This one is used during haemodialysis to prevent blood coagulation

Options

A. Warfarin
B. Haemolysin
C. Heparin
D. Hirudin

Answer

**Step-by-Step Solution:**

1. **Understanding Haemodialysis**: Haemodialysis is a medical procedure used to filter waste products and excess fluid from the blood when the kidneys are not functioning properly. It is essential to maintain the fluidity of the blood during this process to ensure proper filtration.

2. **Identifying the Need for Anticoagulants**: During haemodialysis, blood is circulated outside the body through a dialysis machine. To prevent the blood from clotting (coagulating) in the machine, anticoagulants are necessary.

3. **Evaluating the Options**: The question provides three options: haemolysin, heparin, and hedgidin. We need to determine which of these is an anticoagulant used in haemodialysis.

4. **Analyzing Each Option**:
- **Haemolysin**: This is a substance that can cause the lysis (destruction) of red blood cells. It is not used as an anticoagulant.
- **Heparin**: Heparin is a well-known anticoagulant that prevents blood coagulation. It is commonly used during haemodialysis to keep the blood flowing smoothly.
- **Hedgidin**: This is not a recognized anticoagulant and does not relate to the process of haemodialysis.

5. **Conclusion**: Based on the analysis, the correct answer is **heparin**, as it is specifically used during haemodialysis to prevent blood coagulation.

**Final Answer**: Heparin

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