What type of pneumatic splint uses air to inflate?

The correct answer is the type of pneumatic splint that uses air to inflate is known as an air splint. These types of splints are made from durable, flexible materials that can be inflated with air, creating a supportive structure around an injured limb. The inflated air gives it stability while immobilizing the area, which is crucial for reducing pain and preventing further injury.

Air splints are particularly useful in first aid scenarios as they are lightweight, easy to apply, and can be quickly adjusted to provide the necessary support. Their inflatable nature allows for compact storage and portability, making them an excellent choice for emergency situations where space and weight are considerations.

In comparison, vacuum splints use air pressure but work by creating a vacuum to secure an injured limb within the splint. Water splints utilize water for support, and marine splints are not commonly used or recognized in standard first aid terminology. This emphasizes the specific characteristics and mechanisms of air splints that make them distinct and effective for immobilizing injuries.