Unusual treatments: Viagra for babies and cowskin for heart holes

This severely premature baby was barely clinging to life, but doctors gave him Viagra to boost his lungs, now at two years old he's doing great.   
Dr Alan Fenton, from the hospital unit explains in the article ,“It opens the blood vessels and arteries and that is why it is used in impotency. With neo-natal lung disease there is not enough blood going into the lungs and it improves the blood supply to the lungs, allowing oxygen to be taken around the body.”
Fascinating. Want to know about the cow skin, read the story.