Recognising that the tachycardia may indicate haemorrhage and hypovolaemia you ask Julian to insert an intravenous cannula while you check for other indicators of haemorrhage.

The wound on the kid's leg is not bleeding and there are no other signs of external haemorrhage. The chest signs are unchanged and you don't think there's a significant haemothorax in there. The abdomen is not distended though there is that bruising over the lower left chest. You'll need to wait for an X-ray to assess the pelvis.

Julian amazingly complies without any smart comments and manages to insert a cannula into the boy's forearm. 'Crystalloid right doc? How much do you want?'