Week 2 - MSK Rheumatology Formative Flashcards
Which of the following is NOT a recognised feature of anti-phospholipid syndrome
Select one:
a. livedo reticularis
b. thrombocytosis
c. migraine
d. recurrent pregnancy loss
e. venous thrombosis
Thrombocytosis
APS - Coag defects, Livedo reticularis, Obstertrics (recurrent miscarriages typically 2nd/3rd trimester), Thrombocytopenia
Thrombocytopenia (as well as neutropenia and lymphopenia) are features of most connective tissue diseases (with the exception of rheumatoid arthritis)
. In rheumatoid arthritis thrombocytosis and a moderate neutrophilia can occur as markers of inflammation).
Which of these autoantibodies is most specific for SLE?
Select one:
a. Anti-DNA binding antibody
b. Anti-Scl-70
c. Anti-Ro antibody
d. Anti-nuclear antibody
e. Anti-smooth muscle antibody
Anti-DNA binding antibody
In SLE when disease is active complement levels rise
Select one:
True
False
False
Complement is consumed in the response to the formation of immune antigen/antibody complexes. Low levels are a sign of SLE being active
In SLE, patients will likely be on oral steroids long term
Select one:
True
False
False
Steroids should only be used when required and for short periods to suppress disease activity whilst other agents are introduced. Long term use of steroids is associated with an increased risk of cardiovascular disease, T2 diabetes and osteoporosis amongst others.
Which would be the most appropriate first test to do in a patient with suspected SLE?
Select one:
a. MRI brain
b. Urinalysis
c. Renal biopsy
d. Anti-mitochondrial antibody
e. Nerve conduction studies
Urinalysis
It is essential to screen for renal disease in SLE and urinalysis is a simple bedside test. If there is evidence of blood or protein in the urine then further investigations such as renal biopsy may be indicated.
Anti-mitochondrial antibody is associated with Primary Biliary Cirrhosis.
MRI brain and nerve conduction studies may be performed in a patient with SLE displaying neurological symptoms.
A patient is diagnosed in the respiratory clinic as having pulmonary fibrosis. The chest physician notes that she has Raynaud’s phenomenon, dry eyes, facial telangiectasia and puffy hands. What is the most likely diagnosis?
Select one:
- a. Diffuse systemic sclerosis
- b. Primary Sjogren’s syndrome
- c. Systemic lupus erythematosus
- d. Limited systemic sclerosis
- e. Rheumatoid arthritis
Diffuse systemic sclerosis
This complex is most suggestive of diffuse systemic sclerosis. Pulmonary fibrosis is less likely in limited systemic sclerosis and primary Sjogren’s syndrome.
Which of the following is NOT a recognised feature of limited systemic sclerosis?
Select one:
a. Raynaud’s phenomenon
b. Butterfly rash
c. Anti-centromere antibody
d. Calcinosis
e. Pulmonary hypertension
Butterfly rash
- Butterfly rash is classically a feature of systemic lupus erythematosus.
- Although not included in the previous acronym ‘CREST’ pulmonary hypertension is the most serious complication of limited systemic hypertension.
- Anti-centromere antibodies, Raynaud’s phenomenon and calcinosis are all characteristics of limited systemic sclerosis.
Which of the following tests may help in the diagnosis of Sjogren’s syndrome?
Select one:
a. Schilling test
b. Schubert’s test
c. Schirmer test
d. Schrodinger’s test
e. Schober test
Schirmer test
Schirmer test involves placing a strip of filter paper under the lower eye lid to assess tear production.
Schober test is a measure of spinal flexion in ankylosing spondylitis. Schilling test is a test to measure Vit B12 absorption.
Schrodinger described a thought experiment in quantum physics.
Schubert was a composer.
A 69 year old woman complains of pain at the base of her thumbs. On examination she has bony swelling of her thumb carpometacarpal (CMC) joints and finger DIP joints. Blood tests show a positive ANA and a positive anti-RNP antibody. Hand radiographs show loss of joint space, subchondral sclerosis, subchodral cysts and osteophytes at thumb CMC and finger DIP joints. What is the most likely cause of her joint pain.
- a. Mixed connective tissue disease
- b. Limited systemic sclerosis
- c. Systemic lupus erythematosus
- d. Primary Sjogren’s syndrome
- e. Osteoarthritis
Osteoarthritis
The clinical and radiological features are classic for osteoarthritis.
False positive immunological tests are common and immunology should only be checked if there is reason to suspect a connective tissue disease. If the immunology was relevant then the immunology would be most consistent with SLE or MCTD.
Which of the following best describes the therapeutic approach to connective tissue diseases? Select one:
- a. Physiotherapy and if necessary surgery to stabilise the joints
- b. Discharge to general practitioner with a request for rereferral if major organ involvement occurs
- c. Immunosuppression with an aim to normalise antibody levels
- d. Treat symptomatically and monitor closely for major complications
- e. Start high dose steroids on diagnosis
Treat symptomatically and monitor closely for major complications
Treatment should be tailored to the individual patient (although generally in SLE hydroxychloroquine would be started routinely).
However, close monitoring to identify complications early is necessary.
Approximately what percentage of patients with rheumatoid arthritis are NEGATIVE for serological rheumatoid factor?
Select one:
- 50%
- 15%
- 1.5%
- 85%
- 25%
Rheumatoid arthritis is the most prevalent seropositive inflammatory arthropathy although around 15% of patients with the disease are negative for serological Rheumatoid factor.
You’re a GP and a 65 year old man attends for review of a painful right first MTP joint. On examination, the joint is red, warm and swollen and there is a white, chalky material discharging from the joint.
What is the most likely radiological picture associated with this presentation?
Select one:
- A hyperthrophic arthritis
- An erosive arthritis
The most likely diagnosis for this patient based upon the clinical information available is gout.
This crystal arthopathy is associated with erosive joint changes.
Which of the following tests is not useful in a patient who presents with symmetrical, small joint swelling. On examination there is a nodule on his elbow but there are no other skin changes. Systemic examination reveals features of pulmonary fibrosis. Select one:
- a. Hand and feet X rays
- b. Anti-CCP antibody
- c. Chest X-ray
- d. Anti-ds DNA antibody
- e. PV and /or CRP
Anti dsDNA antibodies
PV and CRP are not specific for any condition but may suggest inflammation.
A chest x-ray may reveal pulmonary fibrosis.
Anti CCP antibodies are specific for RA which is what seems likely from the clinical picture.
X-rays may give prognostic information in rheumatoid arthritis.
Anti dsDNA antibodies are useful for SLE diagnosis
Which part of the joint is the primary site of inflammation in rheumatoid arthritis?
Select one:
a. Bone
b. Capsule of the joint
c. Tendon attachment to the bone
d. Cartilage
e. Synovium
Synovium
Synovium is the primary site in RA.
Cartilage changes are primarily seen in osteoarthritis.
Entheses regions (tendon or ligament attachment to bone) are effected mainly in psoriatic arthritis.
There is no auto-immune systemic disease that affects bone or capsule.
Which of the following are included in the Modified New York criteria for diagnosis of Ankylosing spondylitis?
Select one or more:
- a. Back pain worse at rest relieved by movement
- b. Back pain for >3 months
- c. X ray changes of sacroiliitis
- d. Back pain worse on movement relieved by rest
- e. Age >45 years
Back pain worse at rest relieved by movement
Back pain > 3 months,
X ray changes of sacroiliitis
Patients with ankylosing spondylitis tend to be younger at onset, typically under 45 years.
- Inflammatory back pain is typically worse at rest, and better on movement, which is the opposite of mechanical back pain