MRCP Flashcards
What are the features of a somatastatinoma?
- Cholelithiasis
- Diabetes
- Chronic diarrhoea
- Weight loss
- Steatorrhoea
Ciclosporin facts
- Inhibits IL2
- Side effects: Gum hyperplasia and hypertrichosis, Hyperuricaemia, fluid retention
- Metabolised by CYP3A4 - interacts with macrolides and statins
Klinefelter syndrome
- XXY
- Hypogonadism, elevated urinary gonadotrophin levels
- Need testosterone replacement therapu
Chagas disease
- Trypanosoma Cruzi
- Fever, myalgia, hepatosplenomegaly, myocarditis
- Unilateral periorbital oedema (Romana’s sign)
Anti malarial treatment
- Uncomplicated falciparum; Atovaquone proguanil,Artemisin combination
- Vivax - Choloroquine with primaquine (but high rates of chloroquine resistance in Asia)
Rickettsia
- Rocky mountain spotted fever: Headache and fever, rash starts at peripheries and moves to the centre, spread by ticks
- Q fever (Coxiella burnetti); pneumonia
- Treated with tetracyclines (chloramphenicol in pregnancy)
Acute GVHD
- Within 100 days of transplant
- Rash starts on palms and soles of feet
- Associated with diarrhoea
HOCM
- Beta myosin heavy chains
- Autosomal dominant
- Disorganised fashion myocytes and myofibrillar hypertrophy
- Jerky pulse, large a waves
- ESM
- Poor prognostic features: young age at onset, family history of sudden cardiac death and syncopal sx. No correllation with LVOT gradient
WPW
- ECG: short pR interval, delta waves
- LAD if right accessory pathway and vice versa
- Rx: radiofrequency ablation of accessory pathway, can use sotalol (not if in AF), amiodarone, felcainide,
Lateral medullary syndrome (wallenbergs)
- PICA
- Ataxia and nystagmus
- Ipsilateral: dysphagia, facial nerve palsy, Horners
- Contralateral: limb sensory loss
P450 INDUCERS
- St Johns wort
- Carbamazepine
- Rifampicin
- Alcohol
- Phenobarbitol
- GRiseofulvin
- Phenytoin
- SUlphonyl ureas
P450 INHIBITORS
- Sodium valproate
- Isoniazid
- Cimetidine
- Ketoconazole
- Fluconazole
- Allopurinol
- Ciprofloxacin
- Erythomycin (macrolides)
- SSRI
- Chloramphenicol
- Omeprazole
- Metronidazole
- Grapefruit juice
Stomach hormones
- Gastrin: Produced by G cells in antrum, stimulates parietal cells to release acid and mature, increases gastric motility
- CCK:I cells small intestine, increases release of pancreatic enzymes, decreases gastric emptying
- Secretin: S cells small intestine, increases release f bicarb rich fluid from hepatic and pancreatic duct c ells
- SOmatostatin: D cells in pancreas and stomach,decreases acid and pepsin secretion, decreases gastrin and pancreatic enzyme secretion, decreases insulin and glucagon secretion
Lupus nephritis
1 - Minimal change 2 - Mesangial 3 - Focal segmental proliferative 4 - Diffuse proliferative 5 - Membranous 6 - Glomerusclerosis
- class 3, 4 and 5 treated with high dose steroid and either cyclophosphamide or mycophenolate mofetil
- Class 6 too advanced
- All treated with hydroxychloroquine
Waldenstroms macroglobinaemia
- lymphoplasmacytoid malignancy, secretion of IgM paraprotein
- Weight loss and lethargy
- HYperviscosity syndrome
- Lymphadenopathy
Upper zone lung fibrosis
- Coal miners lung
- Histocytosis
- Ank spond
- Radiation
- Tb
- Silicosis/sarcoidosis
Lower Zone fibrosis
- Most connective tissue
- Asbestosis
- ILD
- Drug induced
Adrenoreceptors
- Alpha 1:GI smooth muscle relaxation, vasoconstriction, hepatic glycogenolysis, salivary secretion
- Alpha 2: inhibits insulin, platelet aggregation
- Beta 1: heart contractility
- Beta 2 : Bronchial smooth muscle relaxation, vasodilation, GI smooth muscle relaxation
- Beta 3: lipolysis
- G protien coupled, Beta stimulate adenylate cyclase, a2 inhibits*
Overdose
- Paracetamol: Charcoal if less than 1 hour, NAC
- Salicylate; urinary alkalisation with sodium bicarb, haemodialysis level more than 700
- TCA: sodium bicarb
- Lithium: mild to mod fluids, severe haemodialysis, can give sodium bicarb
- Lead: Dimercaprol, calcium edate
- Cyanide: hydroxocoalbumin
Hypokalaemia +- Hypertension
- Conns: hypokalaemia + hypertension
- Liddle: hypokalaemia + hypertension, DCT issues causing reabsorption of sodium, autosomal dominant
- Gitelman: NCl transporter in DCT
- Bartters: NKCl transporter, autosomal recessive, ascending loop of henle
Renal Tubular Acidosis
RTA 1: inability to generate acid urine, hypocalaemia, renal stones, associated with SLE, RA, sjogrens
RTA 2: decreased bicarb reabsorption, hypokalaemia, fanconi and wilsons, osteomalacia
RTA 3: rare, carbonic anhydrase ii deficiency
RTA 4: reduction in aldosterone leads to reduction in proximal tubular ammonia excretion, hyperkalaemia, DM and hypoaldosteronism
Renal transplant
- Class 1 antigens ABC
- CLass 2 antigens D
- DR>B>A>C
- non hodgkins and skin cancer more common after transplantation due to immunosuppression
- CMV prophylaxis with valganciclovir
- CMV treatment with IV ganciclovir
- Tac inhibits T cell phosphatase
- SIrolimus inhibits T cell division
Minimal change disease
- Nephrotic syndrome
- More common in children
- Steroid responsive
Membranous glomerulonephritis
- Most common in adults with 2 peaks in 20s and 60s
- Nephrotic syndrome, proteinuria or CKD
- antiphospholipase A2 receptor
- IgG and complement deposition on gbm, spikes on silver stain
- Initial rx is with ACEI and ARB, may need immunosuppression
- Renal vein thrombosis in 5%
FSGS
- Focal glomerular deposits of IgM seen
- Nephrotic syndrome
- Primary treated with steroids
- Secondary (due to HIV or heroin use) treated with immunosuppression
- 25% develop ESKD
- High level of recurrence in transplant patients