When Luka is at the head of the gurney in the trauma room, the girl on the table has an oxygen mask on and tape on her head. When they show the same girl from behind her head, she is no longer wearing the oxygen mask or tape.
When Luka runs up the stairs he is wearing the same latex surgical gloves he wore in the trauma room. This is never done because of the risk of cross contamination. Nobody ever is allowed to wear gloves in the hall per federal health regulations. All doctors are to remove gloves and gowns prior to walking in the halls of any medical facility to prevent the spread of possible communicable diseases.