Urea/electrolytes/creatinine

Question 1

Urea normal values

Answer 1

2.8-7.7 mmol/L

Question 2

Urea implications

Answer 2

Increasing trend indicate worsening renal function
-> patient may be drowsy

If very high, patient may go for renal dialysis and may be tired before/after HD.

Question 3

Creatinine (Cr) normal values

Answer 3

44-141 mmol/L

Question 4

Cr implications

Answer 4

Increasing trend indicate worsening renal function
-> patient may be drowsy

If very high, patient may go for renal dialysis and may be tired before/after HD.

Question 5

Potassium (K+) normal values

Answer 5

3.3-4.9 mole/L

Question 6

K+ implications

Answer 6

Outside of range -> may predispose to cardiac arrhythmias => don’t treat unless replacements given. Monitor ECG closely if repeat test not done yet