Renal Flashcards
rise in creatinine AKI definition
25 mml/L in 48 hrs
over 50% in 7 days
rise in creatinine in past 48 hrs for diagnosis of AKI
25 microcol/L
rise in creatinine over past 7 days for diagnosis of AKI
over 50%
urine output for diagnosis of AKI
less than 0.5ml/kg/hr over minimum 6 hrs
renal causes of AKI
acute tubular necrosis
glomerulonpehritis
acute interstitial nephritis
haemolytic uraemic syndrome
rhabdomyolysis
pre renal causes of AKI
dehydration
shock eg sepsis, acute blood loss
heart failure
most common renal intrinsic cause of AKI
acute tubular necrosis
what cells are damaged in acute tubular necrosis
epithelial cells of renal tubules
medications that cause AKI
NSAIDs
gentamicin
diuretics
ACEi
how do ACEi affect the kidneys
they are reno protective
they are stopped in AKI as they reduce the filtration pressure, but are given to protect the kidneys in htn, diabetes, CKD
complications of AKI
fluid overload- pulmonary oedema
hyperkalemia
metabolic acidosis
uraemia
how is proteinuria quantified
urine albumin:creatinine
eGFR for diagosis of CKD
<60 ml/min for 3 months
urine albumin:creatinine for diagnosis of CKD
> 30 mg/mmol for 3 months
what medications help slow the progression of CKD
ACEi
SGLT-2 inhibitors
what medication are all patients with CKD put on
atorvastatin 20 mg
what happens to phosphate in CKD
what advice is given
rises
low phosphate diet and phosphate binders
what should be corrected before giving erythropoietin in CKD
iron deficiency
describe what happens in renal bone disease
calcium is low as the kidneys cant metabolise vitamin D into calcitriol
this causes a rise in PTH and activates osteoclasts, so calcium can be released from bones
when this is done with inadequate calcium supply, osteomalacia occurs
osteosclerosis also occur as osteoblasts match osteoclast activity, but without sufficient calcium this leads to unmineralised bone
pneumonic for indications for dialysis
AEIOU
acidosis
electrolyte imbalance
intoxication
oedema
uraemia
how might long term haemodialysis be carried out
tunnelled cuffed catheter
ateriovenous fistula
where is a tunnelled cuff catheter inserted
subclavian or jugular vein