Scuba Diving International (SDI) Computer Nitrox Practice Exam

What is the recommended first aid for decompression sickness?

1. Giving them cold water to drink

2. Controlling their temperature and administering pure oxygen

3. Massaging the affected areas

4. Giving them aspirin for pain relief

The correct answer is: Controlling their temperature and administering pure oxygen

The recommended first aid for decompression sickness emphasizes controlling the patient's body temperature and administering pure oxygen as quickly as possible. This approach is critical because decompression sickness, also known as "the bends," occurs when nitrogen bubbles form in the tissues and bloodstream during or after a dive due to rapid changes in pressure. Administering pure oxygen helps reduce the size of the nitrogen bubbles and enhances the elimination of nitrogen from the body. Controlling the patient's temperature is equally important, as maintaining a stable and normal body temperature can prevent further complications and help improve the effectiveness of oxygen therapy. Both of these actions are vital in the initial management of decompression sickness before professional medical help can be obtained. Considering the other options, providing cold water to drink could lead to hypothermia and is not beneficial in treating decompression sickness. Massaging the affected areas may risk causing more harm as it could potentially dislodge the bubbles or worsen the condition. Giving aspirin is not advisable as it does not address the underlying issue of nitrogen bubbles and could lead to unnecessary side effects. Overall, administering pure oxygen and controlling temperature are the most effective initial responses and are critical for the patient’s recovery.