What is done to an upper extremity with an Esmarch bandage prior to inflation of the double-cuffed tourniquet used in Bier block anesthesia?

Which of the following ventilators is unaffected by the use of heliox, whatever the FIO2?

a. Dräger E-4 b. Servo 300 c. Hamilton Galileo d. Puritan Bennett 840

In __________, a neutron transforms itself into a combination of a proton and an energetic electron.

a. alpha decay b. beta decay c. gamma decay d. x-ray absorption