The nurse explains to a patient that the pulse oximeter can measure the arterial oxygen by:

measuring the oxygenated hemoglobin through a capillary bed.

assessing the amount of blood passing through the sensor.

assessing the relative warmth of the skin on the monitored part.

measuring the respirations to the blood pressure via infrared rays.

Answer and Explanation

The Correct Answer is A

A.   Pulse oximetry works by using light absorption to measure the oxygen saturation of hemoglobin in the blood, which typically occurs through the capillary bed in areas like the finger or earlobe.
B.   The pulse oximeter does not measure the amount of blood passing through the sensor directly, but rather the oxygen content of the blood.
C.   The pulse oximeter does not assess the warmth of the skin as a mechanism for measuring oxygenation.
D.   Pulse oximeters measure oxygen saturation levels, not the respiratory rate or blood pressure.

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Correct Answer is C

Explanation

A. Waiting 30 minutes is unnecessary unless there is concern about an acute change in the patient's condition.
B. While both readings can be recorded, the difference between arms should be noted, as it can indicate underlying issues such as vascular problems.

C. It is important to retake the blood pressure on both arms to verify accuracy and check for any significant discrepancy.
D. Retaking the pressure on just one arm may miss important information about the other arm's readings.

A. Within the expected reference range B. Elevated blood pressure C. Hypertension stage 1 D. Hypertension stage 2

Correct Answer is B

Explanation

A. A blood pressure of 124/84 mm Hg is slightly elevated and falls into the "elevated blood pressure" category.
B. Elevated blood pressure (120-129 systolic and less than 80 diastolic) is considered a risk factor for developing hypertension.
C. Hypertension stage 1 begins at 130/80 mm Hg, not at 124/84 mm Hg.
D. Hypertension stage 2 requires a reading of 140/90 mm Hg or higher.

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The nurse explains to a patient that the pulse oximeter can measure the arterial oxygen by:

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Naxlex Comprehensive Predictor Exams

If a patient's blood pressure measures 146/92 on the left arm and 138/84 on the right arm, what would you do?

Correct Answer is C

Explanation

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Correct Answer is B

Explanation

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