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Excessive blood loss does not just happen when the skin is broken, a bone can be fractured and blood can be lost inside the body. For example, if a thigh bone is broken and the skin is not broken you can lose half to one litre of blood. If the skin is broken and there is a bleed this can be increased to one to two litres.

Fractures in the pelvis can cause minor blood loss of about half a litre to major injuries where you can lose all your blood. The main femoral artery runs over the pelvis which is a major artery. 

Injuries to the spleen, liver or chest can cause very minimal blood loss to total blood loss.

The big problem is recognising that severe blood loss is possible or actually happening. It's best to assume the worst and treat as if there is severe blood loss. It is very hard to work out how much blood has been lost with an external bleed and even harder with an internal bleed. It is also difficult to assess blood loss as different people will react in different ways which can cover up signs and symptoms until it gets very serious. 

Things that can affect the way signs and symptoms show are age, size, weight, underlying medical conditions, their fitness and any medications they are taking.

You need to get as much information as possible about the history of what happened and assess the mechanism of the injury.

Things to look out for are: 

  • Pale, cold and sweaty skin
  • Breathing rates of over 20 breaths per minute
  • Thirst
  • The pulse of over 100 beats per minute
  • Altered mental state
  • Anxious, confused, drowsy, restless
  • Unconsciousness

The treatment is to:

  • First, activate the emergency services, treat external bleeding and try to identify if there is internal bleeding
  • Lay them down and raise their legs if possible 
  • Keep the warm and monitor their consciousness and vital signs

  • IPOSi Unit three LO3.1, 3.2, 3.3 & 3.4