Heidi Pratt

Hills star Heidi Pratt has been rushed to a Costa Rican hospital with an undisclosed medical emergency, Usmagazine.com has learned exclusively. Pratt's husband, Spencer -- who is competing with his wife on NBC's I'm a Celebrity...Get Me Out of Here -- is traveling with her to the hospital, a source in Costa Rica confirms. No further details have been made available as to the specifics of Heidi's condition or what it means for the series.

Heidi Pratt was hospitalized today in Costa Rica during her and Spencer's stay in "isolation" from the rest of the cast of the NBC reality series. Spencer accompanied his wife on the ambulance ride and remains by her bedside. Various reports said she was suffering from a stomach infection, but there was no immediate comment from either NBC or Spedi's rep.

The news was broken by Spencer's sister, Stephanie Pratt, who tweeted that "[Heidi was] rushed to the hospital and has an IV in her arm after being locked in a dark room for 3 days w no food or water. Pls pray she will be ok…Her family is flying out to see her in the hospital." The younger Pratt blames NBC for going "too far" in punishing the Hills couple after they tried to quit the bug-eating, jungle-surviving show after just one episode and then begged to return.