What should be applied to a sucking chest wound?

A sucking chest wound, often resulting from a penetrating injury to the chest, creates a situation where air can enter the pleural cavity, leading to potential respiratory distress and a collapsed lung. An occlusive dressing is the correct choice for managing this type of wound because it effectively seals the wound from outside air.

When applied, an occlusive dressing prevents air from being drawn into the chest cavity during inhalation. This helps restore normal pressure within the pleural space and allows the lung to re-expand, which is critical for the patient's breathing and overall stability. The dressing used should be airtight, which is why materials like plastic wrap or specially designed occlusive dressings are often utilized in these situations.

In contrast, a standard bandage would not provide the necessary seal to prevent air from entering, and a pressure bandage may not adequately close the wound in a way that eliminates airflow. A tourniquet is primarily used for controlling severe bleeding, typically from limb injuries, and is not suitable for managing chest wounds. Thus, an occlusive dressing is the most effective choice for treating a sucking chest wound.