Anthony, a 22-year-old Jehovah’s Witness, is admitted to the…

Anthony, a 22-year-old Jehovah’s Witness, is admitted to the intensive care unit for gastrointestinal bleeding.  His blood pressure is 80/60 mm Hg, and in the past 4 hours, his hematocrit has fallen from 38% to 21%.  The medical resident implores Anthony to accept life-saving transfusions, but he refuses, saying that his religion teaches him that death is preferable to receiving blood products.  When his blood pressure reaches 60/20 mmHg, the desperate resident decides to give the blood while Anthony is unconscious.  What is the main bioethical principle that is violated by giving Anthony blood?