Margaret Van Bruggen’s family had just 24 hours to decide whether to let Duke surgeons perform a heart-valve-transplant surgery that had never been done before.

Martha Penturf holds her 4.5-month-old son Atlas, who had open heart surgery in November performed by Dr. Kristine J. Guleserian, during a checkup appointment at Medical City Children's Hospital ...

Margaret Van Bruggen’s family had just 24 hours to decide whether to let Duke surgeons perform a heart-valve-transplant surgery that had never been done before.