Endocrine and Nephrology Flashcards
aldosterone job
fluid and salt retention
K excretion
inhibited by spironalactone/ amiloride
deficient in addisons
- hypotention, low Na, high K
too much in conns
- htn, hypo K, alkalosis
secondary htn
RENAL 80%
gn, pyelo, cystic, stenosis
ENDOCRINE cush (cortisol), conn (aldosterone), congen adren hyp, phaeo, acromeg hyperparathyroid PREGNANCY
VASCULAR
- coarctation
- renal artery stenosis
alcohol
rare: MAO-i (depression) with cheese
ADH job
fluid retention
cushing syndorme vs disease
sydrome
- HTN,
- hirsuit, acne, thin hair
- ihd, infection
- central obesity, striae, thin/bruised skin
- osteoporosis, proximal myopathy
- impotence/dysmenorrh
= can be
1) iatrogenic
2) adrenal tumour/hyperplasia
3) ectopic acth producing tumour
4) pituitary tumour
disease = pituitary tumour
- produce acth -> casue adrenal hyperplasia
cushings test
48 hr low dose DEXOMETHASONE test
24hr urinary cortisol
also renin increased
ACTH helps diagnosis
- inc in ectopic/pituitary tumour
- dec in adrenal tumour/hyperplasia
do CT
cushings treatment
pre-surgery
- metyrapone
- ketoconazole
surgery
conns
primary hyperaldosteronism
- ademona or hyperplasia on adrenal
HTN HYPOKAL ALKALOSIS
weakness, polyuria/dipsia
low renin
high aldosterone
CT scan
T
(spironalactone/amiloride)
–> surgery
phaeo
adrenal tumour producing adrenaline/noradrenaline
SWEAT, PALP, TACHY, ANXIETY
HTN, HEADACHE,
othostatic hypo
cafe au lait
inc urinary adrenaline
T:
alpha blocker
b blocker
–> surgery
addisons
tired tanned tearful
GI
adrenocorticol insufficiency
low cortisol and aldost
= autoimmune
= or after stopping steroids
hypotension
GI upset
fatigue, depress
hypopigmentation
low Na, high K, acidosis,
hyperpigment, dehydration
synACTHhen test (short acth) autoantibodies
T: hydrocort and fludrocort
also in crisis –> fluid
acromegaly
pit tumour –> GH
DIAG: ogtt w GH meas
- IGF1 will also be raised
htn sweating heaaches visual field (temporal)
spade hands, big jaw/brow, coarse skin, sweaty
big lips, tongue, goitre, organomegaly, low voice
OA/arthropathy, carpal tunnel, pseudogout
prox myopthy, mononeuropathy
cv disease
htn, dm
polyps, crc
T:
somatostatin analogue (octreotide)
GH receptor antag
- sugery + radio
congenital adrenal hyperplasia
HTN
high acth
female virilisation at birth
renal cell carcinoma (adenocarcinoma)
renal cell adenocarcinoma -HAEMAT -LOIN PAIN -ABDO MASS may have fever, varicocoele
paraneoplastic:
hypercalcaemia, polycythaemia, htn
US, IV pyelogram
bladder cancer
painless frank haematuria
risk: smoking, industrial toxins (dyes), age>50
Hyperthyroid
60% graves
- autantibodies
- 30% have eyes (proptosis, exop, lid lag)
- painless goitre
- 50% cured by 18m carbimazole
toxic multinod (Painless G) toxic adenoma (no G) - these two may require surgery or radioiodine rather than carbimazole
subacute thyrotoxicosis (de Q) -PAINFUL GOITRE -low isotope uptake -self limiting -raised esr (often post viral) treat w nsaids
drugs amiodarone, lithium
hypothyroid types/causes
primary atrophic
- no goitre
hashimotos
- can be initially hyperth
- GOITRE
- autoantibodies
in subacute (dq) get hyperthyroid, then hypothyroid
- self limiting post viral
- painful goitre, low isotope uptake, high ESR
also amiod, lithium, iodine defic (G)
hyperthyroid sx
anxiety, hot, sweaty
```
palpitation, tachycardia, af
cardiomyopathy
tremor
diarrhoea
menstrual
proximal myopathy
pretibial myxoedema
~~~
Hyperthyroid treat
b block vs Sx
Anti-thyroid: carbimazole
?block and replace
!!! risk of agranulocytosis —> neutropenia
(watch for sore throat/fever)
radioiodine
surgery
leaves pt hypothyroid - levothyroxine
thyroid storm
can complicate hyperthyroidism
+++ anxiety, tremor, tachy, fever, sweat, confusion
fluid
steroid
b block
carbimazole
Hypothyroid symptoms
Sx
- depress, loss of energy, cold
- hairloss (frontal), loss of eyebrows
- puffy dry skin, complexion
- hoarse voice
- cardiomyopathy, bradycardia
- wg, constip, menorrhagia
- carpal tunnel
- myalgia, cramps, weakness, slow reflexes
hypothyroid association
turners, downs, CF
pbc
treatment - levothyroxine
- titrate dose vs symptoms and blood levels
- high dose may trigger angina
NB AMIODARONE CAUSES THYROID PROBLEMS - both hypo and hyper
acute kidney injury definition
creat rise by 26 micromols/l in 48hrs
creat rise by 50% of baseline in a week (baseline from 3m)
oliguria (less than 0.5ml/kg/hr)
Acute renal failure causes and approach
Pre-renal
- hypovol, sepsis,
Renal
- T.I.D (tubulointerstitial disease)
- from nsaids, gentamycin, ace, ciclosporin
- from ischaemia
- from gn
- also haemolytic uraemic syndrome
Post renal (us shows hydronephrosis)
- stones
- prostate
- retroperitoneal fibrosis
—> Manage pulm oedema and hyperkalaemia
If pulm oed, hyperkal, acidosis, encephalop, pericarditis
—> dialysis
acute renal failure
prerenal (50%) vs atn (30%)
prerenal
- hypoperfusion (hypovol, sepsis)
- tubules still working so Na is resorbed
(low urine Na, high serum Na) and urine is concentrated (high osmol)
atn (tin)
- ischaemia
- nephrotoxins (nsaid, abx)
- hepatorenal syndrome
- GN, vasculitis, myeloma, HUS
- –> high Na in urine and dilute
nephrotoxic drugs
gentamycin, streptamycin (aminoglycosides)
radiocontrast
nsaids
ace/arb
immunosuppress (cyclosporin, methotrexate)
chemotherapy
serious comps of acute renal fail
hyperkalaemia (tall t, small p, wide qrs, pr)
- give ca gluconate
- give insulin glucose
- give calcium resonium/salbutamol
pulmonary oedema - sit up, high flow o2 - furosemide 120mg IV over 1 hr - morphine 2.5 IV (cause venous dilation) (+metoclopramide) -- HAEMODIALYSIS -- CPAP
acute renal failure management
often occurs w illness, sepsis, nephrotoxic drugs
- is cause pre, intra, or post renal?
oliguria raised urea (7) and creat (120)
nausea/vom
bleeding, htn
- –> risk high K and met acidosis
- –> risk vol overload - pulm oedema
Mx:
- o2 sats, listen to chest - ?pulm oedema
- ?give fluid, catheterise
- test urine (pre vs atn)
- stop nephrotoxins
- watch bloods - hyperkalaemia?
- US abdo/kidney - obstruction?
—> DIALYSIS
(acidotic, hyperkal, p.oed, pericard, enceph)
indication for dialysis in acute renal fail
pulmonary oedema persistant hyperkal severe met acidosis uraemic encephalopathy uraemic pericarditis
Nephritic syndrome
type of acute kidney diysfunction
HAEMATURIA w RED CASTS
mild proteinuria
HTN (fluid retention)
urea and creat, low gfr
may be seen 2/3 weeks post strep pyog
mx: ace vs htn and prot diuretic if oedema ?dialysis if ureamic ? biopsy
Chronic renal failure features
tiredness
anaemia (take EPO)
bone probs: low Ca, high PO4, high PTH
lose sex drive
renal bone disease
2dry hyperparathyroid
see high PTH but low/norm Ca
due to failure of vit D metab by kidneys
- > low Ca abs
- -> inc PTH release
- also phosphate retention by kidneys
= causes bone disease (demin) - ALP+
T: vit D, phosphate binders
Systemic renal probs
DM myeloma renovascular disease goodpasture vasculitides (weg, mp, pan, HSch) SLE, SSc
amyloid
haemolytic uraemic syndrome (diar, haemolysis, thrombocyto, renal)
cryoglobinaemia (cold, renal, urticaria)
Polycystic Kidney
autosomal dominant (95% type 1 chrom 16, 5% chrom 4) 25% cases are spontaneous
screening if FH by US
-need more cysts if older
ie 2 30, 4 bilat>60
prog growth of cysts
- haemat, pain, renal imp, htn
associated with berry aneurysm (SAH in 10%)
renovascular disease
mainly due to atheroma
see htn resistant to treatment
US - asymmet kidneys
angiography
risk - smoking, cholest etc
tx: stenting/plasty
Reflux nephropathy
Kidneys can become scarred and shrunken due to chronic tubulo interstitial disease/nephritis
Assoc w recurrent UTI’s (pyelonephritis)
Ix:
IV urogram
DMSA (radio scan of kidney tissue - shows scarring)
Micturating cystogram (uses xray)
Treat uti, htn, ?steroids, dialysis
SLE
kidney impairment - GN
also facial rash
Tubulo interstital disease
Interstitial nephritis
Intrinsic renal failure
Accounts for 20% of dialysis
Can present w proteinuria, haematuria or in renal failure
- do UE’s, urine protein and mc+s, us and ?biopsy
May be acute -renal fail (?+ fever, rash, eosinophilia)
- often due to drugs
- -abx (gentamycin), nsaids
- also infection, sjogrens
Chronic
- presents with crap renal function, htn, polyuria
- small kidneys on us
- often due to REFLUX - rec pyelonephritis
- also long term analgesia, gn, ischaemia, metabolic (uric acid, myeloma, high ca), toxins (heavy metals), sarcoid
T: identify and correct cause
- corticosteroids
- dialysis
renal vein thrombosis treat
warfarin 3-6months (inr 2-3)