Rheumatology Flashcards
What need to take alongside methotrexate
Folic acid- taken weekly at least 24 hours after methotrexate dose
What drugs avoid if on methotrexate
Trimethoprin and co-trimoxazole as increases risk of BM aplasia
Aspirin as increases risk of toxicity
Treatment of methotrxate toxicity
Folinic acid
Side effects of methotrexate
Myelosuppression
Liver fibrosis
Pulmonary fibrosis
Pneumonitis
Mucositis
Antibody for limited cutaneous systemic sclerosis
Anti-centromere
Antibody for diffuse cutaneous systemic sclerosis
Anti-scl-70
Rfx for pseudogout
Haemochromatosis
Hyperparathyroidism
Acromegaly
Wilsons
What are pseudogout crystals made of
Calcium pyrophosphate
Management of pseudogout
Do aspiration of fluid to exclude septic arthritis
NSAIDS
If severe can do intra-articular or oral steroids
Joint aspiration of pseudogout
Positive birefringence rhomboid shaped crystals
Reactive arthritis presentation
4 weeks post STI
Asymmetrical oligoarthritis of lower limbs
Urethritis
Conjunctivitis or anterior uveitis
Skin changes- circinate balanitis, keratoderma blenorrhagica
Skin changes in reactive arthritis
circinate balanitis
keratoderma blenorrhagica
Lateral epicondylitis presentation
Pain and tenderness over lateral epicondyle
Pain worse on extension of wrist against resistance with elbow extended or supination or wrist
When may not need a DEXA scan to diagnose osteoporosis
Someone aged over 75 with a fragility fracture
First line for osteoporosis
Alendronate and calcium/vitamin D supplements if intake not satisfactory
Management options for osteoporosis
All patients will receive a bisphosphonate and calcium/vitaminD replacement if intake not satisfactory. Women can start HRT if want
Second line options include other bisphosphonates- risedronate or etidronate
Third line options- strontium or raloxifene
4th line denosumab
If do not tolerate alendronate then what are second line bisphonates available
risedronate or etidronate
Have to have a lower T score to warrant (much stricter)
Third line options for osteoporosis
Raloxifene
Strontium ranelate
MOA of raloxifene
Selective oestrogen receptor modulator
Risks of raloxifene
Increased VTE risk
How is denosumab given
Subcut injection every 6 months
Which bones does pagets affect
Skull
Spine
Pelvis
Long bones
What causes a V shaped osteolytic lesion
Pagets
Typical presentation of pagets
Bone pain
Pathological fracture
Bossing of skull
Deafness
Complications of pagets
Deafness
Sarcoma
Fractures
High output heart failure
Management of pagets
Bisphosphonate
MOA of bisphosphonates
Inhibit osteoclasts
Side effects of bisphosphonates
Osteonecrosis of jaw
Oesophagitis if do not drink enough water
Acute phase reaction
What must do before giving bisphosphonate
Correct vitamin D or calcium deficiency
When is only time give calcium in osteoporosis
If not enough dietary intake
What should all patients with osteoarthritis do
Local muscle strengthening and weight loss
2nd line for osteoarthritis
Oral NSAID and PPI
What can be used if analgesia unsuccessful for OA
Intrarticular steroids injections
What is it after starting bisphosphonate develop fever, myalgia and N&V
Acute phase reaction- normal
What is main precipitating factor for polyarteritis nodosa
Hep B
PAN presentation
Fever
Weight loss
Renal failure signs
Livedo reticularis
Rfx for osteoporosis
CKD
Endocrine disorders- most
Cancer
Malabsorption
Non antibody blood findings of SLE
ESR up
CRP can be normal
Low complement levels in active disease
What gel and coombs is contact dermatitis
IV
Management of PMR
Prednisolone
What is response of PMR to prednisolone
Very good- if no response then consider other diagnoses
Presentation of PMR
Older demographic
Rapid onset within 1 month
Aching and morning stiffness in proximal limb muscles
(weakness not a sx)
Can also get depression, fatigue, low grae fever
Investigation results for PMR
ESR and inflam markers up
CK normal
EMG normal
What needs to be monitored when on hydroxychloroquine
Visual acuity as it causes retinopathy (bulls eye)
RA X ray findings
Periarticular erosions
Lossof joint space
Subluxation
Juxta articular osteoporosis
What must do if likely to take steroid over 3 months
Take a bisphsophonate
Main side effect of colchicine
Diarrhoea
Stills disease presentation
Cyclical fever worse in evening
Salmon pink rash
Lymphadenopathy
What is classical blood finding in stills disease
Raised ferritin
Which DMARDS can take in pregnancy
Hydroxychloroquine
Azathioprine
Sulfasalazine
What is bamboo sign seen in
Ank spond
Best rule out test for SLE
ANA
Management of discoid SLE
Topical steroid cream
2nd line- hydroxychloroquine
Management of reactive arthritis
Start NSAID and rheum referral
What must do in all cases of dermatomyositis or polymyositis
Do a malignancy screen
What is rash that spares nasolabial folds
Malar rash
What is seen on early x ray of ank spond
Evidence of sacroiliitis- subchondral erosions and sclerosis
Squaring of vertebrae
First line for ank spond
NSAID and regular- exercise like swimming
Physio also recommended
Presentation of psoriatic arthritis
Most common- symmetric polyarthritis similar to RA
Asymmetrical oligoarthritis affecting hands and feet
Sacroiliitis
DIP joint disease
Arthritis mutilans
What should be given to patients with persistent very severe ank spond
Anti-TNF such as adalimumab and etanercept
What is pencil and cup deformity seen on x ray in
Psoriatic arthritis- describes periarticular erosions
How do schobers test
Identify L5
Mark 10 cm above and below this point
Ask to bend forward and touch toes with straight knees
Remeasure distance between points and if doesnt increase by 5 then indicative of reduced lumbar flexion
What demotes a positive schobers
Less than 5cm
Extra articular features of psoriatic arthritis
Skin lesions
Enthesitis
Dactylitis
Nail changes
What is management of psoriatic arthritis
Managed by rheumatologist
If mild -NSAID
More moderate/severe then methotrexate
Can consider ustekinumab (IL-12 and IL-23) or secukinumab (IL-17)
What is the underlying pathophysiology in GCA retinopathy
Anterior ischaemic optic neuropathy
How does aspirate appear in RA
Yellow and cloudy
What is main Ig in breast milk
IgA
Most common causes of drug induced lupus
Procainamide
Hydralazine
Isoniazid
Phenytoin
How manage drug induced lupus
Stopping the drug normally eradicates sx
What is cause if develop tingling, muscle aches and N&V after starting a bisphosphonate
Underling vitamin D or calcium defic which has been exacerbated by taking bisphosphonate
What is the Z score from DEXA scan adjusted for
Age
Gender
Ethnicity
How differentiate pseudogout from gout on X ray
Chondrocalcinosis in pseudo
Also can see same changes as in OA
Most common site of septic arthritis in adults
Knee
How monitor RA treatment
CRP
Disease activity score- DAS28
What is first line for RA
DMARD and short course of bridging prednisolone due to DMARD taking time to taking effect
First line DMARD options for RA
Methotrexate
Sulfasazine
Leflunonamide
How manage a RA flare
IM methylprednisolone
OR
Oral corticosteroids
When can start biologics in RA
Failed response to 2 DMARDS
What biologics recommended currently for RA
TNF inhibitors
- etanercept
- infliximab
- adalimumab
How does methotrexate pneumonitis present
Fever
SOB
Cough
What HS type is SLE
III
Most common SE of bisphosphonates
Dyspepsia from oesophageal ulcers and oesophagitis
Skin features of dermatomyositis
Photosensitive rash
Heliotrope rash in periorbital area
Gottrons papules on extensor surface of hands
MOA of sulfasalazine
5-ASA
Side effects of sulfasalazine
Oligospermia
SJS
Pneumonitis
Management of raynauds
Refer to rheumatology
First line: CCB nifedipine
What can do if no response to nifedipine in raynauds
IV prostacyclin which can last weeks/months
What does T score of -2.5 mean
Bone density of 2.5 standard deviations below that of average healthy young adult
Management principles of SLE
NSAIDs
Sunblock
Management of SLE if internal organ involvement
Prednisolone
Cyclophosphamide
Gout X ray findings
Tophi
Joint effusion
Punched out erosions