3. Blackouts/Fainting Spells
One of the most common reasons for damage to the heart and its surrounding vessels is the additional work that a heart must do to try to pump blood through a blocked artery or a valve that has become constricted and narrowed. The result is less oxygen is circulating throughout the body causing lightheadedness, shortened breaths, and sometimes fainting or blacking out. This is cause to see a doctor immediately.