Johnston: Rheumatoid Arthritis Flashcards
Systemic features of RA
- fatigue, fever, anemia
- elevated ESR and CRP
- Malaise, myalgia, depression
What is RF produced by?
- RA synovium
- made by B cells
What do RF’s do?
-fix complement
What does complement consumed in RA joint do?
-recruits PMN’s
What is the more specific antibody in RA?
-Anti Cyclic citrullinated peptides
What two lab tests would be most diagnostic for RA?
- RF
- Anti CCP
What imaging would we do for RA?
- X rays of the hands and ffet
- CT is more sensitive detecting erosions
Tx for RA
- Begin NSAID for pain control
- Early use of DMARD
- may need low dose of steroid for a few weeks
- monitor progress and toxicity
when does RA improve?
-during preggo
What age does RA happen at?
-young adults
in the point system for RA, what kinds of joints give the patient a lot of points towards having RA?
-small joints
What is the only part of the axial spine that really gets affected by RA?
-C1 and C2
What part of the hand will almost never be involved with RA?
- the PIP
Swan neck
-hyperextension of PIP joints
Boutonnier
-hyperflexion of PIP joints
What might we find on the extensor surface of the forearm with RA?
-a nodule
What will that nodule on the extensor surface almost always be positive for?
-RF!
What will we see in the wrist?
- radial deviation
- ulnar deviation of the fingers
What will we see in the knees?
- bakers cyst
- popliteal…. may rupture and be painful
What will we see in the neck?
-C1-2 subluxation… dont force into flexion
Clinical manifestations of RA
- pain, swelling, warmth in multiple small joints of the hands and feet
- morning stiffness> one year
- > 10% have abrupt onset of disease
extraarticular manifestations of RA
- subQ nodules on extensor surface of forearm
- more common in RF positive or anti-CCP positive
What is Pyroderma gangrenosum
- tender reddish purple papule
- leads to necrotic, non healing ulcer
- lower extremity
- poor prognosis
Rheumatoid Vasculitis
- purpura, petechial splinter hemorrhages
- digital infarct
Heart in RA
- RA is an independent risk factor for CAD
- HF, pericarditis, CAD due to chronic endothelial inflammation
What is it called when someone has nodular opacities on their lung x ray from a rheumatoid nodule?
-caplan syndrome
What will we see if there is interstitial lung disease?
-clubbing
most common thing with lung
-pleuritis
What is caplan syndrome
-nodular densities after exposure to coal or silica dust
When treating someone for RA, what is something that could happen to the patient that would give them keratoconjunctivitis sicca?
-Secondary Sjogrens syndrome
What antibodies are associated with salivary gland involvement
-Ro and La
What is schirmers test?
-when you take a piece of filter paper and put it under their eyelid to see if they will make tears or not
How do you treat sjogren’s?
- artificial tears
- remember that sjogrens syndrome is seen in 35% of RA patients
What is the most common manifestation of RA involving the eyes?
-keratoconjunctivitis sicca secondary to Sjogrens syndrome
Sjogrens syndrome
- dry everythings
- primary Sjogrens is associated with SS-A (Ro) and SS-B (La) antibodies
- treat symptoms
- anti inflammatory and immunosuppressive