Based on prior knowledge, paroxysms of supraventricular tachycardia on ECG at the time of admission to the hospital (n_r_ecg_p_08) can be an important feature in determining the presence of chronic heart failure in myocardial infarction complications. Supraventricular tachycardia is a rapid heart rate originating above the ventricles, which can cause heart failure if left untreated.

To analyze the relationship between the feature and the task, we can look at the possible values of n_r_ecg_p_08 for each target class ('no' and 'yes') and see if there is a pattern or significant difference between the two.

Here is the dictionary analysis for the given feature:

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

Since we only have two possible values for n_r_ecg_p_08 ('no' and 'yes'), it is not necessary to include all possible values in the dictionary. The values 'no' and 'yes' correspond to the absence and presence of paroxysms of supraventricular tachycardia on ECG, respectively. 

Please note that this analysis assumes that the feature values provided are the only relevant values for this task. If there are additional or unknown values, they are not included in the dictionary.