rheumatology pharm Flashcards
MC cause of joint disease?
Osteoarthritis
S/s of OA aka DJD
Joint pain/tenderness Decreased ROM Weakness Joint instability Disability
what is OA aka DJD
disease of cartilage with progressive destruction of articular cartilage
Involves the entire diarthrodial joint
what are heberden’s nodes?
distal inter-phalangeal joint noted on all fingers
what are bouchard’s nodes?
proximal interphalangeal joint noted on most fingers.
which type of OA is associated with a known cause?
secondary: Rheumatoid or another inflammatory arthritis Trauma Metabolic or endocrine disorders Congenital factors
but primary (idiopathic) = MC
what are some simple analagesics that are used to tx OA?
Acetaminophen, tramadol, duloxitene, narcotics in selected cases
If a pt cannot take NSAIDs what other meds can they take for OA?
Misoprostol (PPI) or an H2 antagonist or cyclooxygenaes-2-specific NSAID
what ancillary medical and surgical treatment options are available for OA?
corticosteroids injections, hyaluronic acid injections, splints, canes and other orthotics, arthroscopic surgery, osteotomy, total joint replacement
what is the primary objective of medication therapy?
pain relief (MC sx) –> leads to decreased function and motion
what is the initial dose for acetaminophen for pain relief in knee and hip OA?
4g/day in divided doses
*2 for the elderly
if PO acetaminophen fails what can you use to tx OA instead?
TOPICAL or oral non-steroidals
ADE’s from NSAIDs
CNS: HA's, tinnitus, aseptic meningitis CV: fluid retention, HTN, CHF GI: abd pain, N/V, ulcers hematologic: neutropenia hepatic: abn LFT's pulm: asthma skin: pruritis renal: insufficiency, failure, hyperkalemia
what are the contraindications for NSAID’s
Monitoring:
CBC, serum CR, hepatic transaminase levels
Strategies to reduce GI toxicity?
nonacetylated salicylates: choline and magnesium
cox-2 selective inhibitors
misoprostol or PPI
which NSAIDs increase the risk of CV risk?
COX-2 selective inhibitors can increase the risk
who are topical NSAIDs recommended for?
for patients older than 75 years to decrease the risks of systemic toxicity
Ketoprofen = MC
Others:
Tramadol
Intraarticular injections of corticosteroids
Duloxetine
what is the MC systemic inflammatory dz characterized by symmetrical joint involvement?
Rheumatoid arthritis
involves extra-articular
what are some targets of drug therapy?
TNF’s and interleukins
fibroblasts
macrophages
MMP’s (matrix metalloproteinases)
what is the biggest tx difference between OA and RA?
no NSAIDs included in RA treatment algorithm
goal of RA treatment
“Treat to Target” –> achieve remission or low disease activity
by reducing inflammation using drugs known to alter disease progression
what are some classic RA deformities?
Marked ulnar deviation, swan-neck deformity, active synovitis, and nodules.
what should you start w/in 3 mo’s of dx of RA?
Disease-modifying antirheumatic drugs (DMARDs) or biologic agents
when can you use NSAIDs and/or corticosteroids in RA?
considered adjunctive therapy early in the course of treatment and as needed if symptoms are not adequately controlled with DMARDs
what if the DMARD you prescribed is failing?
combination therapy with two or more +/- biologic agent may be used
how can you prevent irreversible joint damage and disability?
Early aggressive treatment
when would you tx an RA pt with oral agents as monotherapy?
less active disease and good prognostic indicators
RA: who are candidates for combo therapy and biologics to suppress inflammation?
high disease activity and/or poor prognostic features
what are some nonbiologic DMARD used in RA?
Methotrexate Leflunomide Hydroxychloroquine Sulfasalazine Minocycline Tofacitinib
adujunct: +/- NSAIDs and corticosteroids