The nurse attaches a pulse oximeter to a client’s finger and obtains an oxygen saturation reading of 91%. Which assessment finding most likely contributes to this reading?
Capillary refill time is 2 seconds.
2+ edema of fingers and hands.
Radial pulse volume is 3+.
Blood pressure is 142/88 mm Hg.
The Correct Answer is B
Choice B rationale
2+ edema of fingers and hands. Edema can interfere with the accuracy of pulse oximetry readings by affecting the perfusion of the area where the sensor is placed. This can lead to falsely low oxygen saturation readings.
Choice A rationale
Capillary refill time is 2 seconds. A capillary refill time of 2 seconds is within normal limits and is unlikely to affect the accuracy of the pulse oximetry reading.
Choice C rationale
Radial pulse volume is 3+. A strong radial pulse indicates good peripheral perfusion, which should not negatively impact the accuracy of the pulse oximetry reading.
Choice D rationale
Blood pressure is 142/88 mm Hg. While elevated blood pressure can have various effects on the body, it is not likely to directly affect the accuracy of a pulse oximetry reading.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","E"]
Explanation
Choice A rationale
Drinking a mixture of warm water, whiskey, and honey at bedtime is not recommended as alcohol can disrupt sleep patterns and lead to poor sleep quality.
Choice B rationale
Establishing a regular time for going to bed and getting up helps regulate the body’s internal clock and can improve sleep quality.
Choice C rationale
Asking for a mild sedative should be a last resort and only used under the guidance of a healthcare provider. Non-pharmacological methods are preferred for improving sleep.
Choice D rationale
Taking an afternoon nap can interfere with nighttime sleep and is generally not recommended for those having trouble sleeping at night.
Choice E rationale
Avoiding caffeinated beverages late in the day can help improve sleep quality as caffeine is a stimulant that can interfere with falling asleep.
Correct Answer is A
Explanation
Choice A rationale
Ensuring the bevel of the needle is pointing up is crucial for intradermal injections as it allows the medication to be deposited just below the epidermis, forming a small bleb or wheal.
Choice B rationale
The upper arm is not the preferred site for intradermal injections. The inner forearm and upper back are more commonly used as they allow for better visualization of the reaction.
Choice C rationale
Holding the syringe perpendicular to the skin is incorrect for intradermal injections. The correct angle is 5 to 15 degrees to ensure the medication is deposited in the dermis.
Choice D rationale
Massaging the site gently after injection is not recommended for intradermal injections as it can disperse the medication and affect the test results.
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