1.   Any renal unit serving a district with cardiac surgery facilities would have significantly more patients developing acute postoperative renal failure.

2.   Discussion A problem in studying acute renal failure is the lack of a clearly agreed definition.

3.   Hypercalcemia has been observed in the diuretic stage of acute renal failure.

4.   Other adverse reactions due to systemic absorption, such as hypoglycaemia, rash, and acute renal failure, are rare.

5.   Our study also underestimates the incidence of acute renal failure in one other way.

6.   This is seen commonly in acute renal failure, and less commonly in chronic renal failure.