The right of competent people to determine what happens to their bodies is one example of the principle of:

Endotracheal tube suctioning should be preceded by:

a. pulse oximetry. b. instillation of 15 mL of sterile saline solu-tion. c. preoxygenation for 30 seconds. d. hyperinflation for 60 seconds.

Electrical currents are created when two different metals come in contact, creating what is known as ____________

a. flow b. microleakage c. galvanism d. none of the above