Off the air, Greig and Christian tweeted about the practical joke, promising "more on the #royalprank." The pair's Twitter accounts were later taken down.
A St. James's Palace spokesman said the Duke and Duchess of Cambridge were saddened to learn of Saldanha's death.
Another palace spokesman told CNN that "at no point did the palace complain to the hospital about the incident. On the contrary, we offered our full and heartfelt support to the nurses involved and hospital staff at all times."