After analyzing the relationship between the feature "lat_im" and the task of determining whether the myocardial infarction complications data shows chronic heart failure, it is important to note that the feature "lat_im" is related to the location of the myocardial infarction.

To create the dictionary, we need to examine the relationship between each possible value of the feature "lat_im" and the target variable.

Here is the dictionary for the "lat_im" feature:

```json
{
	"no": ["QRS has no changes", "there is no infarct in this location"],
	"yes": ["QRS is like Qr-complex", "QRS is like QS-complex", "QRS is like QR-complex"]
}
```

In this dictionary, the possible values for the feature "lat_im" associated with the target class "no" are "QRS has no changes" and "there is no infarct in this location". For the target class "yes", the possible values for the feature "lat_im" are "QRS is like Qr-complex", "QRS is like QS-complex", and "QRS is like QR-complex".

Please note that any values not mentioned in this dictionary are either not applicable or do not provide enough information to determine the presence of chronic heart failure.