Clin Med II midterm Flashcards
Gene that is genetic risk factor for RA?
HLA-DRB1 gene
Risk factors for RA?
Smoking
HLA-DRB1 gene
female>Male
age 25-55
Which tissue type is main target for autoimmune process of RA?
Synovial Tissue
________ is formed from synovial proliferation. It invades & destroys bone and cartilage
Pannus
Clinical manifestations in joints
insidious onset
morning stiffness >30 min, or after inactivity
SYMMETRIC swelling
joint are tender/painful
Joints most often affected by RA?
PIP
MCP
MTP
wrists, ankles, knees
Clinical manifestations of the hands in RA?
Ulnar deviation of MCP joints (classic)
Swan neck deformity
Boutonniere deformity
General clinical manifestations
fatigue
Weight loss
low grade fever
_________ __________ are almost only found in those who are RF positive. Often on extensor surfaces, over joints, or pressure points.
Rheumatoid Nodules
T/F: Rheumatoid nodules are soft and tender.
false. firm and non-tender
Ocular manifestations of RA
keratoconjunctivitis
scleritis
episcleritis
scleromalacia
Pulmonary manifestations of RA
pleuritis
Pleural effusions
Rheum Nodules
interstitial lung disease
Cardiac manifestations of RA
increased risk of CV disease
pericardial effusion
pericarditis
Felty Syndrome is not so rad.
Neutropenia
Splenomegaly
RA
What is the most specific blood test for RA?
Anti-CCP antibodies
Labs to order for RA?
Anti-ccp
RF
ESR/CRP
CBC
What would you see in the synovial fluid in RA?
Inflammatory effusion
Leukocytes 15k-25k with PMN predominate
T/F: you can see early findings of RA on x-ray.
False. Early in disease they are likely normal appearing
Intial findings on x-ray for RA
soft tissue swelling
osteopenia around joint
Where could you see early changes in RA?
earliest changes show in the wrists or feet
Changes you would see later on x-ray?
Joint space narrowing and erosions
T/F: for a dx of RA you must >or= 2 joints having inflammatory arthritis
False: >or=3 joints
Goals of treatment for RA include early Dx and initiation of _________ drugs? Name some others as well.
DMARDs (disease modifying anti-rheumatic drugs) Control of pain and inflammation preserve function prevent deformity refer to rheumatology
How long must a patient have had sx before you can dx RA?
> or = 6 weeks
RA patients often need a combination of what medications?
Methotrexate + TNF inhibitor
What pretreatment screening must you do for RA?
Hep B & C Check for latent TB R/O prego Baseline radiographs Baseline labs (CBC, Cr, LFTs,
T/F: corticosteroids are very helpful for both symptom relief and slowing the rate of joint damage.
True
T/F: corticosteroids are recommended for mono therapy in RA.
False. Not recommended for monotherapy or long term use
_________ is a good bridge therapy medication to use while starting DMARD therapy.
Corticosteroids: prednisone
Starting dose of Methotrexate?
7.5mg PO weekly
Methotrexate is contraindicated in?
Pregnancy
liver disease
heavy ETOH use
Severe renal impairment
Patients taking methotrexate need to also be taking?
FOLATE everyday
1mg PO
or
Leucovorin 2.5-5mg weekly
S/E of methotrexate?
GI upset
Stomatitis
Labs you need to monitor carefully in patients on methotrexate?
CBC for cytopenias
LFTs for hepatotoxicity
T/F: TNF inhibitors are inexpensive.
False. EXPENSIVE
TNF inhibitors are given____ or _____
SQ or IV
Which TNF inhibitor is usually first choice in RA?
Etanercept (Enbrel)
Recommended follow up for RA?
Use scale to assess sx and function status (pick one and stick with it)
Monitor lab work for tox
Radiographs q2yrs
Poor prognostic factors for pts with RA?
RF or Anti-ccp +
extraarticular disease
functional limitations
erosions on radiograph
What 2 classes of medications are responsible for 2/3 of all hospitalizations related to meds?
Antidiabetic meds
Anticoagulants / antiplatelet meds
Tramadol should not be used in patient with hx of seizure. why?
Lowers seizure threshold
Levemir and lantus are _____ acting
intermediate to long acting
Short acting insulins?
Humalog
Novalog
Initiation of insulin to type 2 DM
Levimir or lantus at morning or bedtime
Fasting BGL check and can increase dose by 2 units q 3 days until fasting target range achieved
Initial dosing of coumadin?
5mg for 1st 2 days or 2.5mg if frail, elderly, kidney/liver disease or meds making warfarin more sensitive
______ is a reduction in bone mass.
Osteoporosis
causes of secondary osteoporosis
Meds
Vit D deficiency
ETOH use
Lifetime osteoporotic fracture risk for women who reach age 50 is? Men?
50%
Men 20%
What is the Frax Algorithm
Fx risk assessment tool
Calcs pts 10 year probability for fx
T/F: you can use the Frax algorithm in patients being treated for osteoporosis?
No, only validated for untreated patients.
Gold standard for Bone Density?
Bone Densitometry (DXA) scan
Who should get DXA scan?
Women>= 65
younger but at risk
Pts c path fx
Radiographic evidence of diminished bone density
Interval btw DXA scans for T score of -1 to -1.5
Every 5 years
Interval btw DXA scans for T score of -1.5 to -2.0
every 3-5 years
Interval btw DXA scans for T score of
every 1-2 years
What is a Z-score
Expresses bone density as a standard deviation from are, race, and sex means
T/F: Most recommendations are based off the T score and not the Z score
True
WHO dx categories
Normal?
T score > -1.0
Who Dx category Osteopenia?
T score -1 to -2.5
WHO Dx category osteoporosis?
T score is less than -2.5
Clinical Manifestations of osteoporosis?
Asymptomatic until fx
Vertebral fx
Signs of vertebral fx
height loss, kyphosis
acute pain
atraumatic fx
Radiographic findings
Radiolucency
Cortical Thinning
Occult fx
How much bone loss is needed to be detected on radiographs?
> 30%
T/F: Radiographs are the most sensitive to find osteoporosis?
No, DEX scan more sensitive
Life style modifications in osteoporosis?
Smoking cessation limit ETOH Reg WB exercise (30min x 3x/week) 1200mg Ca/day avoid falls wear brace
When to treat with bisphophonates?
Hx of hip/vertebral fx
T-score 3% or OP related fx >20%
How much Ca++ intake per day?
1200mg qd
how Much vit D per day?
800units
Ca supplements interfere with ______ and ______ absorption.
Iron and thyroid hormone. Need to take at different times
SE of Ca++ suppliments
nephrolithiasis
CV disease
dyspepsia
constipation