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 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 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 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.
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Correct Answer is B
Explanation
Choice A rationale
Identifying effective pain relief measures is important, but it does not directly assess the quality of the pain. This approach focuses on management rather than understanding the pain’s characteristics.
Choice B rationale
Asking the client to describe the pain is the most direct way to assess its quality. This allows the nurse to gather detailed information about the pain’s nature, intensity, and characteristics, which is crucial for accurate diagnosis and treatment.
Choice C rationale
Providing a numeric pain scale helps quantify the pain’s intensity but does not provide qualitative details about the pain’s nature. It is useful for monitoring pain levels over time but not for initial assessment.
Choice D rationale
Observing body language and movement can give clues about pain but is subjective and less reliable than directly asking the client. It should be used as a supplementary method rather than the primary approach.
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.