
Type: neuromuscular blocking agent/ paralytic
Succinylcholine
Anectine
Type: neuromuscular blocking agents/ paralytic
What is something to note about/before taking paralytics
The patient should be sedated before administration
What is Parkinsonโs disease
Chronic neurologic disorder caused by degeneration of dopamine producing cells that effects the extrapyramidal motor tract (controls balance, posture, locomotion)
What is bradykinesia
Slow movement
What are the 3 key features of Parkinsonโs disease
Rigidity , bradykinesia and tremors
What is the cause of Parkinsonโs
Caused by an imbalance of the neurotransmitters dopamine (inhibitory) and acetylcholine (excitatory)
In reference to Parkinsonโs dopamine usually does what in relation to acetylcholine
Dopamine usually maintains control and inhibits its excitatory response
Drug therapy related to Parkinsonโs
Focus is restoring the balance between dopamine and acetylcholine
- enhancing dopamine production or replacing it
- decreasing the influence of acetylcholine
Anticholinergic and dopaminergic drugs
What do dopaminergic drugs do
Increase dopamine
How are Anticholinergics used to treat Parkinsonโs
Block the action of acetylcholine reducing the rigidity and some of the tremors characteristic of Parkinsonโs , but have minimal effect on bradykinesia
Benzotropine
Cogentin
Type: anticholinergic used to treat Parkinsonโs
Trihexyphenidyl
Artane
Type: anticholinergic used to treat Parkinsonโs
What are some side effects of anticholinergics used to treat Parkinsonโs
Dry mouth Blurred vision Eye pain Photophobia Constipation Urinary retention Tachycardia Orthostatic hypotension Anhidrosis
Mydriasis
Dilation of pupils
Anhidrosis
Inability to sweat
Carbidopa-levodopa
Sinemet
Type: dopaminergic
Use: to treat Parkinsonโs
Bromcriptine
Parlodel
Type: dopaminergic
Use: to treat Parkinsonโs
Amantadine
Symmetrel
Type: dopaminergic
Use: early treatment of Parkinsonโs as drug tolerance develops
What is something important to note about amantadine
(Symmetrel)
It is also an antiviral drug for influenza A
Selegeline
Eldepryl
Type: MAO-B inhibitors
Use: to treat Parkinsonโs
Action: inhibits MAO-B thus prolonging the action of levodopa
Entacapone
Comtan
Type: COMT (catechism-o-methyl trabsferase) inhibitor
Use: to treat Parkinsonโs
What is something important to note about entacapone
(Comtan)
When taken in conjunction with carbidopa-levodopa it lessens the โwearing offโ effects of levadopa
What are some common side effects of drugs used to treat Parkinsonโs
*increased suicidal thoughts ๐ญ *
Fatigue, insomnia Dry mouth Blurred vision Orthostatic hypotension/palpitations/dysrhytmias Urinary retention Nausea, vomiting Dyskinesia/psychosis/severe depression
What is dyskinesia
Uncontrolled, involuntary muscle
Movement
What are some nursing interventions for people taking drugs to treat Parkinsonโs
- monitor for orthostatic hypotension
- avoid excessive vitamin B6 intake (foods like Lima,navy, kidney beans,cereals)
- donโt stop taking them abruptly
- warn of harmless brown discoloration of urine and sweat
- assess for dividing tendencies
- take on regular schedule
- assess symptom status and โon-offโ phenomenon
- monitor blood cell counts, liver and kidney function
- no drivung
What are some causes of dementia
Alzheimer's Stroke AIDS Atherosclerosis Medications Parkinson's
What are the symptoms of Alzheimerโs caused by
The loss of acetylcholine
Name two conditions that cholinesterase inhibitors are used to treat
Hint:from chapters 24 and 23
Myasthenia gravis and Alzheimerโs
What is Alzheimerโs disease characterized by
The loss of cholinergic neurons that secrete acetylcholine
What is the purpose/action of drugs used to treat Alzheimerโs
- increased acetylcholine available at the receptors
- increase cognitive function
Monepril
Aricept
Type: cholinesterase inhibitor
Use: to treat mild to moderate Alzheimerโs
Rivastigmine
Exelon
Slows the disease process
Type: cholinesterase inhibitor
Use: to treat mild to moderate Alzheimerโs
Memantine
Namenda
Type: N-methyl D-aspartate (NMDA) antagonist
Use: to treat later stages of Alzheimerโs
Action: regulates the activity of glutamate, a chemical messenger involved in learning and memory
What are some contraindications of drugs used to treat Alzheimerโs
Reduced kidney or liver function
What are some side effects of drugs used to treat Alzheimerโs
ANVD, dizziness, headache
What are some nursing implications for drugs used to treat Alzheimerโs
- monitor side effects, especially safety related
- evaluate effectiveness
What is a seizure
Abnormal electrical activity in the brain; may result in alteration in consciousness, motor or sensory ability and/or behavior
What is a convulsion
Involuntary, spasms of the large skeletal muscles of the face, neck, arms and legs that may accompany seizures
What is epilepsy
Chronic disorder with recurrent, unprovoked seizure activity
What is status epilepticus
Repeated, unremitting occurrence of a seizure; can cause brain damage and ultimately death
Lasts greater than 5 mins
What are a few things to note about antiepileptics (AEDS)
- stabilize nerve cell membranes and suppress the abnormal electric impulses in the cerebral cortex
- affect concentration and movement of sodium, calcium and chloride ions across the neuronal cell membrane
- depress excitability of neurons by enhancing GABA (inhibitory) receptors
How do antiepileptics work
Suppress abnormal neuron firing
List 8 antiepileptics thatโs suppress sodium influx
Phenytoin (Dilantin) Fosphenytoin Carbamazepine Oxcarbazepine Valporic acid Topiramate Zonisamide Lamotrigine
List 2 antiepileptics that suppress calcium influx
Valporic acid (depakane) Ethosuximide
List 3 antiepileptics that enhance action of GABA
Barbiturates
Benzodiazepines
Tiagabine
List an antiepileptic that promotes GABA release
Gabapentin
How do barbiturates and benzodiazepines work to stop seizures
Increase the action of the neurotransmitter GABA (gamma amino butyric acid)
What type of seizures are barbiturates and benzodiazepines used to treat
Petit/grand mall seizures and status epilepticus
What are some side effects of barbiturates and benzodiazepines in reference to antiepileptics
Drowsiness/CNS effects
Addictive- produce tolerance and withdrawal
Barbiturates: respiratory depression
Phenobarbital
Type: barbiturates
Use: to treat seizures
Diazepam
Valium
Type: benzodiazepines
Used: to treat seizures
Clonazepam
Klonopin
Type: benzodiazepines
Use: to treat seizures
Phenytoin
Dilantin
Type: hydantoins
Action: inhibit sodium influx
Use: to treat seizures
Valporic acid
Depakote
Possible hepatotoxicity, monitor liver enzymes
Not given to children under 12
Type: antiepileptics
What is something to note about Carbamazine
Tegretol
Grapefruit juice can cause toxicity
Type: antiepileptic
Lamotrigine
Lamictal
Type: antiepileptic