Prasugrel wasn't tested in the wide range of heart patients who get Plavix, which is sold by Bristol-Myers Squibb (nyse: BMY - news - people ) and Sanofi-Aventis (nyse: SNY - news - people ).
And with a slow scanner, we wouldn't be able to freeze the motion of the heart and all we'd get is blurry images, like a car racing by on a photograph.
It will also make it harder to get new heart drugs approved and to market medicines that are already for sale but are not backed by big studies confirming their benefits.
By the same token, we know that helping people eat right and get physical activity helps reduce diabetes, heart disease and other kinds of chronic illness.
Annual deaths from congestive heart failure plummeted 22% by adding (and enforcing) a checklist to ensure all patients get the right medicines before they leave the hospital.