IM Essentials: Ch. 66 - Approach to Kidney Disease

Question 1

When you first approach completely undifferentiated kidney disease, what is the first question you should ask?

Answer 1

How long has it been present?

AKI and CKD is the first branch point in the assessment of elevated kidney labs.

Question 2

CKD is defined as kidney disease that has persisted for longer than _____________.

Answer 2

3 months

Question 3

What factors can alter BUN?

Answer 3

• High-protein diet
• GI bleed
• Liver dysfunction
• Catabolic states

Question 4

eGFR equations should not be used during ______________.

Answer 4

AKIs; they are steady-state estimations

Question 5

Persistently dilute urine (specific gravity < 1.007) is called ____________.

Answer 5

hyposthenuria

Question 6

Persistent specific gravity of 1.010, regardless of hydration state, is called ______________.

Answer 6

isosthenuria

Question 7

Urine microscopy needs to be done within ____________.

Answer 7

2-4 hours of voiding; cells will lyse after this much time has elapsed

Question 8

Review the ranges of proteinuria.

Answer 8

• < 150 mg/day: normal
• 150 mg/day to 1 g/day: febrile illness, heavy exercise
• 1 g/day to 3 g/day: nephritic syndromes
• > 3 g/day: nephrotic syndrome