What piece of equipment is used for a blood free field?

a. Irrigating pan
b. Pneumatic tourniquet
c. Sticky drape
d. Esmarch

ANS: B
A pneumatic tourniquet is commonly used to provide a bloodless field when doing procedures on the extremities. The tourniquet is inflated after the limb is elevated and exsanguinated with a sterile Esmarch. It is important to exsanguinate all blood from the limb to prevent blood clots.