Based on the given feature "fibr_ter_03" and the task of determining whether the patient shows chronic heart failure, we can analyze the relationship between the feature and the target variable. 

Since the feature "fibr_ter_03" represents the use of Fibrinolytic therapy by Celiasum 3m IU, which is a medication used to dissolve blood clots, it is possible that its usage may be related to chronic heart failure. 

To analyze the relationship, we can review the data and identify the possible values of "fibr_ter_03" for each target class.

Here is a dictionary representing the relationship between the feature "fibr_ter_03" and the target variable:

```json
{
	"no": ["no"],  
	"yes": ["no", "yes"]
}
```

Explanation: 
- For the target class "no" (indicating absence of chronic heart failure), the possible value of "fibr_ter_03" is "no".
- For the target class "yes" (indicating presence of chronic heart failure), the possible values of "fibr_ter_03" are "no" and "yes".

This analysis suggests that the feature "fibr_ter_03" can have both "no" and "yes" values for the target class "yes" (chronic heart failure), indicating that Fibrinolytic therapy by Celiasum 3m IU may be used in patients with chronic heart failure.