Final answer:
After hearing the rush of air during a needle decompression, a one-way valve should be placed over the catheter to prevent complications.
Step-by-step explanation:
After you hear the rush of air during a needle decompression, you should place a one-way valve over the catheter. This valve allows air to exit the chest cavity but prevents air from reentering. It helps maintain lung function and prevents a tension pneumothorax, a life-threatening condition.