This document outlines 5 fields related to cardiology: 1) Adult Cardiology which treats heart diseases in adults, 2) Pediatric Cardiology which diagnoses and treats cardiac conditions in children, 3) Cardiac Examination which is a physical exam used to check for cardiovascular issues, 4) Cardiac Arrest which occurs suddenly due to an electrical malfunction and irregular heartbeat, and 5) Cardiac Electrophysiology which tests the heart's electrical activity to detect abnormal heartbeats and determine appropriate treatment.