Based on prior knowledge, the feature "ritm_ecg_p_08" represents the ECG rhythm at the time of admission to the hospital, specifically sinus rhythm with a heart rate below 60.

To analyze the relationship between this feature and the presence of chronic heart failure as a myocardial infarction complication, we can consider the following:

1. If the value of "ritm_ecg_p_08" is "no", it implies that the patient's ECG rhythm at admission was not sinus rhythm with a heart rate below 60.
2. If the value of "ritm_ecg_p_08" is "yes", it indicates that the patient's ECG rhythm at admission was sinus rhythm with a heart rate below 60.

Now, let's create the dictionary representing possible values of "ritm_ecg_p_08" for each target class:

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

In this case, both target classes have only one possible value of "ritm_ecg_p_08" each.