(West Union, IA) — An Iowa family has sued Gundersen Health System for negligence in a 77-year-old man’s death. David Hackley died in January of last year after the machine supplying him with oxygen was shut down. The family says Hackley had been improving and was about to be transferred to a skilled nursing home for rehabilitation before the supplemental oxygen was removed. He died two days later. Gundersen is being sued for wrongful death.