First, the hospital he used as a backdrop in his news conference didn't like the idea of being a political prop.
Second, the hospital has a wing named for one of Governor Romney's Republican opponents. From the Washington Post:
"We find it unfortunate that Mr. Romney misappropriated the image and good will of St. Vincent's Hospital to further a political agenda." -- a spokesman for New York City's, St Vincent's Hospital
"Maybe next time Romney will choose for a backdrop a hospital that isn't home to the Rudolph W. Giuliani Trauma Center."
No comment from any New York hospital if the Romney staffer who set this up is in intensive care. (WaPo-The Trail)