Based on the feature description, it is not possible to directly analyze the relationship between the feature "lat_im" and the target variable "chronic heart failure". The feature "lat_im" describes the presence of a lateral myocardial infarction, but it does not provide information specifically related to chronic heart failure.

To create the dictionary, we should assume that the presence of a lateral myocardial infarction could be associated with chronic heart failure. However, without additional information or prior knowledge, it is difficult to determine the specific values of "lat_im" that are associated with chronic heart failure.

As a result, the dictionary will include all the possible values of the "lat_im" feature for each target class, without any specific values associated with chronic heart failure:

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

Please note that this analysis assumes a lack of specific knowledge about the relationship between the "lat_im" feature and chronic heart failure. If there is additional information available or a specific relationship between the feature and target variable, please provide it for a more accurate analysis.