A client asks a nurse, “Why do I have to remove my nail polish in order for my pulse oximetry to be monitored?” Which is the best response by the nurse?
“I need to be able to assess the color of your nailbed.”.
“Nail polish can interfere with the transmission of light waves.”.
“The sensor may react with the nail polish causing an allergic reaction.”.
“The chemicals in the nail polish can cause falsely decreased readings of your oxygen level.”.
The Correct Answer is B
Pulse oximetry works by measuring the amount of light that passes through your finger and reaches a sensor on the other side.
The amount of light that is absorbed by your blood depends on how much oxygen it carries. Nail polish can block or reflect some of the light, making it harder for the pulse oximeter to get an accurate reading of your oxygen level.
Choice A is wrong because the color of your nailbed is not relevant for pulse oximetry.
The pulse oximeter does not measure the color of your nailbed, but the amount of light that passes through it.
Choice C is wrong because the sensor does not react with the nail polish causing an allergic reaction.
The sensor is a non-invasive device that does not touch your skin or nail polish directly.
Choice D is wrong because the chemicals in the nail polish do not cause falsely decreased readings of your oxygen level.
The chemicals in the nail polish do not affect the amount of oxygen in your blood, but only the amount of light that reaches the sensor.
Normal ranges for pulse oximetry vary depending on your health condition and altitude, but generally they are between 95% and 100%. If your pulse oximetry reading is lower than 90%, you may have hypoxia, which means your tissues are not getting enough oxygen.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
The client bears weight on both feet when moving the walker ahead and steps with the weaker leg first. This is the proper way to use a walker for ambulation, as it provides stability and reduces stress on the affected joints.
Choice A is wrong because the client should not look down at his feet to prevent falling, but rather look ahead at where he is going. Looking down can cause neck strain and loss of balance.
Choice C is wrong because the client should not place her full weight on the walker with her arms while taking steps, as this can cause upper extremity fatigue and injury. The client should use the walker as a support, not a crutch.
Choice D is wrong because the client should not lean forward at a 60-degree angle while stepping into the walker, as this can cause back pain and poor posture. The client should stand upright and move the walker forward about one step’s length at a time.
Correct Answer is D
Explanation
30 mL. This is because one ounce is equal to 29.57353 milliliters, so one ounce of an elixir medication is approximately 30 milliliters.
The nurse should instruct the client to take 30 milliliters of the medication during discharge teaching.
Choice A is wrong because 5 milliliters is much less than one ounce. Choice B is wrong because 15 milliliters is half of one ounce.
Choice C is wrong because 25 milliliters is slightly less than one ounce.
The nurse should use a conversion factor or a calculator to convert ounces to milliliters accurately.
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