In a quiet moment, he reflects on what an effective treatment could mean to his profession.
"My dad was a general practitioner. He was old school; he made house calls, I used to go with him in the evening. And he had two books that had all the information he needed to use in medicine. I have bookshelves just on dermatology. The amount of advancements in knowledge is mind-boggling," says Karpman.
"To have something that actually repairs that damage that was done (from a heart attack), it's remarkable."