Hypovolaemic shock is also sometimes referred to as physiological shock. The condition occurs when the body loses 20% (one fifth) or more of its blood / fluid supply. Left untreated it is a life threatening condition, which will require urgent first aid treatment to counteract its effects.
Causes
Hypovolaemic shock can be caused through any of the below conditions:
Major bleeding (internal & external)
Heat exhaustion / stroke
Severe burns
Severe diarrhea and vomiting (eg food poisoning)
Treatment
If left untreated the condition can rapidly become life threatening. Follow the below protocol when administering first aid to a casualty:
Support the casualty and lie them flat on the ground
Elevate the legs to increase blood supply to the vital organs
Call 999 /112 stating your location and that the casualty has hypovolaemic shock
Keep the casualty warm and loosen any tight clothing
Maintain an open airway and continue to check breathing