On the morning of her doctor appointment, Andrea Pedersen had stopped at the gym to check her weight and blood pressure. She noted her measurements on her iPhone, and at the appointed time, she headed to a computer for a video chat with her physician. Altogether, she admits, it wasn't the typical prenatal visit. But it may be by the time her 7-month-old daughter, Anna, grows up. Pedersen, who lives in Rochester, was taking part in an experiment at the Mayo Clinic to test a new do-it-yourself model of prenatal care. And while it's not yet ready for prime time, experts say it's one more sign of how the pressure to reform health care, and rein in costs, is starting to transform modern medicine. The experiment is one of several taking place at Mayo's Center for Innovation, a breeding ground for new ideas.