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Cyclooxygenase Inhibitors
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COX-2 VS. COX-1
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What does COX-2 do?
- "injury induced" effects
- inflammation
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What does COX-1 do?
- "housekeeping effects"
- protects and promotes
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What does COX-2 inhibition do?
- Decreases inflammation and pain
- MI and renal impairment
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What does COX-1 inhibitions do?
- protects against MI and stroke
- GI erosion and renal impairment
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Inflammatory Group
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1st Generation
- Cox-1 and COX-2
- NSAIDs
- reduces pain, fever, and inflammation
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What are some AEs?
- Gastric ulcers, bleeding, renal impairment
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2nd Generation
- COX-2
- Celecoxib
- decreases pain, fever, and inflammation with less AE
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less safe than 1st generation
- ↑MI
- ↑ stroke
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What are some common NSAIDs?
- Ibuprofen
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Ketorolac
- Ketorolac has similar pain relief to morphine
- Celecoxib
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What are common uses for NSAIDs?
- RA, OA, fever, dysmenorrhea, bursitis, and tendinitis
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What are some common side effects of NSAIDs?
- GI upset (N/V/D and pain)
- MI and stroke
- renal impairment
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What are some considerations?
- take with food to minimize GI upset
- RENAL
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Non-inflammatory group
- decreases pain and fever but not inflammation
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What drug belongs to this group?
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Acetaminophen (Tylenol/Ofirmev)
- What is the MOA?
- reduces prostaglandin synthesis in CNS
- What are some common uses?
- pain and fever
- What are some common AE?
- anaphylaxis
- hepatotoxicity
- What is the antidote?
- Acetylcysteine
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Rheumatoid Arthritis Drugs
- RA: chronic, inflammatory type of arthritis that is an autoimmune disease
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What types of meds are taken for RA?
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NSAIDS
- rapid relief
- does not prevent joint damage or slow disease progression
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Glucocorticoids
- rapid relief
- slows disease progression
- short term use only
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DMARDs
- slows disease progression
- reduces joint destruction
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Non-biologic
- What is the action?
- Suppresses immune response and associated inflammation
- What is the effect?
- clinical responses develop slowly
- Sulfasalazine
- What class is it?
- Non-biologic DMARD
- What is the MOA?
- uses 6-amino salicylic acid to control chemical mediators of the inflammatory response
- What are the uses?
- RA
- IBD
- What are the AE?
- GI upset (N/V/D, pain, anorexia)
- Pruritis
- Rash
- Hepatitis
- Are there any other considerations?
- ⚠LIVER DAMAGE⚠
- ⚠SULFA ALLERGY⚠
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Biologic
- What is the action?
- Targets specific components of immune response
- What is the effect?
- suppresses the immune system
- ⚠ susceptible to serious infections⚠
- Etanercept
- What class is it?
- Biologic DMARD
- What is the MOA?
- inhibits inflammation through neutralization of TNF by preventing TNF from interacting with natural receptors in synovium
- What are the uses?
- RA and other types of arthritis
- What are the AE?
- mild inflammation at injection site
- HF
- liver injury
- CNS demyelination
- Rituximab
- What class is it?
- Biologic DMARD
- What is the MOA?
- targets CD20 proteins to deplete positive B cells via cell lysis and apoptosis
- What are the uses?
- RA
- What are the AE?
- flu-like symptoms
- HTN
- MI
- Cardiogenic shock
- Bronchospasm
- What are the considerations
- Premedicate IV with glucocorticoid, antihistamine, and acetaminophen
- Abatacept
- What class is it?
- Biologic DMARD
- What is the MOA?
- T-cell activation inhibitor → binds with receptors on APC to reduce T cell activation
- What are the AE?
- H/A
- URI
- Nasopharyngitis
- Nausea
- What considerations are there?
- No live vaccines during treatment and for 3 months after stopping
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Gout
- Form of arthritis characterized by increased uric acid levels
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Flare Ups
- NSAIDs
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Glucocorticoids
- prednisone
- trimethacolone
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Colchicine
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What class is it?
- Anti-inflammatory
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What is the MOA?
- Inhibits leukocyte infiltration by disrupting microtubules required for cellular motility and cell division
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What are the uses?
- acute gout attack
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What are the AE?
- N/V/D
- abdominal pain
- myelosuppression
- myopathy
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What should be assessed?
- Cardiac, renal, hepatic, and GI function
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Preventative
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Allopurinol
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What is the class?
- Xanthine oxidase inhibitor
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What is the MOA?
- Inhibits uric acid formation by inhibiting xanthine oxidase
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What are the AE?
- mild GI reaction
- drowsiness
- H/A
- metallic taste
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What are some considerations?
- monitor vision
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Probenecid
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What class?
- Uricosuric
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What is the MOA?
- Facilitates uric acid excretion by the kidneys → inhibits reabsorption of uric acid by the renal tubules
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What are the AE?
- Mild GI reaction
- Renal injury
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Pegloticase
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What class is it?
- Recombinant uric acid oxidase
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What is the MOA?
- Converts uric acid to allantoin which can be excreted by the kidneys
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What are the AE?
- Anaphylaxis within two hours
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What considerations are there
- Premedicate with antihistamine, acetaminophen, and IV glucocorticoid
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Headaches
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Migraines
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What abortive medications are there for migraines?
- Sumatriptan
- Ergotamine
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What preventative medications are there for migraines?
- Amitriptyline
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Cluster
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What abortive medications are there for cluster headaches?
- Sumatriptan
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What preventative medications are there for cluster headaches?
- Ergotamine
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Tension Headaches
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What abortive medications are there for tension headaches?
- NSAIDs and Acetaminophen
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What preventative medications are there for tension headaches?
- Amitriptyline
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Sumatriptan
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What class is it?
- Serotonin receptor agonist
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What is the MOA?
- binds to receptors on intracranial blood vessels and causes vasoconstriction and decreased perivascular inflammation
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What are the AE?
- Heavy arms
- Chest pressure
- Coronary vasospasm in patients with CV history
- teratogenic
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What considerations are there?
- FETAL HARM
- Discuss contraceptives
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Ergotamine
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What class is it?
- Ergot Alkaloid
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What is the MOA?
- Selectively binds and activates serotonin receptors located on intracranial blood vessels, resulting in vasoconstriction and reducing blood flow in the cerebral arteries
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What are the adverse effects?
- Dependence
- Contraindication for those with hepatic or renal impairment, sepsis, CAD, PAD, and uncontrolled HTN
- Fetal harm
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Muscle Spasm
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Cyclobenzaprine
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What class is it?
- Centrally acting skeletal muscle relaxer for muscle spasms
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What is the MOA?
- acts primarily within the brainstem to reduce tonic somatic motor activity
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What are the AE?
- CNS depressant, anticholinergic effects, dysrhythmias
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Spasticity
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Baclofen
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What class is it?
- Centrally acting muscle relaxer for spasticity
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What is the MOA?
- Acts within the spinal cord to suppress hyperactive reflexes involved in regulation
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What are the AE?
- Drowsiness, dizziness, weakness, constipation, urinary retention
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Sedatives and Opioids
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Zolpidem (Ambien)
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What class is it?
- Hypnotic sedative
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What is the MOA?
- Potentiates GABAs affects via selective agonism at the benzodiazapine-1 receptor to increase chloride conductance to help with insomnia
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What are the AE?
- CNS depression, complex sleep behaviors, hallucinations, delirium
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Alprazolam (Xanax)
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What class is it?
- Benzodiazepine
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What is the MOA?
- Potentiates GABAs effects by increased neuronal membrane permeability of chloride ions
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What are the uses?
- Anxiety
- Acute vertigo
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What are the AE?
- CNS and respiratory depression, anterograde amnesia, and abuse
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What are some considerations?
- ANTIDOTE: IV Flumazenil (Romazicon)
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Morphine
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What class is it?
- Pure Agonist Opioid Analgesic
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What is the MOA?
- Acts primarily on mu receptors to mimic endogenous opioid peptide actions
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What are the uses?
- Anxiety
- MI
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What are the AE?
- Respiratory depression, constipation, emesis, urinary retention, sedation, orthostatic hypotension, and abuse
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Fentanyl
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What class is it?
- Pure agonist opioid analgesic
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What is the MOA?
- Acts primarily on mu receptors to mimic endogenous opioid peptide action
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What are the uses?
- Surgical analgesia, rapid sequence intubation and ICU sedation
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What are the AE?
- Respiratory depression, constipation, emesis, urinary retention, sedation, orthostatic hypotension, and abuse
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Codeine
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What class is it?
- Moderate to strong opioid agonist
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What is the MOA?
- Acts primarily on mu receptors to mimic endogenous opioid peptide actions
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What are the AE?
- Similar to morphine but not as bad
- Excessive sleepiness, breathing difficulties, lethargy, and poor feeding in infants from nursing mothers on Codeine
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Tramadol (Ultram)
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What class is it?
- Opioid/Non-opioid
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What is the MOA?
- Pain relief through weak mu agonist activity and block of norepinephrine and serotonin reuptake
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What are the AE?
- Respiratory depression is low and rare, serotonin syndrome if administered with agents that enhance serotonergic transmission
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What are some considerations?
- Monitor closely
- Educate pts on use with SSRI, SNRI, tricyclic, MOAI, and triptan medications
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Methadone
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What class is it?
- Long acting pure agonist
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What is the MOA?
- Acts primarily on mu receptors to mimic opioid peptide actions
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What are the uses?
- Maintenance treatment of opioid use disorder, short-term supervision of opioid withdrawal
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What are the AE?
- Similar to morphine, prolonged QT interval, and fatal dysrhythmias
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What are some considerations?
- Obtain a baseline ECG
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Buprenorphine/Naloxone (suboxone)
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What class is it?
- Agonist/antagonist opioid analgesic
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What is the MOA?
- Both agonist and antagonist actions at mu receptors and antagonist action at kappa receptors
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What are the uses?
- Pain relief for those with an opioid use disorder
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What are the AE?
- Mild respiratory depression, prolonged QT interval, and fatal dysrhythmias
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What are the considerations?
- Obtain a baseline ECG
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Naloxone
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What class is it?
- Competitive Antagonist
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What is the MOA?
- Antagonist at opioid receptors that blocks opioid action
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What are the considerations?
- Short half-life
- onset of pain