Awesome Oxygen - S5.E4

The doctors reveal why your body can't survive without oxygen for more than three minutes, and they find out what it's like to be 999 call handlers in Operation Takeover. Dr Xand investigates how Formula One race car technology can help hospitals, and Dr Chris hits the wards in Ouch and About On Call. Meanwhile in Accident and Emergency, one patient comes in after a bike accident and another has fallen on her wrist.