In this final paper on the topic of treating patients with acute myocardial infarction in the outpatient emergency room, details will be discussed about the risks that lead to acute myocardial infarction, i.e. the etiology, clinical picture, diagnosis, and finally recovery from this life-threatening condition. Likewise, through this paper, the procedures performed in the outpatient emergency department in the treatment of acute myocardial infarction will be explained to the readers in more detail. This paper will also explain the differences between angina pectoris and acute myocardial infarction, since they often manifest similarly. The structure of the emergency service, what is an emergency service, the procedures and peculiarities of the emergency service team in treating patients with acute myocardial infarction are briefly described. It is also described which are the most common and most important complications of acute myocardial infarction, and which are specific to the conditions of the outpatient emergency service, as well as which procedures are carried out if they occur. At the end of the paper, the statistical data of the Institute for Emergency Medicine of the Zagreb County - Sveti Ivan Zelina branch are presented.