Uraemia is the occurrence of

Options

A. Blood in urine
B. Excess of urea in blood
C. Excess of sugar in blood
D. Deficiency of sugar

Answer

**Step-by-Step Solution:**

1. **Understanding Uraemia**: Uraemia is a medical condition associated with kidney dysfunction. It occurs when the kidneys are unable to effectively filter waste products from the blood.

2. **Identifying the Cause**: The primary cause of uraemia is severe and irreversible damage to the kidneys. This damage prevents the kidneys from performing their essential function of filtering out waste, particularly urea.

3. **Recognizing the Symptoms**: As a result of this impaired kidney function, there is an accumulation of urea in the bloodstream. This condition can lead to various symptoms and can be life-threatening if not addressed.

4. **Evaluating the Options**:
- **Option A**: Blood in urine - This is not correct as it refers to hematuria, not uraemia.
- **Option B**: Excess of urea in the blood - This is the correct definition of uraemia.
- **Option C**: Excess of sugar in blood - This refers to hyperglycemia, which is unrelated to uraemia.
- **Option D**: Deficiency of sugar - This is also incorrect as it does not pertain to uraemia.

5. **Conclusion**: Based on the definitions and the evaluation of the options, the correct answer is that uraemia is the occurrence of excess of urea in the blood.

**Final Answer**: Uraemia is the occurrence of excess of urea in the blood.

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