CKD Diagnostic Criteria

Question 1

How many samples does a diagnosis of CKD need and how far apart?

Answer 1

2 samples 90 days apart.

Question 2

What is the equation used to measure eGFR?

Answer 2

Chronic kidney disease epidemiology collaboration (CKD-EPI).

Question 3

What is the description of G1 CKD?

Answer 3

Normal kidney function but urine findings or structural abnormalities or genetic trait point to kidney disease.

Question 4

Give the cut offs of GFR for each CKD stage?

Answer 4

G1 - >90
G2 - 60-89
G3a - 45-49
G3b - 30-44
G4 - 15-29
G5 - <15

Question 5

What are the cut offs for the ACR categories?

Answer 5

A1 - <3
A2 - 3-30
A3 - >30

Question 6

For how long should you monitor people with an AKI to see if they will progress to CKD?

Answer 6

2-3 years.

Question 7

What is the criteria for defining accelerated progression of CKD?

Answer 7

1. A sustained decrease in GFR of 25% or more and a change in GFR category within 12 months.
   OR
2. A sustained decrease in GFR of 15ml/min/1.7m2 per year.

Question 8

What are the 2 separate blood pressure targets for people with CKD?

Answer 8

Normal CKD - 140/90

CKD and diabetes (or ACR of 70 or more) - 130/80

Question 9

What are the blood test findings that would make you want to start a patient on dialysis?

Answer 9

Any of:

1. Resistant hyperkalaemia
2. eGFR <7ml/min
3. Urea >40mmol/l
4. Unresponsive metabolic acidosis

Question 10

What are the symptoms that would make you want to start a patient on dialysis?

Answer 10

Nausea
Anorexia
Vomiting
Profound fatigue
Itch
Unresponsive fluid overload