Blood analysis of a patient reveals an unusually high quantity of carboxyhaemoglobin content. Which of the following conclusions is most likely to be correct? The patient has been inhaling polluted air containing high content of

Options

A. carbon dioxide
B. carbon monoxide
C. carbon disulphide
D. chloroform

Answer

To solve the question regarding the patient's blood analysis revealing a high quantity of carboxyhemoglobin, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Carboxyhemoglobin**:
- Carboxyhemoglobin is formed when hemoglobin in the blood binds with carbon monoxide (CO). This binding is much stronger than the binding of oxygen (O2) to hemoglobin, which can lead to reduced oxygen transport in the body.

2. **Analyzing the Options**:
- The question suggests that the patient has been inhaling polluted air. We need to identify which pollutant could lead to an increase in carboxyhemoglobin levels.

3. **Identifying the Source of Carbon Monoxide**:
- Carbon monoxide is commonly found in polluted air, especially from sources like vehicle exhaust, industrial emissions, and smoke from burning fossil fuels.

4. **Conclusion**:
- Given that carboxyhemoglobin is specifically associated with carbon monoxide, if the patient has high levels of it, it is most likely due to inhaling air with a high content of carbon monoxide.

5. **Final Answer**:
- Therefore, the most likely conclusion is that the patient has been inhaling polluted air containing a high content of carbon monoxide.