Green book 1 flashcards
In iodine sufficient areas, is hyper or hypothyroidism from amiodarone therapy more common
Hypothyroidism
What are the types of amiodarone induced thyrotoxicosis
Type 1: abnormal gland w pre existing pathology (e.g. multinodular goiter or latent Graves’) increased synthesis of T3/4
Type 2: a destructive thyroiditis that results in excess release of T3/4. Due to direct toxic effect of amiodarone on thyroid follicular epithelial cells.
Manifestations of amiodarone induced thyrotoxicosis
Atrial arrythmias
Exacerbation of IHD/HF
Unexplained weight loss, restlessness, or low grade fever
How to distinguish between Type 1 and 2 amiodarone induced thyrotoxicosis
Doppler US - type I increased vascularity, II decreased
Type I have goiters
Treatment of type 1 amiodarone induced thyrotoxicosis
- Complex decision making re stopping amiodarone - how essential is amiodarone, long half life (100 days),
- Thionamides
- Radioiodine (but increased uptake)
- Surgery - thyroidectomy
Treatment of type 2 amiodarone induced thyrotoxicosis
Steroids
Nephrotic syndrome + RA - what systemic disease
Amyloidosis
Nephrotic syndrome and myeloma - what systemic disease
Amyloidosis
How to diagnosis amyloidosis
Biopsy - fat pad or rectal or involved site
Light chain amyloidosis - pathophysiology and organs involved
Primary amyloidosis from plasma cell dyscrasia w monoclonal immunoglobulin
Associated with MM or waldenstrom’s or non Hodgkin’s lymphoma
Organs involved: Mucocutaneous - petechia/ecchymosis, raccoon eyes, allopecia, papules/nodules Tongue - macroglossia Heart - ischaemic, arrhythmia, orthostatic hypotension, Other vascular: claudication Renal- proteinuria, nephrotic syndrome GI - haemorrhage/malabsorption Hepatomegaly Neuropathies - autonomic/sensory
Serum amyloid A protein amyloidosis - pathophysiology and manifestations
Secondary amyloidosis to inflammatory/infective chronic conditions
Organs involved:
- Kidney - 90% of patients
- Liver and spleen (howell jolly bodies)
- GI (rare)
- Cardiac - AA deposites (less than AL amyloidosis)
What titre of ANA is more suggestive of autoimmune disorder
> 1:640
What ANA pattern is linked to limited scleroderma
Anti-centromere
What antibodies are found in primary Sjogren’s
Ro/La
What ENAs are SLE specific
dsDNA, anti Sm
What ENA is found in mixed CTD
U1RNP
What ENA is found in diffuse systemic sclerosis
SCL-70
What ENA is found in anti-synthetase syndrome
Jo-1
What ENA is associated with congenital heart block
anti Ro (SSA)
What at the antiphospholipid antibodies
Lupus anticoagulant
Anticardiolipin antibodies
Beta2-glycoprotein-1 antibodies
Most common venous thrombus site in antiphospholipid syndrome
Calf
Most common arterial thromboses site in antiphospholipid syndrome
Cerebral vessels
Diagnostic criteria for antiphospholipid syndrome
+ve antiphospholipid antibody (need repeat measurement 12 weeks apart)
AND
At least 1 clinical feature (venous/arterial thromboses, recurrent foetal loss, thrombocytopenia)
Primary thrombosis prevention in patients who have antiphospholipid antibodies
Not indicated if they have not had a thrombotic event or if they have only had a pregnancy morbidity
Aspirin may have a role in cardiovascular risk reduction
CHADS2 risk criteria score
Prior stroke Age >65 score 1 >75 score 2 HTN DM HF EF <40% Valvular heart disease Female sex Vascular disease
Consensus practice guidelines for warfarin bridging in surgery
No bridging for CHADS2 <4
Can bridge for CHADS2 5/6 or high bleeding risk procedures
How to bridge warfarin if required
stop warfarin 5 days before procedure and bridge w LMWH 3 days before and restart LMWH 24 hours after procedure and up to 10 days while warfarin reintroduced
Aims of rate control in AF
60-80 bpm at rest and 90 to 115 beats per minute during moderate exercise
How long to anticoagulate for before and after cardioversion
3 weeks before and 4 weeks after
What agents can be used in maintenance of sinus after DC cardioversion?
Amiodarone
Sotalol
Flecanide (<60yr and no structural heart disease)
Ends of DMARDs:
- cept
- mab
- ximab
- zumab
- tinib
cept - fusion mab - mAb ximab - chimeric mAb zumab - humanized mAb tinib - tyrosine kinase inhibitor
Secukinumab mechanism of action
IL 17
Ustekinumab mechanism of action
IL 12/23
Requirement for PBS biologic for RA
Methotrexate 20mg weekly for 6 months and additional DMARD for 3 months
Raised inflammatory markers
20 tender swollen joints or 4 major joints
Requirements for PBS biologic for ank spond
Reduced ROM
Raised inflammatory markers
High BASDAI (visual analogue score of pain and stiffness)
Significant sacroiliitis proven on Xray
Failed 2 consecutive NSAIDs over 3 months with a concurrent exercise program
Raised inflammatory markers (ESR 25, CRP 10)
What biologic DMARD exacerbates severe heart failure
TNF inhibitors
Perioperative management for biologics for surgical procedures
Withhold treatment with etanercept for 2-4 weeks and adalimumab, certolizumab, golimumab and infliximab 4-8 weeks prior to major surgery. Treat may be started post operatively once wound healing is satisfactory and there is no evidence of infection/wound healing
Aetiologies of HFrEF
Ischaemic heart disease (2/3rds of cases)
HTN
Dilated cardiomyopathy
HFpEF aetiologies
HTN Female Elderly IHD Hypertrophic cardiomyopathy Aortic stenosis
Precipitants of acute exacerbation of HF
Ischaemia Non adherence Arrythmia AKI SYstemic infections Anaemia Hyperthyroidism NSAIDs PE
Aims of treatment for HFrEF
Manage fluid
Reduced hospital admissions/HF exacerbations
Reduced morbidity
Reduce mortality
Primary prevention indication for implantable cardioverter-defibrillator (ICD)
1 month post myocardial infarction and LVEF <30%
HFrEF and ischaemic or dilated cardiomyopathy LVEF <35%
How to present kidney staging/classification
Stage x kidney w norm/mic/macalbuminuria secondary to diabetic nephropathy
What are CKD blood pressure targets
<140/90
w diabetes/albuminuria 130/80
Mx of albuminuria
ACEi/ARB
Reduction in salt intake
Spironolactone
Glycaemic control (BGL 6-8 post prandial, HbA1C <7%)
Relationship of CKD and dyslipidaeia
CKD associated with abnormalities of lipid metabolism
More severe in albuminuria - especially nephrotic syndrome
Statin for anyone >50 years w CKD or <50 years w other risk factors
When to use calcitriol
suppression of secondary hyperparathyroidism - PTH >3-5 upper limit of normal
When is cinacalcet used
Hyperparathyroidism in patients on dialysis
When does anaemia develop in CKD
eGFR <60
When does acidosis develop in CKD
eGFR <30
why is acidosis in CKD bad
demineralisation ofbone and increased protein degradation
Bicarb aims in CKD
> 22
Adverse effects of sodibic
fluid retention, worse BP control
Modifiable causes of depression in CKD
Insomnia
Medication SE
Inadequate dialysis
Salt restriction CKD
6g/day
Treatment approach to chronic pain syndrome
Rehab
Physical therapy
Occupational therapy - including desensitisation techniques
Recreation therapy
Medical rapport, realistic treatment goals, psychological evaluation, involvement of family members/carers
Analgesia in chronic pain syndrome
Simple analgesia
Avoid opioids
Amitriptyline/pregabalin/gabapentin
SSRI or duloxetine
Organs that cystic fibrosis affect
Lungs Sinuses Pancreas Reproductive system Liver Intestine - meconium ileus
CF complications in the respiratory system
Bronchiectasis Recurrent infections Sinusitis Pulmonary haemorrhage Pulmonary HTN Spontaneous pneumothorax
Pancreatic complications of Cystic Fibrosis
exocrine - malabsorption
endocrine - diabetes
What diagnoses CF
Sweat chloride value greater than 60 mEq/L
Names of CFTR modulators
Ivacaftor
Lumancaftor/Ivacaftor
Tezacaftor/lumacaftor
Indication for transplant in cystic fibrosis
FEV1 <30%
Severe hypoxaemia or hypercapnia after recovery from an acute illness
Increasing functional impairment
Life threatening pulmonary complication - recurrent massive haemoptysis
What is the major risk factor for microvascular disease in diabetes
hyperglycaemia
What type of diabetes is associated with microvascular and macrovascular
T1DM - microvascular
T2DM - macrovascular
Most important RF for diabetic retinopathy
hyperglycaemia and hypertension
How to treat diabetic retinopathy
Laser photocoagulation
What DOAC is sensitive to coagulation tests
Dabigatran to APTT/TT/TCT
Dose reduction for dabigatran
Age >75 or CrCl 30-50mL 110mg bd (normally 150mg bd)
What is granulomatosis with polyangiitis?
Systemic vasculitis of the medium and small arteries, as well as the venules, arterioles and occasionally large arteries
What to classify granulomatosis with polyangiitis?
Classic GPA
- Upper and lower respiratory tract + kidneys
Limited GPA
- Upper respiratory tract with majority progressing to GN
- less likely to be ANCA positive
Organ involvement in granulomatosis with polyangiitis
Lungs
- nodules
- alveolar/pleural opacities
- haemorrhage
Kidneys
- renal impairment
- GN
Upper and lower airways
Joints
Eyes
- conjunctivitis, corneal ulceration, episcleritis, optic neuropathy, nasolacrimal duct obstruction
Skin
Nervous system
- CNS, eye, Cranial nerves, mononeuritis multiplex
Granulomatosis with polyangiitis diagnostic criteria
2 or more of:
- Nasal/oral inflammation
- Radiographic chest changes (nodules/infiltrates/cavities)
- Abnormal urinary sediment
- Granulomatous inflammation on biopsy of an artery or perivascular area
How proportion of people with granulomatosis with polyangiitis are ANCA positive
~90%
Treatment of GPA
Induction
- Cyclophosphomide, steroids, rituximab
Maintenance of remission
- methotrexate, azathioprine
Plasma exchange
Indications for plasma exchange in granulomatosis with polyangiitis
anti-GBM antibodies as well as ANCA
severe pulmonary haemorrhage on presentation
advanced renal dysfunction
haemachromatosis mutation gene
HFE gene
Haemachromatosis inheritance
autosomal recessive
Most common manifestations of haemachromatosis
Liver function abnormalities Systemic - weakness/lethargy Skin hyperpigmentation Diabetes Arthralgia Impotence ECG abnormalities
What manifestations of haemachromatosis doesn’t respond to Fe removal?
Arthritis
Diabetes (partial)
Diagnosis of haemachromatosis
Organ involvement
Ferritin >1000, transferritin >50%
C282y mutation
Preventative measures in haemachromatosis
Avoid ETOH
Monitor for HCC