Gov. George Pataki, showing no improvement five days after surgeons removed his appendix, was transferred Tuesday to a New York City hospital and underwent another operation. Doctors operated to alleviate a blockage in Pataki's digestive system, said his spokesman, David Catalfamo. Afterward, the governor was "awake, alert and resting comfortably," ... A blockage following abdominal surgery is relatively rare, said Daniel Herron, an assistant professor of surgery at Mount Sinai Medical Center in Manhattan.