A nurse is planning to obtain a client's oxygen saturation. Which of the following might influence the result of this test?
The client is wearing nail polish.
The client has an elevated hemoglobin level.
The client has a fever.
The client is wearing a ring.
The Correct Answer is A
A. Nail polish can interfere with the accuracy of pulse oximetry readings by absorbing or
reflecting light, leading to falsely low oxygen saturation readings. It's essential to remove nail polish or acrylic nails from the finger used for pulse oximetry to obtain accurate results.
B. While an elevated hemoglobin level may affect the oxygen-carrying capacity of the blood, it does not directly influence the accuracy of pulse oximetry readings.
C. Fever may affect oxygen saturation levels indirectly by increasing metabolic demand or
respiratory rate, but it does not directly interfere with the accuracy of pulse oximetry readings.
D. Wearing a ring does not typically interfere with pulse oximetry readings unless the ring is very tight and impairs blood flow to the finger. However, nail polish is a more significant
concern for accurate readings.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Ensure that the stool specimen does not contain urine: Fecal occult blood tests are designed to detect blood in the stool, so it's important to ensure that the specimen
collected is not contaminated with urine, which could yield a false-positive result.
B. Wear sterile gloves when handling the stool specimen: Sterile gloves are not typically required for handling stool specimens for fecal occult blood testing. Standard
precautions, including hand hygiene and wearing non-sterile gloves, are sufficient.
C. Repeat the test three times using the same stool specimen: The test is typically
performed once on a fresh stool specimen, and repeating the test with the same specimen is not recommended.
D. Have the client defecate into a bedpan that contains a small amount of water: Fecal occult blood testing requires a small sample of stool collected from a bowel movement. Using a bedpan with water may dilute the stool and affect the accuracy of the test.
Correct Answer is A
Explanation
A. Chvostek's sign is a clinical sign observed during physical examination that may indicate hypocalcemia. It is elicited by tapping or lightly striking the facial nerve just anterior to
the earlobe, which can cause twitching of the facial muscles, particularly the muscles around the mouth and nose.
B. This image shows winging of the scapula. Winging of the scapula, also known as
scapular winging, is a condition characterized by the abnormal protrusion or prominence of the scapula away from the back wall of the thorax. Normally, the scapula lies flat
against the rib cage, providing stability and support for arm movements.
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