How to help a person with a heart attack?

On the Internet, there are many articles on how to provide first aid in different situations. I know that there are special courses for the provision of emergency medical care. But in any case, you don't have to deal with it alone. First, call 911. The dispatcher will tell you what to do until the paramedics arrive. In some cases, a person can be saved only with the help of special equipment, for example such bimedis.com/search/search-items/anesthesiology-equipment . In such cases it's very important to help a person to wait for professional help.