Under the PA filial responsibility statute, adult children are financially responsible for payment of their parents' medical care and nursing home costs. This was recently decided in the case of Health Care and Retirement Corporation v. Pittas, a 2012 PA Superior Court case. See 23 Pa.C.S. § 4603.
However, there is a bill currently pending before the PA House Judiciary Committee which is looking to eliminate a child's responsibility. See House Bill 242 of 2015.