What is the recommended immediate response to suspected decompression sickness?

The recommended immediate response to suspected decompression sickness is to administer oxygen and monitor vital signs. This approach is crucial because decompression sickness, often resulting from a rapid reduction in ambient pressure during diving or ascent, can lead to nitrogen bubbles forming in the body, causing pain and potentially severe physiological damage.

Administering oxygen helps to increase its partial pressure in the bloodstream, promoting the reabsorption of those nitrogen bubbles and reducing symptoms. This is an essential first step prior to seeking further medical intervention. Monitoring vital signs is equally important, as it allows for the assessment of the patient's condition and helps in making timely decisions about subsequent treatment and interventions.

In contrast, options like administering painkillers only do not address the underlying issue of nitrogen bubbles or provide any therapeutic benefit in terms of oxygenation. Providing water and rest, while essential for hydration, does not effectively tackle the physiological problems caused by decompression sickness. Encouraging physical activity can exacerbate the condition by increasing the risk of further bubble formation and worsening symptoms. Thus, the correct response focuses on the urgent need to administer oxygen and keep a close watch on the patient’s vital signs.