A nurse is caring for a school-age child who has a new prescription for continuous pulse oximetry monitoring. Which of the following actions should the nurse take?
Warm the skin prior to probe placement.
Reposition the probe every 2 hr.
Tape the wire to the palm of the hand.
Apply the sensor to the index fingernail.
The Correct Answer is B
Answer: B. Reposition the probe every 2 hours.
Rationale:
- A. Warm the skin prior to probe placement: While cold fingers can lead to inaccurate readings, warming the skin is not an essential step and is not routinely recommended in clinical practice.
- B. Reposition the probe every 2 hours: This is correct. Continuous pressure from the probe in one spot can cause skin breakdown and pressure injuries. Repositioning the probe every 2 hours helps to prevent this and ensure accurate readings.
- C. Tape the wire to the palm of the hand: This is incorrect. The pulse oximeter probe should be placed on a vascular site, such as a fingertip or earlobe. Taping the wire to the palm would not provide accurate readings.
- D. Apply the sensor to the index fingernail: This is incorrect. The fingernail does not have sufficient blood flow for accurate pulse oximetry readings. The probe should be placed on the fleshy pad of the fingertip.
Therefore, the most important action for the nurse to take is to reposition the probe every 2 hours to prevent skin breakdown and ensure accurate readings.
Additional Points:
- The nurse should also choose a clean and dry site for probe placement.
- The probe should be snug but not too tight.
- The nurse should monitor the child for signs of skin breakdown, such as redness, swelling, or pain.
- If the child is restless or active, the nurse may need to secure the probe with additional tape or a special wrap.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale:
Hct 45% (Choice A) refers to the hematocrit level, which measures the proportion of blood volume occupied by red blood cells. While dehydration can lead to elevated hematocrit due to hemoconcentration, a hematocrit value of 45% is within the normal range for both males and females. Dehydration might cause a mild increase, but more significant elevations would be expected in cases of severe dehydration.
Choice B rationale:
Urine specific gravity 1.035 (Choice B) is an indicator of concentrated urine, which is a characteristic finding in dehydration. Dehydration reduces the body's water content, leading to more concentrated urine with higher specific gravity values. A normal range for urine-specific gravity is typically between 1.005 and 1.030.
Choice C rationale:
Capillary refill of less than 2 seconds (Choice C) is not a finding consistent with dehydration. Capillary refill time measures the time it takes for color to return to the nailbed after pressure is applied. Prolonged capillary refill time might indicate poor peripheral perfusion, which can be a sign of dehydration, but a refill time of less than 2 seconds is considered within the normal range.
Choice D rationale:
A urine output of 35 ml/hr (Choice D) is not indicative of dehydration. In fact, a urine output of 35 ml/hr is relatively normal and suggests adequate fluid intake and hydration. Dehydration would typically result in reduced urine output as the body conserves water.
Correct Answer is C
Explanation
Choice A rationale:
Decreased white blood cells (WBCs) in cerebrospinal fluid (CSF) would not support the diagnosis of bacterial meningitis. In bacterial meningitis, the presence of bacteria triggers an inflammatory response, leading to an increase in WBCs in the CSF (pleocytosis).
Choice B rationale:
Elevated glucose levels in CSF would actually be more consistent with viral rather than bacterial meningitis. In bacterial meningitis, glucose levels are typically decreased due to the high metabolic demands of bacteria on the glucose present in the CSF.
Choice C rationale:
Elevated total protein in cerebrospinal fluid (CSF) is indicative of inflammation and disruption of the blood-brain barrier. Bacterial meningitis causes an intense inflammatory response, leading to an increase in total protein in the CSF.
Choice D rationale:
Decreased pressure in the CSF would not be a characteristic finding in bacterial meningitis. In fact, bacterial meningitis often leads to an increase in CSF pressure due to the inflammation and accumulation of inflammatory cells and proteins.
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