ON THE MEND

Country music star Johnny Cash was joking with staff at Nashville’s Baptist Hospital and doing well--despite suffering some pulmonary complications after his heart surgery last week, hospital officials said. Spokeswoman Aileen Katcher said doctors would not release more specific information about Cash’s setback over the weekend. “The only thing more I can say is that he had problems with his lungs,” she said Tuesday. Although he’s still in intensive care, Cash is “up and walking around. . . . He’s doing well,” said another hospital spokeswoman, Debbie Koch.