PADI Divemaster Certification Practice Exam

What kind of emergency response should be executed for a diver suspected of decompression sickness?

1. Immediate ascent to the surface

2. Administering oxygen and staying still

3. Active exercise to relieve symptoms

4. Encouraging them to drink water

The correct answer is: Administering oxygen and staying still

When dealing with a diver suspected of decompression sickness (DCS), the immediate response is crucial in minimizing the effects and complications of the condition. Administering oxygen helps to counteract the nitrogen bubbles that form in the diver's body due to rapid ascent or too much time spent at depth. Oxygen therapy is a vital part of treatment for DCS as it helps reduce the size of the nitrogen bubbles and promotes their elimination through the lungs. Remaining still is equally important, as movement can exacerbate the condition by increasing the chances of bubble expansion or causing additional damage to tissues. This stillness helps manage the symptoms and allows for the best possible outcome until further medical assistance, such as hyperbaric treatment, can be provided. The other options would not adequately address the situation. Immediate ascent can lead to additional injury and should be avoided. Active exercise can increase the risk of further injury, and encouraging hydration doesn’t directly treat decompression sickness. Thus, administering oxygen and maintaining a calm and still position is the appropriate and effective response in this scenario.