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
To explain why, we need to use the formula for calculating the drip rate in drops per minute (dpm):
Volume of IV fluid (mL) x Drop Factor (drops/mL) / Time to run (h) x 60 (min/h) = Drip Rate (dpm)
In this question, the volume of IV fluid is one liter, which is equivalent to 1000 mL. The drop factor is 15 drops per mL, as given by the tubing.
The time to run is six hours, as ordered by the physician. Plugging these values into the formula, we get:
1000 mL x 15 drops/mL / 6 h x 60 min/h = 84 dpm
Therefore, the nurse should regulate the infusion to deliver 84 drops per minute.
Choice A is wrong because it gives a drip rate of 42 drops per minute, which is half of the correct answer.
This would result in delivering only 500 mL of normal saline in six hours, instead of one liter.
Choice C is wrong because it gives a drip rate of 100 drops per minute, which is more than the correct answer.
This would result in delivering 1.43 liters of normal saline in six hours, instead of one liter.
Choice D is wrong because it gives a drip rate of 166 drops per minute, which is almost double the correct answer.
This would result in delivering 1.99 liters of normal saline in six hours, instead of one liter.
Normal saline is a solution of 0.9% sodium chloride in water, which has the same osmolarity as blood plasma.
It is used to treat dehydration, shock, blood loss, and other conditions that require fluid replacement.
The normal range of sodium in blood is 135-145 mEq/L.
Correct Answer is B
Explanation
This is because the nurse’s reply does not address the client’s fear of radiation therapy, but rather provides factual information that may not be relevant or helpful to the client.
The nurse is not using a therapeutic communication technique, such as reflecting, exploring, or validating the client’s feelings.
Instead, the nurse is shutting down the communication and missing an opportunity to learn more about the client’s concerns and needs.
Choice A is wrong because the nurse is not confronting a painful subject, but rather avoiding it.
The nurse is not acknowledging the client’s fear or inviting the client to talk more about it.
Choice C is wrong because the nurse is not recognizing that the client needs information, but rather assuming that the client does.
The nurse is not asking the client what he or she wants to know about radiation therapy, but rather telling the client what he or she should know.
Choice D is wrong because the nurse is not perceiving that the client is ready to hear more about the treatment, but rather imposing information on the client.
The nurse is not assessing the client’s readiness to learn, but rather giving unsolicited advice.
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