They call them heart days.
They're as celebrated as birthdays in the Rippy Family.
It's been a little more than a year since 4-year-old Sydney Rippy got her new heart on April 25, 2012. Her big sister, 7-year-old Madison, got her new heart on Aug. 7, 2009.
Both sisters were diagnosed with dilated cardiomyopathy, a rare condition that impedes the heart's ability to pump blood efficiently. It can cause sudden cardiac death.
Mayo Clinic surgeons performed heart transplants on the girls, saving their lives. It's extremely rare for two children from the same family to need heart transplants.
The blond-haired, blue-eyed sisters with matching ponytails bounced around their Blaine living room, smiling and giggling, one day last week.
As they played, the picture of childhood energy, mother Linsey Rippy talked about life with two transplant kids. It's overflowing with happy, grateful moments, but it's also one of worry, medical bills, developmental disabilities, dreams deferred and guilt.
Linsey and Noel Rippy are upbeat and affectionate with their daughters. The girls love construction and building. It's Dad who likes to handle the occasional girls' night with them, complete with nail painting and hairstyling. The Rippys spend time each week with grandparents, aunts and uncles. Linsey is home full-time caring for them, managing their schedule of medicine, doctor's appointments and therapy.