The condition of Immersion Pulmonary Oedema usually occurs in older divers and appears to be associated with heart conditions, cold water, breathing from a regulator, taking beta blocker medications and possibly aspiration of sea water.

Signs & Symptoms of Immersion Pulmonary Oedema:
• Shallow, rapid breathing
• Shortness of breath
• Coughing, sometimes with bloody sputum
• Unconsciousness, no breathing

First Aid Treatment for Immersion Pulmonary Oedema:
• Check the consciousness, airway and breathing and begin resuscitation if necessary
• Administer oxygen as soon as possible (preferably constant flow)
• Seek diving medical advice & call an ambulance if necessary