Nephrology Flashcards
(222 cards)
What type of acid-base disorder is seen in those with mesenteric infarcts
Metabolic Acidosis
What conditions are seen in normal anion gaps (metaboic acidosis)
GI bicarbonate loss: Diarrhoea, uterosigmoidostomy, fistula
Renal tubular acidosis
Drugs (Acetazolamide)
Ammonium chloride injections
Addison’s
What conditions cause a raised anion gap (metabolic acidosis)
Lactate (shock, hypoxia)
Ketones (Diabetic Ketoacidosis, alcohol)
Urate: renal failure
Acid posioning (salicylates, methanol)
What defines a normal anion gap
8-14 mmol/L
What medication commonly causes nephrogenic diabetes insipidus
Lithium
What psychiatric drug often causes SIADH
Fluoxetine (SSRIs)
What medication should all diabetic patients with an albumin:creatinine ratio of 3mg/mmol or more be started on
ACEi or ARBs
What does an albumin: creatinine ratio > 2,5 indictae
Microalbuminuria
What is the most likely complication for a patient with CKD on haemodialysis
Ischaemic Heart Disease
When should someone over the age of 45 be referred for painless haematuria
Unexplainied visible haematuria or visible haematuria that persists after UTi treatment
When should someone over the age of 60 be referred for haematuria
Unexplained nonvisible haematuria AND dysuria or raiswed WCC
Why is calcium carbonate given to people with hyperkalaemia
Protects against arrythmias (but doesn’t correct calcium levels)
What should be given to correct hyperkalaemia
Calcium Resonium
ECG changes seen in hyperkalaemia
Peaked t waves
Loss of p waves
Broad QRS complex
Sinusoidal wave pattern
How should hyperkalaemia be managed
IV Calcium Gluconate
Combined insulin/dextrose infusion
Nebulised Salbutamol
Calcium Resonium or loop diuretics
When should dialysis be considered in hyperkalaemia
Persistent + accompanied with AKI
What indicates severe hyperkalaemia
6.5mmol/L or higher
Management of severe hyperkalaemia
IV Calcium Gluconate
Insulin/dextrose infusion (to shift K+ from ECF to ICD)
Stop ACEi
What creatinine changes indicate AKI
> 26 mmol/L in 48 hours
> 50% in 7 days
What urinary output changes indicate AKI
<0.5 ml/kg/hour for more than 6 hours
What eGFR increases the risk of AKI
<60
When should someone with AKI be referred to nephrologist
- Renal transplant
- Unknown cause
- Vasculitis
- Myeloma
- No repsonse to treatment
- Stage 3 AKI
- CKD 4 or 5
- Meets criteria for dialysis
WHen does acute graft failure occur following a renal transplant
6 months
Three signs of an acute graft failure
Pyruira
Proteinuria
Rising Creatinine