(AP) — A federal judge has temporarily allowed a dying 10-year-old girl to move up the adult waiting list for a lung transplant, though an expert has questioned the decision on medical and ethical grounds.

U.S. District Judge Michael Baylson Wednesday suspended an age factor in the nation’s transplant rules for 10 days for Sarah Murnaghan, who is hospitalized with end-stage cystic fibrosis.

Organ transplant rules that say children under age 12 must wait for pediatric lungs to become available, or wait at the end of the adult list, which includes adults who aren’t as critically ill.

New York University bioethicist Dr. Arthur Caplan says lung transplants are the most difficult of organ transplants, and children fare worse than adults, which is one reason for the existing policy. He says it’s troubling for a judge to overrule this medical judgment.