Which device is used to restrict blood flow to a limb?

• A. Tourniquet
• B. Touch
• C. Telegraphing
• D. Trigger control

Answer: (A)

A tourniquet is the device used to restrict blood flow to a limb. It works by wrapping around an arm or leg and tightening enough to compress the underlying arteries, stopping arterial inflow and helping control severe bleeding when direct pressure isn’t enough. It’s placed above the injury (proximal to the wound) and kept in place until medical care can take over. This makes it distinct from other terms listed, which aren’t devices designed to control limb blood flow—touch is a sensation or action, telegraphing is signaling, and trigger control relates to mechanisms in firearms, not medical hemorrhage control.