Rheumatology Flashcards
gout is characterized by a serum uric acid
> 6.8 mg/dL
which disease states can increase risk of gout (7)
T2DM, hyperlipidemia, obesity, renal insufficiency, HTN, organ transplant, CHF
which foods increase risk of gout (5)
meat, seafood, beer, soft drinks, fructose
which foods decrease gout risk (3)
coffee, dairy, vit C
which medications increase gout risk (4)
thiazides, loops, nicotinic acid, aspirin
which medications lower gout risk (2)
losartan, fenofibrate
which 4 things can precipitate a gout flare
alcohol or high purine ingestion, stress, meds
3 drugs used for acute gout management
NSAIDs, colchicine, steroids
colchicine need dose adjustment for
renal & hepatic
AEs of colchicine
GI, hematologic, rhabdo
strong CYP3A4 inhibitors that interact with colchicine?
how to adjust dose?
clarithromycin, itraconazole, ketoconazole, darunavir/ritonavir
1/2 the doses
moderate 3A4 inhibitors that interact with colchicine?
how to adjust dose?
diltiazem, erythromycin, fluconazole, verapamil
single 1.2 dose for flares, prophy dose is 1/2 QD or QoD
p-gp inhibitors that interact with colchicine
how to adjust dose?
cyclosporine, amiodarone, ranolazine
single 0.6 for flare, prophy dose 1/2 QD or QoD
intraarticular steroid dose for large, medium, small joint?
lg- 40 mg
med- 30 mg
sm- 10 mg
2 xanthine oxidase inhibitors used chronically for gout
allopurinol, febuxostat
starting dose for allopurinol and how increase dose
start 50-100 mg QD and inc Q3-5W until achieve goal SUA
AEs of allopurinol
rash, DRESS
which medications can increase the risk of rash when taking allopurinol
amoxicillin, ampicillin, thiazides, ACEi
what should you do if you get a rash from taking allopurinol
d/c the drug
aside from drugs causing rash, which medications have a DDI with allopurinol
warfarin, 6-MP, azathioprine, theophylline
dose of febuxostat
40 mg to start and can increase to 80 mg QD if not at goal after 2 weeks
AEs of febuxostat
HA, arthralgias, abdominal pain, nausea, abnormal LFTs, flushing, dizziness
BBW febuxostat
CV death
DDI with febuxostat
concurrent 6-MP, azathioprine, theophylline