Chronic Kidney Disease Flashcards
Define chronic kidney disease
The presence of kidney damage or decreased kidney function for three months or longer.
Define accelerated CKD
A sustained decrease in GFR of at least 25% and a change in GFR category within 12 months, or when GFR decreases by 15ml/min per year.
Define kidney failure
GFR < 15ml/min, or when dialysis or transplant is required.
Describe Stage 1 CKD
Kidney damage
Normal or high GFR
GFR>90
Describe Stage 2 CKD
Kidney damage
Mild reduction in GFR
GFR = 60 - 89
Describe Stage 3 CKD
Kidney function is moderately impaired
3a: GFR = 45 - 59
3b: GFR = 30 - 44
Describe Stage 4 CKD
Kidney function is severely impaired
GFR = 15 - 29
Describe Stage 5 CKD
Advanced disease or patient is on dialysis
GFR <15
What does it mean if the suffix “p” is added onto the CKD classification?
The patient has proteinuria as well as decreased GFR.
Give five pieces of evidence that indicate CKD, other than GFR.
- Persistent microalbuminuria.
- Persistent proteinuria.
- Persistent haematuria (after exclusion of other causes – e.g. urological disease).
- Structural abnormalities of the kidneys, demonstrated on ultrasound scanning or other radiological tests
- Biopsy-proven chronic glomerulonephritis.
List possible causes or risk factors for CKD
Diabetes Glomerulonephritis Hypertension Renovascular disease Polycystic kidney disease Infective, obstructive and reflux nephropathies Hypercalcaemia Multisystem diseases such as SLE Neoplasms Myeloma
Describe the specific symptoms that can present in sever CKD
Anorexia, nausea and vomiting Fatigue, lethargy, weakness Weight loss Dyspnoea, pulmonary oedema, peripheral oedema Nocturia, polyuria, headache Pruritus Impotence (men), amenorrhoea (women)
Describe the clinical signs that can present in a patient with advanced CKD
Skin pigmentation or pallor
Excoriation (skin picking) due to pruritus
Hypertension but with postural hypotension
Peripheral oedema
Left ventricular hypertrophy
Pleural effusions
Peripheral vascular disease, peripheral neuropathy
Give five classes of drugs that are particularly significant in kidney disease
NSAIDs penicillins/aminoglycosides chemotherapeutic drugs narcotics ACE inhibitors/ARBs
How is eGFR calculated?
eGR is calculated by measuring serum creatinine and using a set formula.