General Flashcards

1
Q

Rx non-renal SLE

A

Mild/moderate
Hydroxychloroquine +/- pred

Moderate
Azathioprine or MTX
- Azathioprine in childbearing age/pregnancy. Otherwise MTX is probably a bit better.

Severe
Mycophenolate (more for renal SLE) - very potent
Rituximab
Cyclophophsmiade

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2
Q

Anti-dsDNA in SLE

A

very specific, can correlate with disease activity, high result suggests renal disease

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3
Q

Anti-SM positive in SLE

A

Very specific

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4
Q

Main differences between SpA and DISH

A

SpA

  • Younger people before age 45
  • History of psoriasis, IBD, uveitis, dactylitis
  • FHx
  • Inflammatory back pain or stiffness
  • Postural abnormalities
  • Response to NSAIDs
  • Xray:

DISH

  • Asymptomatic
  • Found on xray - continuous bulky calcificat of the anterior longitudinal ligaments
  • Cervical and thoracic spine
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5
Q

What is Livedo racemosa?

A

Similar to livedo reticularis

Lace is contained in livedo racemosa but broken in reticularis

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6
Q

What is polyarteritis nodosa?

A

Raised inflammatory markers
Renal impairment
CT small vessel aneurysms
Livedo racemosa

No available autoantibody screening test

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7
Q

Febuxostat vs allopurinol

A

Both xanthine oxidase inhibitors

Febuxostat

  • Can cause LFT derangement
  • Drops uric acid very quickly (more likely to have flares) so important to have people on prophylaxis colchicine 500microg BD (eGFR >60). If renal function is bad, may need pred.
  • ?Higher CV events
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8
Q

Uric acid targets for tophi and non-tophi gout

A

Tophi: <300micromol/L

Non-tophi: <360micromol/L

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9
Q

When to start febuxostat?

A

Better for renal impairment
Not tolerating uptitration of allopurinol
Allopurinol hypersensitivity syndrome

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10
Q

How to start allopurinol?

A

Uptitrate allopurinol up to 900mg first - increase 100mg each month if renal function normal until uric acid level is at target

Start prophylaxis (colchicine) at the same time. Continue until you reach target for 6 months.

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11
Q

When to avoid colchicine?

A

eGFR <30: don’t use colchicine. Use pred instead.

eGFR 30-60: daily dosing instead of BD

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12
Q

When can you start allopurinol after a flare?

A

Can start during the acute attack

Bad flare and on prednisolone/NSAIDs - wait for flare to turn around and start allopurinol after 3-4 days (100mg if no renal impairment; dose reduce if renal impairment)

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13
Q

Rx acute gout flare

A

Prednisolone and NSAIDs work equally well

Can hit them harder with prednisolone (up to 50mg for polyarticular gout)
Need to be careful with NSAIDs in kidney impairment

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14
Q

Can you get total resolution of tophi with good serum uric acid control?

A

Yes
Can take several years

Can also have surgical management but this must be done after good serum uric acid control. If not it will come back quickly.

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15
Q

Dual energy CT for gout

When is it used?

A

Not that helpful
Can’t rely on it diagnostically
Poor sensitivity, specificity

Can quantify the amount of uric acid in a joint e.g. 20ml

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16
Q

GCA is pretty rare under age …

A

50

Few case reports around the world!

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17
Q

What’s a specific sign of GCA?

A

Jaw claudication

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18
Q

Why should we do bilateral temporal artery biopsies for GCA?

A

Biopsy of the contralateral temporal artery can increase the yield by 15%

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19
Q

What might you see on ultrasound of temporal artery suggesting GCA?

A

Halo sign

But US is generally not useful cause its not done often

20
Q

Does steroids influence temporal artery biopsy outcome?

A

TAB should be performed ASAP after steroid treatment (Within 14 days)
But it can be positive even after weeks of steroids

21
Q

How big should the temporal artery biopsy be?

A

2.5cm or more

22
Q

High suspicion for GCA but negative temporal artery biopsy

What do you do?

A

Start

PET - large vessel vasculitis but no cranial nerve involvement

23
Q

Should we screen GCA patients with aortic aneurysm?

A

No

This is controversial some rheumatologists do

24
Q

Why do we use aspirin in GCA?

A

Secondary prevention
Pred increases hypertension, cholesterol, BSLs

Continue until pred is finished (or continue if there are risk factors)

25
Q

Tozolizumab in GCA

When is it indicated?

A

Subcut weekly injections
Not PBS covered

But can be used in patients with brittle diabetes and you’re worried about using prednisolone

26
Q

Describe lefluonamide induced neuropathy

A

Symmetrical
Hands and feet
Motor and sensory neuropathy

27
Q

Anti-MDA5 antibody in polymyositis

A

Rapidly progressively lung disease

28
Q

What disease?

1) AntiCCP
2) AntiSM
3) AntiScl70
4) AntiDNA
5) RF
6) Anti-centromere
7) Anti-Jo
8) Anti-RNP
9) Ro and La

A

RA - specific

SLE - specific

Diffuse scleroderma

SLE - particularly worsening disease or renal

RA - not very specific

limited scleroderma (more benign than diffuse)

Anti synthetase syndrome (muscle, lung, joint problem)

Mixed CT disease

Sjogren’s but not very specific

29
Q

Which feature has the worst prognosis in anti synthetase syndrome?

A

Dysphagia

30
Q

How do you differentiate SpA from mechanical back pain?

A

morning stiffness*** most useful
younger men
Buttock pain

31
Q

HLAB27 is present in ….% of SpA

A

90%

But also present in 10% of normal people without SpA

32
Q

Which investigation is best to support a diagnosis of SpA?

A

Xray sacroiliac joints

33
Q

What 3 tests rule out SpA?

A

Normal sacroiliac xray
Normal MRI
Negative HLAB27

34
Q

Is colchicine good for acute flare of gout?

A

No
Better as a prophylaxis
May use colchicine for 24hrs if worried about infection until joint MCS comes back

Use NSAIDs or prednisolone if renal impairment instead

35
Q

Radiological pattern of ILD in the following

1) RA
2) MCTD
3) SSc
4) Ankylosing spondylitis
5) Sjogren’s

A

1) UIP >NSIP >OP
2) NSIP/OP >UIP
3) NSIP >UIP
4) Upper lobe fibrosis
5) NSIP >LIP (lymphocytic interstitial pneumonitis - seen exclusively in Sjogren’s)

36
Q

4As in anklylosing spondylitis

A

Apical fibrosis
Aorta incompetence
A

37
Q
Lupus pernio (rash on face)
What's the dx?
A

Sarcoidosis

38
Q

Livedo reticularis vs livedo racemosa

A

Livedo reticularis - closed rings - venous problem

Livedo racemosa - open rings - arteritis problem

Retiform purpura - tissue ischaemia, death

39
Q

Polyarteritis nodosa associated with

A

HBV

40
Q

Which rheum drugs are safe in pregnancy?

A

PASH

Pred
Azathioprine
Sulfasalazine
HCQ

41
Q

Glucocorticoid-induced OP

What’s the only available therapy?

A

Bisphosphonates

Blocks osteoclast-mediated bone resorption

42
Q

Clinical features of PMR

A

Shoulder, neck, lumbar, hip pain/reduced ROM
Prolonged morning stiffness
Muscle strength normal but testing limited by pain
Associated with depression, fatigue, weight loss

43
Q

Age of people with PMR

A

> 50 years old

44
Q

Investigations in PMR

A

Elevated CRP, ESR
Negative RF, CCP to exclude sero+ RA
SPEP to exclude myeloma
CK to exclude myositis

45
Q

Immunology of PMR

A

IL6 is important

Increased Th17, and reduced Th1 and Treg cells

46
Q

What assessment tools can you use to assess severity of PMR?

A

PMR activity score

Can be used to define a flare and to guide treatment

47
Q

Treatment of isolated PMR

A

Prednisolone 15mg/day then slow wean after 4 weeks
Respond within 48-72hr
May get relapses during wean