What should you do if a patient with a puncture wound begins to show signs of shock?

When a patient with a puncture wound begins to show signs of shock, the appropriate response involves laying the patient flat and elevating their legs. This position helps to improve blood flow to vital organs by promoting venous return. Elevating the legs can counteract the effects of shock by assisting the heart in circulating blood more effectively, which is crucial when the body is experiencing decreased perfusion.

In cases of shock, it is vital to maintain the patient's comfort and avoid any actions that could worsen their condition. Other measures such as keeping the patient warm and monitoring vital signs are important, but laying flat and elevating the legs is a fundamental step in providing immediate care. The other options provided, such as using an AED, applying a cold pack, or offering fluids to drink, do not appropriately address the condition of shock and may pose risks to the patient’s safety or exacerbate their state.