Based on prior knowledge, ventricular paroxysmal tachycardia in the anamnesis (feature nr_08) is a potential risk factor for chronic heart failure. Therefore, it is likely that patients with a history of ventricular paroxysmal tachycardia may show chronic heart failure complications.

Here is the dictionary representing the relationship between feature nr_08 and the likelihood of chronic heart failure complications:

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

Explanation:
- For patients with chronic heart failure complications, the feature nr_08 can be "yes". This indicates that the patient has a history of ventricular paroxysmal tachycardia.
- For patients without chronic heart failure complications, the feature nr_08 can only be "no". This suggests that these patients do not have a history of ventricular paroxysmal tachycardia.

Note: Since the feature nr_08 is a categorical variable with two possible categories, any other categories besides "no" and "yes" are not included in the dictionary.