```json
{
	"no": ["no"],
	"yes": ["yes"]
}
```
Based on the given feature description, there is only one possible value for the feature "n_r_ecg_p_02", which is either "no" or "yes". Therefore, for the target class "no", the only possible value for the feature is "no", and for the target class "yes", the only possible value for the feature is "yes".