For the last three of the nearly six decades Shirley Estes, 80, has been married to her husband Harry, since his first heart attack and quadruple bypass at age 51, she has spent so many nights and early mornings in the Eastern Maine Medical Center emergency room she has lost count. Most of the time, Shirley handled her husband's unpredictable heart health by herself. Last summer, she laid slacks and a blouse on her bed each night so she could quickly change out of her nightclothes and rush her 81-year-old, ill husband to the hospital, a few miles away in Bangor.