Doylestown Hospital's cardiac catheterization program ranks among the best in the nation for performing successful emergency angioplasties to open blocked arteries during a heart attack and is at the forefront in the diagnosis and treatment of other life-threatening cardiovascular diseases. With the recent addition of two new cath labs -- bringing the total to four -- the Heart Institute of Doylestown Hospital has the enhanced capabilities and state-of-the-art equipment that rival -- and sometimes exceed -- those found only in major metropolitan teaching hospitals.