CHICAGO (Standard&Poor's) Oct. 1, 2010--Standard&Poor's Ratings Services revised the rating outlook to negative from stable on Parkview Health System Obligated Group, Ind.'s series 1998, 2001A, 2009A, 2009B, 2009C, and 2009D bonds, issued by Fort Wayne Hospital Authority, Ind. and the Indiana Finance Authority. At the same time, Standard&Poor's affirmed its 'A+' long-term rating and underlying rating (SPUR) on the obligated group's bonds. Standard&Poor's also affirmed its 'AAA/A-1' rating on Parkview's series 2009B and 2009D revenue bonds and its 'AAA/A-1+' rating on the series 2009C bonds. "The outlook revision is based on our view of Parkview's weakened operations and liquidity," said Standard&Poor's credit analyst Brian Williamson. Parkview Health System's operating margin