Based on your provided task and feature, we need to analyze the relationship between the usage of anticoagulants in the ICU (GEPAR_S_n) and the presence of chronic heart failure. 

To conduct this analysis, we would need a dataset that includes both the GEPAR_S_n values and the myocardial infarction complications data of the patients (specifically, whether they show chronic heart failure or not).

To generate the dictionary, let's assume we have a dataset with the required information. We will analyze the relationship between the GEPAR_S_n values and the presence of chronic heart failure:

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

Please note that the values in the list are just hypothetical examples. We would need actual data to conduct a more accurate analysis and provide a final dictionary.