Usually the patient will go through numerous tests and exams to conclude that it is Angina, and nothing else is going on with the heart that can be life threatening.  ACLS certification class will cover the types of medications that are used and will help the health care professional determine when and how it can  be ruled out.  The physician will also do blood work that will check to see if any heart muscle has been damaged also.  The tests include CK, Troponin,etc.  These tests are specific to heart muscle that has been damaged.