Rehydrate with electrolyte solution, or best possible alternative, e.g., sports drinks, water, etc.
Keep the patient comfortable
Call the Coastguard, DSC or VHF Channel 16/Dial 999 (24 hrs). Then call the National Diving Accident Helpline on 07831 151 523 (24 hrs)in England and Wales or 0345 408 6008 in Scotland.
Please contact your nearest available BHA member chamber. If you do not know the location of your nearest BHA member chamber then please call the 07831 151 523 (24 hrs)in England and Wales or 0345 408 6008 in Scotland.
If the patient is seriously unwell or deteriorating rapidly, inform the emergency services promptly by dialing 999 on land or VHF Channel 16 if at sea. or proceed to your nearest Accident and Emergency Department.