Treatment of Osteoarthritis Exam 1 Flashcards
What are the possible treatment for OA?
- NSAIDs
- APAP
- Opioids
- Tramadol
- Duloxetine
- ASA
monitoring parameters for NSAIDs
- edema
- weight
- urinalysis
- Cr (renal function)
- CBC
- GI discomfort
- K levels
- LFT’s
- CNS effects
- skin reactions
monitoring parameters for APAP
Live function (LFTs)
monitoring parameters for opioids
- weakness
- fractures
- falls
monitoring parameters for tramadol
- seizure episodes
- QT interval
- diaphoresis
- myoclonus
- shivering
- fever
- tachycardia
- semicomatose
monitoring parameters for duloxetine
CNS effects
monitoring parameters for ASA
- CBC
- GI discomfort
What are the non-drug treatment of OA?
- pt education and self-mgmt
- social support
- diet + weight reduction
- PT / OT
- surgery
- genetic manipulation
- misc. therapies
What are examples of PT / OT?
- Low impact aerobic exercise
- Assistive devise
- Joint protection
- Heat
- TENS
What are examples of supplements that patients may take?
- fish oil, evening primrose oil vitamins or minerals; herbal pills (may contain corticosteroids); honey and apple cider vinegar; golden raisins and gin
- Flavocoxid (Limbrel) – medical food (inhibits COX 1 & 2 & lipoxygenase); reports of acute liver injury
What are the types of surgery that can be performed?
- joint debridement
- osteophyte removal
- joint replacement
- joint fusion
What are misc non-drug therapies?
- relaxation therapy
- massage
- prayer
- copper bracelet
- magnets
- DMSO
- urine injections
- WD40
- bee stings
- ant or snake venom
- acupuncture / acupressure
- balneotherapy (thermal mineral baths)
- mud packs
- topical marijuana
Acetaminophen (Tylenol) dosing
Limit to 650 mg/dose, 3250 mg/d; if pt has liver disease, restrict to 2g/day
Tramadol (Ultram) clinical pearls
- decreases seizure threshold
- can prolong QTc interval
- risk for serotonin syndrome if used with tricyclic antidepressants or selective serotonin reuptake inhibitors
Duloxetine (Cymbalta)
- FDA-approved for OA
- affects CNS pain pathways
MOA of NSAIDs
- if non-selective, block COX 1 and 2
- some NSAIDs can inhibit the lipoxygenase pathway but not proven to be better than other NSAIDs
COX 1
found in most tissues esp gastric mucosa
COX 2
increased during inflammation and regulates prostacyclin
NSAIDs and pregnancy
Avoid NSAIDs late in pregnancy because may inhibit labor and possibly cause early narrowing of the ductus arteriosus
NSAID contraindications
- Celecoxib is contraindicated in patients with sulfonamide allergies
- NSAIDs contraindicated in patients with recent coronary artery bypass grafts (CABG)
absorption of NSAIDs
Rapid
distribution of NSAIDs
- Highly plasma protein bound primarily to albumin
- exceptions: ASA, lipid soluble NSAIDs, weak acids
metabolism of NSAIDs
- Main elimination route
- Hepatic biotransformation
excretion of NSAIDs
< 10%