In what is a sort of watershed event, a paper published (full text $19.95) in the Journal of Nursing Administration by authors Rabert and Sebastian declare "virtual ICUs" or "tele-intensivists" as an accepted way to improve patient safety in most hospitals.

UPDATE: According to reader David (who is not as cheap as I am, and read the full text), the account in the paper above is Lehigh Valley using iMDSoft.