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 ["E"]
Explanation
A private room with negative air pressure is required to care for a client with suspected or confirmed tuberculosis (TB) disease, as this is part of the airborne precautions recommended by the CDC.
A private room with negative air pressure prevents the spread of infectious droplet nuclei that contain the TB bacteria.
Choice A is wrong because gloves, masks, and gowns are not sufficient to protect against TB transmission.
Gloves and gowns are used for contact precautions, which are not indicated for TB.
A regular mask is also not effective in filtering out the small droplet nuclei that carry the TB bacteria.
Choice B is wrong because an N95 mask is not a precaution for the client, but for the healthcare personnel who are in close contact with the client.
An N95 mask is a type of respirator that can filter out at least 95% of airborne particles, including TB bacteria. Health care personnel should wear an N95 mask when entering the client’s room or performing aerosol-generating procedures on the client.
Choice C is wrong because droplet precautions are not indicated for TB.
Droplet precautions are used for infections that are spread by large respiratory droplets that do not remain suspended in the air, such as influenza or pertussis. Droplet precautions require wearing a regular mask and eye protection when within 6 feet of the client.
Choice D is wrong because contact precautions are not indicated for TB.
Contact precautions are used for infections that are spread by direct or indirect contact with the client or the client’s environment, such as Clostridium difficile or MRSA. Contact
Correct Answer is C
Explanation
This is because renal calculi can cause renal colic, which is a sudden and intense pain in the flank area that radiates to the groin or testicles.
The pain is caused by the stone obstructing the ureter and triggering spasms.
Choice A is wrong because a feeling of pressure in the bladder is more likely to indicate a lower urinary tract infection or an overactive bladder.
Choice B is wrong because a mild, burning pain when urinating is more likely to indicate a urinary tract infection or a urethral injury.
Choice D is wrong because a constant, dull, aching pain in the right upper quadrant is more likely to indicate a liver or gallbladder problem.
Normal ranges for urine pH are 4.5 to 8.0, and for specific gravity are 1.005 to 1.030.
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