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The following patient is thought to be at risk of developing acute tubular necro

ID: 3520189 • Letter: T

Question

The following patient is thought to be at risk of developing acute tubular necrosis having been exposed to a nephrotoxin. Based on the results below, which of the following conditions are they likely to have?

Parameter

Normal range

Patient 1

Plasma

Albumin

35-50 g/L

38

Urea (BUN)

2.5-7.1 mM

10.2

Creatinine

61-107 uM

161

Potassium

3.5-5 mM

4.1

pH

7.35-7.45

7.36

osmolality

275-299 mOsMol/kg

272

Urine

Protein

Negative

negative

Glucose

Negative

negative

Osmolality

50-1200 (>500 if excretion rate lower than normal)

660

Urine output

>0.5 ml/kg per hour

0.52 ml

a.

Nephrotic syndrome

b.

The prodromal phase of acute tubular necrosis

c.

Nothing, the patients blood results do not indicate a compromise of renal function

d.

Acute glomerulonephritis

e.

The oliguric phase of acute tubular necrosis

Explanation / Answer

b. Prodromal hase of acute tubular necrosis. In prodromal phase urea and creatinine increases suddenly. In nephrotic syndrome, albumin value decreases and in glomerulonephritis, urea and creatinine value decreases.