Background Renal Disease and Haematuria Flashcards
What are the functions of the kidney [8]
Body fluid homeostasis Electrolyte homeostasis Acid base balance Regulate BP Remove physiological waste Vit D production Erythropoietin production Renin production
How do you measure kidney function [6]
Dipstick eGFR U+E BP Urine output - good for acute illness Cystatin C
What is shown on dipstick and what does it suggest [9]
Protein Haematuria Leucocytes = UTI Nitrites = gram -ve UTI Glucose = DM / preg / sepsis Ketones = DKA / starvation Bilirubin = haemolysis Urobilinogen = haemolysis / liver disease Specific gravity = dehydration
What is urea and what does increased level suggest [6]
Breakdown product of AA so protein catabolism will increase ACUTE GI BLEED Acute illness Increased intake Steroids Dehydration
What causes decreased urea
Liver disease
As its made in the liver
How do you differentiate a high urea caused by renal or dehydration [2]
Dehydration
- Higher urea rise than creatinine
- Associated hypernatramia
What is creatinine [2]
By product of protein turnover
Higher risk in AKI than urea
What causes other electrolyte disturbances
Renal disease
What is cystitis C
Predictor of CVD disease
What does proteinuria suggest [5]
GN DM Amyloidosis Myeloma Increased risk of CVD disease
What should you do if proteinuria found on dipstick [4]
Bloods for CVD disease + autoimmune screen
ACR - picks up earlier stage
PCR
24 hour urine collection = gold standard
What are indications for renal biopsy [4]
Protein >1g / day
Decreased renal function but normal sized kidney
Suspected RPGN
Suspected multi-system disease e.g. RA
What does an atrophied kidney suggest
Damage been there for a while
How is a renal biopsy completed [3]
LA
USS guidance
Go in lower pole fixed in inspiration
What are the main complications of renal biopsy and how do you prevent [4]
Haemorrhage
- Check platelet, BP, coag
- Stop anti-coagulation
- Stay in bed 24 hours post
- No heavy lifting for 2 weeks
What should you do after biopsy [2]
Light + electronmicroscopy to see tubules
Immunoflurescence for immune deposition - IgA
What should you do if dysuria, frequency, nocturia, urgency
Primary Ddx = UTI
What suggests prostatic aetiology [3]
Difficulty initiating
Poor stream
Dribbling
What should you do if oliguria
Assessment and investigation of AKI