An ailing resident in a ritzy Upper East Side co-op building stabbed her home health aide in the gut during an argument over her oxygen mask, sources said.
Barbara Salberg, 66, knifed the unidentified, 54-year-old female aide in a first-floor apartment at 210 East 73rd St., after the two argued over the mask on Saturday at about 12:30 p.m., sources told The Post.
Martinez knifeman who allegedly butchered man on California street was released just a day earlier
The victim was rushed by ambulance to Weill Cornell hospital, where she was listed in stable condition…