neph Flashcards
Chronic renal disease
Decrease in renal function/glomerular filtration usually as the result of a chronic or destructive renal disease. The stages of CKD are not reversible - you can never restore lost function, only prevent worsening.
Most common cause: diabetic nephropathy, hypertensive nephroscleropathy
Stage I CKD
GFR > 90
Stage II CKD
GFR 60-89
Stage III CKD
GFR 30-59
Stage IV CKD
GFR 15-29
Stage V CKD
GFR < 15. Requires dialysis or transplant
FeNa
Most sensitive differential test for acute renal failure.
1% = renal
Most common cause of pre-renal failure
dehydration and CHF
Nephrolithiasis
Most common in summer months. Calcium stones are the most common.
For stones <6mm, treatment is pain control and fluids
First imaging to do is xray; best imaging to do is CT