Rheumatoid and Osteoarthritis Flashcards

1
Q

What joints are involved in Rheumatoid Arthritis?

A

HAND JOINTS

  • MCP
  • PIP (NO DIP)

WRIST

ELBOWS

FOOT

  • MTP
  • Mid-Tarsal
  • Cricoarytenoid

CERVICAL SPINE (Vs Lumbosacral in Osteoarthritis)

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2
Q

What 2 deformities are seen in RA?

A

Swan-neck= Hyperextesion of PIP with Flexion of DIP

Boutonniere=Flexion of PIP and Extesion of DIP

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3
Q

What 2 lipid component is often low in RA?

A

Total cholesterol and HDL are low in RA because of inflammtion of the vessel walls

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4
Q

Low BMI in a patient with RA increase what type of risk?

A

Increase CVD risk

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5
Q

Which RA med have the lowest risk of hyperlipidemia?

A

Hydroxycholoroquine

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6
Q

What are some extra-articular manifestions of RA?

A
  1. Rheumatoid Nodules-can be seen in internal organs like the heart and lungs, MTX can increase them dramatically.
  2. Rheumatoid Vasculitis: seen in whites with severe longstanding RA and high titer of RF/anti-ccp
  3. Pleural effusion with very low glucose
  4. Caplan Syndrome= Pulm. fibrosis + pulm nodule+ RA
  5. Eye: Kerattoconjunctivitis sica, episcleritis, and scleritis
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7
Q

What are the manifestations of RA Vasculitis?

A
  • Digital arteritis leading to splinter hemorrhages, mononeuritis multiplex (wrist drop/ foot drop)
  • Visceral arteritis can present as MI, bowel ischemia
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8
Q

What other autoimmune disorder can present with RA?

A

Sjogren

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9
Q

What is Felty’s syndrome?

A

Seropositive RA+ Neutropenia (<500) + Splenomegaly

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10
Q

Renal involvement in RA is due to what?

A

AA amyloidosis presenting as nephrotic syndrome

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11
Q

What does the synovial fluid in RA show?

A
  • TURBID fluid (low viscosity vs high viscosity in OA)
  • Increase protein
  • Low Glucoe
  • WBC >2000
  • Decrease complement
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12
Q

What are the non-biologics used in RA?

A
Methotrexate (1st line)
Leflunomide
Hydroxychloroquine 
Sulfasalazine 
Minocycline
Azathioprine
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13
Q

Prior to starting Azathioprine what should be checked?

A

Thiopurine methyltransferase should be checked as deficiency can lead to toxicity

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14
Q

What are the Biological agents?

A

TNF inhibitors:

  • Etanercept
  • Infliximab
  • Adalimumab
Non-TNF Biologics:
Anakinra (anti-IL 1)
Abatacept (T cell costimulation inhibitor)
Rituximab
Tocilizumab, Sarilumab (Anti-IL 6)
Tofacitinib (JAK inhibitors)
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15
Q

If RA severity remains moderate to high despite MTX monotherapy how should we escalate therapy?

A
1. Combining DMARDS
Or
2. TNF inhibitor +/- MTX
Or
3.Non-biologics TNFi +/- MTX

If diseae activity remains high despite this then add Steroids

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16
Q

Anti TNF inhibitors and Abatacept are contraindicated in what scenarios?

A
  1. Acute bacterial infection, URI with fever >101
  2. Latent TB (treat at least 1 month prior to startingand continue while on therapy), If active TB stops TNF and treat the TB
  3. Active VZV
  4. Previously treated lymphoproliferative disease
  5. CHF
  6. Acute hep B/C
  7. Liver disease with Child Pugh B/C
  8. MS or demyelnating disease
  9. No live vaccines during therapy
  10. Flu shot, pneumonccocal, hep B vaccine should be given prior to therapy if needed
17
Q

Methotrexate and Leflunomide are C/I in what?

A
  1. Acute bacterial infection, URI with fever >101
  2. Latent TB (treat at least 1 month prior to startingand continue while on therapy), If active TB stops TNF and treat the TB
  3. Active VZV
  4. Pulmonary Fibrosis (MTX)
  5. Creatine clearance <30 (MTX)
  6. Acute hep B/C
  7. Liver disease with Child Pugh B/C
  8. Myelodysplastic syndrome, Leukopenia, Thrombocytopenia
  9. Pregnant
18
Q

Rituximab is associated with reactivation of what diseases?

A

Hep B (Prophylaxis with tenofovir or entecavir)

Progressive multifocal leucoencephalopthy

19
Q

TNF inhibitors are associated with reactivation of what infections? and cancers?

A

TB
Disseminated histoplasmosis
Hep B

Cancer

  • Lymphoma in children and adolescents)
  • Non-Melanoma skin cancers in adults
20
Q

TNF inhibitors are associated with what systemic side effects?

A
Cytopenia
CHF
Demyelinating disease
Lupus like syndrome
Hepatotoxicity 
Infusion reaction
21
Q

Which vaccine should be given to RA patient older than 60

A

Zoster vaccine 2 weeks prior to therapy

22
Q

A monoarticular flare in a patient with RA should be approached in what way?

A

as if it is a septic arthritis until proven ortherwise because patients on immunosupressive therapy may not mount a fever or leukocytosis

23
Q

How is RA managed in pregnancy?

A

MTX and LEF are discontinued 90 days prior to conception

NSAID used only during second trimester
Steroid use only after first trimester

Sulfaslazine and Hydroxychloroquine are safe during pregnancy

24
Q

What are the causes of Secondary OA?

A
  • Trauma
  • Metabolic (Hemochromatosis)
  • Endocrine (acromegaly)
  • Inflammatory (OA after RA or ankylosing spondylitis)
25
Q

What are the common sites of OA?

A
FINGER
-DIP (Herbeden's node)
-PIP (bouchards nodes)
-First MCP joint (classic site in females) (base of thumb)
-first MTP joint
SPINE
-lumbosacral
26
Q

When OA is due to hemochromatosis, which joints are classically involved?

A

Second and Third MCP joints

27
Q

What is the most important modifiable risk factor for OA of the knee?

A

Weight Loss

28
Q

How is knee joint OA diagnosed?

A

Knee pain plus 3 of the following:

  1. Age >50
  2. Crepitus
  3. Stiffness lasting <30 minutes
  4. Bone enlargement
  5. No palpable warmth
29
Q

What is Anserine Bursitis and how does it present and treated ?

A

Constant pain and pain with crossing legs, and while lying in a lateral position. Patients often sleep with a pillow in between their legs

Treated with Rest, NSAIDs, steroid injections

30
Q

What does X-ray show in OA?

A

Joint space narrowing and bony overgrowth

Subchondral bony sclerosis

31
Q

How is OA treated?

A
  1. Hand OA
    - Non-Pharm=Exercise
    - Pharm=Oral NSAID or topical NSAID
  2. Knee OA
    - Non-Pharm=Exercise, Weight loss
    - Pharm=Oral NSAID, topical NSAID, Intraarticular injections
  3. Hip OA
    - Non-Pharm=Exercise, Weight loss
    - Pharm=Oral NSAID, U/S guided Intraarticular injections
32
Q

How does Adult Still’s Disease present?And treated?

A
Evanecent salmon colored macular rash
Daily high fever
Sore throat
LAD
Myalgia/Arthralgia
Serositis 

Lab shows High serum Ferritin level, elevated ESR,

Disease may be self-limited or chronic, it is treated with NSAID and aspirin and if severe steroids can be used