NEW YORK (Standard&Poor's CreditWire) Aug. 30, 1999--Standard&Poor's today lowered its underlying rating (SPUR) on District of Columbia's $300 million revenue bonds 1998A, B,and C series, issued for MedStar Health, Inc. (F/K/A Medlantic/Helix Parent, Inc.) to triple-'B'-plus from single-'A'-minus. Standard&Poor's also lowered its uninsured ratings on the District of Columbia's revenue bonds issued for MedStar Health, Inc. to triple-'B'-plus from single-'A'-minus. Standard&Poor's also lowered its SPUR on Maryland Health&Higher Educational Facilities Authority's $283 million revenue bonds series 1998A and series 1998B, issued for MedStar Health, Inc. to triple-'B'-plus from single-'A'-minus. The outlook has been revised to negative from stable. The uninsured and Standard&Poor's underlying rating's (SPUR's) are lowered based