There is an exciting new clinical trial about to launch at Northwestern Medicine that uses an Apple Watch and an iPhone app and could revolutionize the standard of care for many with atrial fibrillation, the most common type of heart arrhythmia in the nation. Rod Passman, MD, is leading the trial and details how the NUCATS Institute and the CTSA Trial Innovation Network helped his team secure a $37 million NIH grant to conduct this work.