In a microdrip administration set, how many drops usually make up one mL?

What is usually the determining factor for which addresses are sent direct mail advertising?

A. Addresses within driving distance of the practice B. Addresses from random sources of people likely to need medical service C. Addresses recommended by the local hospital D. All addresses listed in the phonebook of the city in which the practice is located

A _______ device is any device used to protect the Emergency Responder from making direct contact with the _______ of the person who needs breathing assistance

Fill in the blank(s) with the appropriate word(s).