The use of a single positive electrode, using Wilson's central terminal, created the ____ lead.

Once the patient's heart rate reaches 100, an alert is sent to the attending physician. This is an example of the impending use of ________ in mobile health.

A. smartphone applications B. panic buttons C. threshold levels D. none of these

Medical devices that monitor activity and general fitness, such as "Fitness Buddy," are generally utilized under the direction and supervision of the:

A. physician. B. nursing staff. C. patient. D. physical therapist.