TOLEDO, Ohio — A nurse accidentally disposed of a kidney from a living donor this month at an Ohio hospital, and doctors tried unsuccessfully for at least two hours to resuscitate the organ in what medical experts describe as a rare accident, health officials said. “Human error rendered the kidney unusable," University of Toledo Medical Center spokesman Toby Klinger said Saturday, but he declined to give more details, citing the hospital's investigation into what happened and its respect for the privacy of the patients involved, huffingtonpost.com reported. —Agencies