Wireless Handheld Computers Used to Scan a Bar Code on the Patient's

question 15

Multiple Choice

Wireless handheld computers used to scan a bar code on the patient's identification band reduce preexamination variables in the routine venipuncture process because:

• A) patient identification can be verified by scanning requisitions before leaving the laboratory for the inpatient units.
• B) labels for all patient collection tubes may be printed in batches ahead of each collection on the patient floors, thus freeing up laboratory printers for other tasks.
• C) labels for a specific patient are generated only after the patient's identification has been correctly verified by scanning his or her identification band and not printed ahead of time.
• D) the bar code on the patient's driver's license may be scanned for outpatients instead of scanning a wrist band.

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Definitions:

Sensitivity

The capacity to perceive, feel, or be aware of stimuli or changes in the environment; can also refer to the degree of responsiveness to social or emotional matters.

Weber Fraction

A principle that quantifies the perception of change in a given stimulus, stating that the just noticeable difference is a constant proportion of the original stimulus’s intensity.

Difference Threshold

The smallest amount that a given stimulus must be increased or decreased so that an individual can detect the difference.

Standard Stimulus

A specific stimulus used as a reference point in psychological experiments to measure reactions or perceptions.