Rheumatology Flashcards
1
Q
OSTEOARTHRITIS
- What is Osteoarthritis?
- What are the risk factors?
- What are the X-Ray changes associated?
- What are joints are commonly affected?
- What signs may be seen in hands?
- What is the stepwise management?
A
- A non-inflammatory condition of “wear and tear”
- Being elderly, female, obese, genetics, overuse, injury
- Loss of joint space, osteophytes, subchondral cysts, subchondral sclerosis
- Hips, knees, DIPs, MCPs, Cervical spine, Wrist, Sacroiliac joints
- Heberden’s nodes (DIP), Bouchard’s nodes (PIP), weak grip, reduced range of motion
- Help with weight loss, advice, muscle strengthening exercises initially. Then oral paracetamol and topical NSAIDs and topical Capsaicin. Then oral NSAID and PPI. Then opiates and codeine
2
Q
OSTEOPOROSIS
- What is Osteoporosis and Osteopenia?
- What are the risk factors?
- What medications are a risk factor for Osteoporosis?
- What patients should be assessed for Osteoporosis?
- What are some baseline investigations for assessing Osteoporosis?
- What is the FRAX Tool?
- What are results of FRAX Tool if BMD is assessed?
- What are results of FRAX Tool if BMD not assessed?
- What is the T-score based on?
- What is the importance of Z-score?
- How do you interpret a T-score?
- What is the management of Osteoporosis?
- What are some side-effects associated with Bisphosphonates?
- How should Bisphosphonates be taken?
A
- Osteoporosis is reduced bone density, Osteopenia is a less severe form
- Risk factors include being elderly, low BMI, being female, post-menopausal, smoking, alcohol, low activity / mobility, being Caucasian or Asian, endocrine issues such as Hyperthyroidism, GH deficiency, DM
- Medications include Glucocorticoids, SSRIs, PPIs, anti-epileptics, anti-oestrogens
- Any female over 65, any male over 75, any other person who has had a fragility fracture, is currently or frequently uses glucocorticoids, has a history of falls, family history of osteoporosis, low BMI, smoker, drinks a lot of alcohol
- FBC, U&E, LFTs, TFTs, CRP, Bone Profile
- FRAX tool indicates your 10-year risk of a fragility fracture
- If BMD is assessed, FRAX gives one of 3 options 1) Reassure, 2) Consider treatment 3) Strongly consider
- If BMD is not assessed, FRAX gives one of 3 options 1) Low risk, reassure 2) Intermediate, offer BMD, 3) High, offer bone protection
- T-Score is based on bone health of a young person
- Z-Score is adjusted for age, gender, ethnicity
- If between 0 and -1, normal. If between -1 and -2.5, osteopenia, if below -2.5, osteoporosis. If below -2.5 and fracture, severe osteoporosis
- Offer all patients Calcium and Vitamin D. Also consider Bisphosphonates i.e. Alendronic acid. If cannot tolerate, consider Risendronate or Etidonate. If cannot tolerate, consider Ranelate, Raloxifene
- Gastric erosions, reflex, osteonecrosis of jaw, osteonecrosis of auditory canal
- On empty stomach, keep upright for 30mins
3
Q
OSTEOMALACIA
- What is Osteomalacia? What is rickets?
- How is Vitamin D synthesized?
- What conditions may cause Vit D deficiency?
- What is the function of Vit D with respect to bone?
- Low Ca2+ has what effect on parathyroid?
- What are reference ranges for Vitamin D?
- What other investigations might you order, what may be seen?
- How do you manage Osteomalacia?
A
- Refers to bone softening due defective bone mineralisation. Rickets is the form in children before closure of growth plates
- Vitamin D is synthesized in the skin from cholesterol with the help of UV radiation
- Malabsorption diseases i.e. IBD, CKD whereby the kidneys fail to active Vitamin D to absorb Ca2+ and PO43-
- Vitamin D helps absorb Calcium and Phosphate from intestines and kidneys into blood, to facilitate bone mineralisation.
- Hypocalcemia will cause Type 2 hyperparathyroidism, stimulating osteoclast activity to increase serum calcium levels
- Below 25 = Vit D deficiency, 25-50 = Vit D insufficiency, above 75 = Optical
- Ca2+ (low), PO43- (low), PTH (high), ALP (high), XR (osteopenia), DEXA (low BMD)
- Vit D supplementation
4
Q
GOUT
- What is gout?
- How is an acute episode of gout treated?
- What is the prophylaxis for gout? 1st and 2nd line
- When is gout prophylaxis offered?
- What are some lifestyle modifications to reduce gout?
- What joint is most commonly affected?
- What other joints are affected?
- What crystals are seen in gout on joint aspiration?
- What radiological features are associated with gout?
- What drug(s) may exacerbate gout?
A
- An inflammatory arthritis, where patients have discrete episodes lasting several days followed by being symptom free
- Colchicine and NSAIDs
- Allopurinol, 1st line, Febuxostat, 2nd line
- Offered after the first flare has settled. During subsequent flares can continue taking them
- Reduce alcohol intake, reduce purine rich foods, weight loss if obese
- MTP of foot
- Ankle, feet, hand joints, wrist, elbow, knee
- Negatively birefringent needle shaped crystals
- Punched out erosions with overhanging edges, preservation of joint space, eccentric erosions. No osteopenia
- Thiazides, ARBs i.e. Losartan
5
Q
PSEUDOGOUT
- What is Pseudogout? What crystals?
- On joint aspiration, what is seen?
- On XR, what is seen?
- What are risk factors?
- What is the management?
A
- A crystal arthropathy caused by deposition of calcium pyrophosphate
- Positively birefringent rhomboid shaped crystals
- Chondrocalcinosis
- Haemochromatosis, Acromegaly, Wilson’s Disease, low Mg, low Phosphate, hYPERparathyroidism
- NSAIDs, Steroids
6
Q
REACTIVE ARTHRITIS
- What is it?
- When does it occur?
- What is it commonly caused by?
- What is an important differential diagnosis?
- What are the features?
- What is the management?
- What is the prognosis?
A
- A synovitis in the joint as a reaction to a recent infective trigger
- Usually within 4 weeks of infection
- Gastroenteritis, STIs i.e. Chlamydia
- Septic Arthritis
- Bilateral conjunctivitis, Urethritis, Arthritis, Anterior Uveitis, Circinate balinitis, Keratoderma blenorrhagica
- NSAIDs, Steroids
- Better by 6 months
7
Q
PAGET’S DISEASE
- What is it?
- Which bones are commonly affected?
- What are the symptoms?
- What is the specific blood test result?
- What are XR findings?
- What is the management?
- What are the complications?
A
- A disease characterised by disordered bone turnover, both increased osteoclast and osteoblast activity
- Long bones, the skull, spine and pelvis
- Bone pain, fractures, hearing loss
- Solitary rise in ALP
- Sclerosis and lysis, skull thickening, cotton wool skull, V shaped defects on long bones
- Bisphosphonates
- Osteosarcoma, spinal stenosis
8
Q
ANTIPHOSPHOLIPID SYNDROME
- What is it?
- What is it associated with?
- What are some features?
- How is it diagnosed? Blood test results?
- How is it managed in patients who are pregnant?
- How is it managed as primary prophylaxis?
- How is it managed as secondary prophylaxis?
A
- An acquired disorder associated with antiphospholipid antibodies where blood is prone to clotting
- Associated with SLE and Libman Sachs Endocarditis
- Venous and arterial thromboembolism, livedo reticularis, thrombocytopenia, recurrent miscarriages
- Diagnosed with clinical features alongside prolonged APTT and positive cardiolipin antibodies or lupus anticoagulant
- Aspirin + LMWH
- Low dose aspirin
- Lifelong warfarin, INR 2-3, or 3-4 if recurrent
9
Q
PSORIATIC ARTHRITIS
- What is it?
- When does it develop?
- What is the severe form of this condition called?
- What are the features seen in hands?
- What is seen on XRay?
- How is it managed?
A
- An inflammatory arthritis associated with psoriasis
- Usually within 10 years of Psoriasis diagnosis
- Arthritis Mutilans
- Psoriatic skin plaques, nail pitting, onychylosis, dactylitis, enthesitis
- Pencil in cup appearance
- Similar to Rheumatoid Arthritis, so NSAIDs, DMARDs, Anti-TNF medications
10
Q
POLYMYALGIA RHEUMATICA
- What is it?
- What is it strongly associated with?
- What patients are commonly affected?
- Do patients get weakness?
- What do blood tests show?
- What is the management?
- What is the DON’T STOP mnemonic for steroids?
A
- An inflammatory condition which causes pain and stiffness, in neck, shoulders, pelvic girdle
- Strongly associated with Giant Cell Arteritis
- Women, older age >50, caucasion
- NO WEAKNESS
- Raised ESR, CRP, Plasma viscosity
- 15mg Prednisolone a day, re-assess after 1 week if no improvement reconsider diagnosis. Re-assess again after 3-4 weeks
- Educate patients not to discontinue due to risk of adrenal crisis. Sick day rules: increase dose if unwell. Treatment card: Carry one around. Osteoporosis prevention i.e. Bisphosphonates, Vitamin D and calcium supplementation. PPI for protection against steroids causing ulcers
11
Q
ANKYLOSING SPONDYLITIS
- What is it?
- What patients are commonly affected?
- What may be seen on XRay?
- What may be seen on blood tests?
- What may be seen on examination?
- What are the associated features?
- What is the management?
A
- An inflammatory condition affecting the spine, causing stiffness and pain
- Young males (3:1), 20-30 years old
- Bamboo spine, squaring of vertebrae, sacroiliitis. On CXR: apical fibrosis
- Raised CRP, ESR
- Schober’s test <5 cm
- Apical fibrosis, anterior uveitis, aortic regurgitation, AV heart block, amyloidosis, achilles tendonitis, arthritis (peripheral), and cauda equina
- Regular exercise, NSAIDs, physio, DMARDs, Anti-TNF
12
Q
RHEUMATOID ARTHRITIS
- What is it?
- What genes are associated with it?
- What antibodies are associated with it?
- What joints are affected? Which aren’t?
- What are the symptoms?
- What is Palindromic Rheumatism?
- What is Atlantoaxial Subluxation?
- What tests must be ordered for patients with Atlantoaxial Subluxation?
- What signs may be visible in hands?
- What are some extra-articular manifestations?
- What may be seen on XR?
- How can Rheumatoid Arthritis be monitored?
- What is 1st, 2nd, 3rd, 4th line management?
- What is used to induce remission of a flare?
- Side effects of MTX?
- Side effects of SSZ?
- Side effects of Levoflunamide?
- Side effects of Hydroxychloroquine?
- Side effects of Biologics? What must be ordered?
- What is Felty’s Syndrome?
- What are some complications of Rheumatoid Arthritis?
- What drugs for Rheumatoid Arthritis are safe in pregnancy?
- What are some poor prognostic factors of Rheumatoid Arthritis?
A
- Rheumatoid Arthritis is an autoimmune, inflammatory, symmetrical, distal polyarthropathy
- HLA-DR1 and HLA-DR4
- Rheumatoid Factor, Anti-CCP
- MTP, PIP joints. Ankle, wrist, cervical spine. DIP is rarely affected
- Pain, stiffness, swelling, muscle aches, fatigue, weakness, weight loss
- Symptoms which only last for 1-2 days
- A feature in some patients with Rheumatoid Arthritis, affecting the cervical spine. C2 and odontoid peg shift, causing spinal cord compression which is important if having anaesthetic
- AP and lateral radiographs
- MCP/PIP joints affected. May have Swan Neck or Boutonniere deformity. Z-shaped deformity and Ulnar deviation
- Pulmonary fibrosis, Felty’s syndrome, Bronchiolitis Obliterans, Secondary Sjorgen’s syndrome
- Joint destruction, soft tissue swelling, bony erosions, periarticular osteopenia
- CRP and DAS28
- 1st line (Any DMARD i.e. MTX, SSZ, Levoflunamide, Hydroxychloroquinine). 2nd line (Any two of these in combination). 3rd line (MTX plus a Biologic). 4th line (MTX plus Retuximab)
- Oral / IM Prednisolone
- Pneumonitis, Pulmonary fibrosis
- Reduced Sperm count
- HTN, Peripheral neuropathy
- Nightmares, retinopathy, corneal deposits
- Reactivation of TB, hence must request CXR
- RA + splenomegaly + neutropenia
- Respiratory (Pulmonary fibrosis, bronchiolitis obliterans, MTX pneumonitis), Ocular (Episcleritis, scleritis), Osteoporosis, IHD, Felty’s
- SSZ and Hydroxychloroquine
- RF, anti-CCP, HLA DR4 positive, male, younger onset, poor symptoms on initial presentation
13
Q
SYSTEMIC LUPUS ERYTHEMATOSUS
- What is it?
- What are the features?
- What are some investigations?
- What is useful to monitor the disease?
- What are some complications of SLE?
- What is the management?
A
- An inflammatory, autoimmune connective tissue disorder
- Hair loss, photosensitive malar butterfly rash, lymphadenopathy, shortness of breath, splenomegaly, arthralgia, myalgia, Reynaud’s phenomenon
- FBC (anaemia of chronic disease), C3 & C4 complement (low during active disease), CRP & ESR (high during active disease), Urinalysis + renal biopsy (Lupus nephritis), ANA (rule out test, high sensitivity), anti-dsDNA (high sensitivity)
- C3 & C4, will be low during active disease
- CVD (leading cause of death), infection from immunosupression, anaemia of chronic disease, pericarditis, lupus nephritis, recurrent miscarriage / VTE (link with antiphospholipid syndrome)
- NSAIDs, Steroids, Hydroxychloroquine (for mild disease), MTX (for more severe)
14
Q
- What are the skin disorders associated with SLE?
- What can DLE progress into?
- Which patients is DLE more common in?
A
- Photosensitive, malar butterfly rash, alopecia, livedo reticularis and discoid lupus erythematosus
- Squamous cell carcinoma
- Young, african women
15
Q
What drugs may cause Lupus?
What investigation will confirm this?
A
Isoniazid
Procainamide
Phenytoin
Hydralazine
PRESENCE OF ANTI-HISTONE ANTIBODIES