Kristine Breese was a 33-year-old mother of two children, juggling family responsibilities and a full-time job in public relations. She had run several marathons and was training for a triathalon.
For 10 years, she had fainting spells that she thought were due to dehydration and stress (she fainted on her wedding day.) But when she fainted in front of a family member, she went to the emergency room.
Doctors ruled out several neurological problems, and during one of the final tests, a tilt-table test, Kristine went into cardiac arrest.