A patient with advanced renal failure is waiting for a suitable kidney donor for a transplantation operation. His blood urea nitrogen level is high and he is developing some of the signs of uraemia. What method can you adopt to keep this patient alive until a suitable donor can be found?

Explanation

To keep a patient with advanced renal failure alive while waiting for a suitable kidney donor, the following method can be adopted:

### Step-by-Step Solution:

1. **Understanding the Condition**: The patient is experiencing advanced renal failure, which leads to a buildup of waste products in the blood, particularly urea. This condition is known as uremia, which can be life-threatening if not managed.

2. **Choosing a Temporary Solution**: The most effective temporary solution for managing advanced renal failure is hemodialysis. This procedure helps to remove waste products and excess fluids from the blood.

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