At about 19:06 when doctor Ormerod is examining the young boy, there is a small scar near his left shoulder. Near 20:19 this wound has grown in size, appears to be open with a bloody interior, and there are a number of red marks, like a rash, around the wound and up toward his neck.
Dr Omorod isn't doing proper chest compressions when administering C.P.R. to Jack he is moving his arms but his hands stay still.