Sister Margaret McBride was reassigned from her administrative position at St. Joseph´s Hospital and Medical Center, a Catholic hospital in Phoenix.
She was the vice president of mission integration and served on an ethics committee which advised a patient to abort her 11-week fetus late last year.
The patient has a life-threatening condition and would likely have died without the procedure.
The hospital supports Sister McBride, but the local Bishop said that she was automatically excommunicated for the action. Termination of a pregnancy is only acceptable in the eyes of the Catholic Church as a secondary effect of some other treatment.