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 D
Explanation
Choice A rationale
Wearing gloves to dispose of the needle and syringe is a good practice to prevent needlestick injuries and contamination. However, it does not directly indicate an understanding of standard precautions, which emphasize hand hygiene as a primary measure.
Choice B rationale
Removing the needle before discarding used syringes is not recommended as it increases the risk of needlestick injuries. Standard precautions emphasize the safe disposal of sharps in puncture-resistant containers without manipulating the needle.
Choice C rationale
Donning a face mask before administering medication is not a standard precaution for handling syringes and needles. Standard precautions focus more on hand hygiene and the use of gloves when there is a risk of exposure to blood or body fluids.
Choice D rationale
Washing hands before handling the needle and syringe is a fundamental aspect of standard precautions. Hand hygiene is the most effective way to prevent the transmission of infections and is a clear indication of understanding standard precautions.
Correct Answer is B
Explanation
Choice A rationale
Whether the popsicles contain pulp or fruit is not relevant to the clear liquid diet, which focuses on the clarity and digestibility of the liquids.
Choice B rationale
The color and flavor of gelatin used are important because certain colors, especially red or purple, can interfere with medical tests and are often avoided in clear liquid diets.
Choice C rationale
If the popsicles are completely frozen is not relevant to the dietary restrictions. The focus should be on the ingredients and their suitability for a clear liquid diet.
Choice D rationale
The number of popsicles available does not impact their suitability for the child’s diet. The nurse should focus on the content and appropriateness of the popsicles.