Which of the Following Would Most Likely Create a History

question 5

Multiple Choice

Which of the following would most likely create a history threat?

• A) The weather changes between the time of the pretest date and the posttest date.
• B) A person grows older between the time of the pretest date and the posttest date.
• C) One of the test administrators dies between the time of the pretest date and the posttest date so the posttest is given by someone different than the pretest.
• D) Research subjects learn that they are all being evicted from their homes between the time of the pretest date and the posttest date.

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Definitions:

Pulse Oximetry

A noninvasive method used to measure the oxygen saturation level of the blood.

Suctioning

The process of removing obstructions, such as mucus or secretions, from the airway by negative pressure.

Oxygen Saturation

The measurement of the percentage of oxygen bound to hemoglobin in the blood, indicating the efficiency of oxygen transport.

Afterload

Resistance to left ventricular ejection; the work the heart must overcome to fully eject blood from the left ventricle.