227 AKI Flashcards
What is the effect of renal failure on the drug action of teicoplanin?
Has a prolonged half life in renal failure
What is the effect of renal failure on the drug action of teicoplanin?
Has a prolonged half life in renal failure
At which level of creatinine clearance is nitrofurantoin contra-indicated for treatment of UTIs?
Where does bendroflumethiazide act in the renal system?
At the beginning of the distal convoluted tubules - inhibits water and salt absorption
Name 2 types drugs which can cause pre-renal AKI
5 types listed
NSAIDs Loop diuretics e.g. furosemide and bumetanide Laxatives e.g. bisacodyl/ senna ACEI - ramipril/ lisinopril ARBs - losartan/ candesartan
Name 2 drugs which can cause pre-renal AKI
NSAIDs
Loop diuretics e.g. furosemide and bumetanide
Laxatives e.g. bisacodyl/ senna
What do NSAIDs inhibit the production of in the kidney which are potent vasodilators?
Prostaglandin E2, I2 and D2 - maintain renal circulation
What do NSAIDs inhibit the production of in the kidney which are potent vasodilators?
Prostaglandin E2, I2 and D2 - maintain renal circulation
At which level of creatinine clearance is nitrofurantoin contra-indicated for treatment of UTIs?
Where does bendroflumethiazide act in the renal system?
At the beginning of the distal convoluted tubules - inhibits water and salt absorption
Below which GFR are thiazide diuretics unlikely to be of use?
GFR
Name 2 drugs which can cause pre-renal AKI
NSAIDs
Loop diuretics e.g. furosemide and bumetanide
Laxatives e.g. bisacodyl/ senna
Name a type of drug which can cause hypokalaemia
Loop diuretics e..g. furosemide, bumetanide
Thiazide diuretics e.g. bendroflumethazide
What do NSAIDs inhibit the production of in the kidney which are potent vasodilators?
Prostaglandin E2, I2 and D2 - maintain renal circulation
Which anti rejection meds are used in renal transplant? What is their effect?
Ciclosporin and tacrolimus - causes intense vasoconstriciton of the microvasculature of the kidney
Where in the kidney do ACEIs exert their effects?
Efferent arteriole
What is released from the adrenal cortex in response to increased potassium in the extracellular fluid of the cortex?
Aldosterone
Give 2 e.g’s of what can cause an increase in serum urea
3 listed
Corticosteroid treatment
Tetracycline treatment
GIT bleed
Name 3 types of drug which can cause hyperkalaemia
6 listed
ACEI ARBs Spironolactone Amiloride NSAIDs Potassium supplements
Name a type of drug which can cause hypokalaemia
Loop diuretics e..g. furosemide, bumetanide
Thiazide diuretics e.g. bendroflumethazide
How does metformin cause lactic acidosis?
Decreases gluconeogenesis - from lactate in the liver + promotes conversion of glucose to lactate which results in additional lactate in the blood.
Can happen in diabetic patients with renal impairment - metformin renally excreted - will accumulate.
Which anti rejection meds are used in renal transplant? What is their effect?
Ciclosporin and tacrolimus - causes intense vasoconstriciton of the microvasculature of the kidney
At what level of serum creatinine is severe AKI considered?
> 500umol/L
What is the RIFLE classification of AKI?
Risk - SCr x1.5 within 48 hours UO 3 months
Give 1 eg of what can cause a decrease in serum urea
3 listed
Decrease protein intake
Liver failure
Sodium valporate
What is the most common cause of intrinsic injury to kidneys?
Renal ischaemia causing acute tubular necrosis
Name 2 causes of increased serum creatinine
Increased muscle mass
Ingestion of red meat
Rhabdomyolysis
Decreased tubular secretion eg trimethoprim
What are the S&S of pre-renal injury - uraemia?
Hypotension
Weak and rapid pulse
Decreased JVP
Which markers on urinalysis differentiates between a pre-renal injury and an intrinsic injury?
SG
Osmolality
Sodium
Where is the injury (pre-renal/intrinsic) here:
SG >1.020
Osmolality >500
Na
Pre-renal
Where is the injury here (pre-renal/intrinsic) here:
SG 40
Ratio >1%
Intrinsic
What is the most common cause of intrinsic injury to kidneys?
Acute tubular necrosis
Which 2 types of drugs can cause rhabdomyolysis?
Statins
Calcineurin inhibs - ciclosporin
Name 2 types of drugs which can cause hyperkalaemia
ACEI
ARBs
Spironolactone
Which drug can cause increased serum creat?
Trimethoprim
Name 2 drugs which can cause irreversible renal damage
Gentamicin
Ibuprofen
Name a drug which can cause hypercalcaemia, increased Ca excretion in urine/renal stones
Calcium preps
Vit D