The nurse attaches a pulse oximeter to a client’s finger and obtains an oxygen saturation reading of 91%. Which assessment finding most likely contributes to this reading?
Capillary refill time is 2 seconds.
2+ edema of fingers and hands.
Radial pulse volume is 3+.
Blood pressure is 142/88 mm Hg.
The Correct Answer is B
Choice A rationale
Capillary refill time is 2 seconds. A capillary refill time of 2 seconds is within normal limits and is unlikely to affect the accuracy of the pulse oximetry reading.
Choice B rationale
2+ edema of fingers and hands. Edema can interfere with the accuracy of pulse oximetry readings by affecting the perfusion of the area where the sensor is placed. This can lead to falsely low oxygen saturation readings.
Choice C rationale
Radial pulse volume is 3+. A strong radial pulse indicates good peripheral perfusion, which should not negatively impact the accuracy of the pulse oximetry reading.
Choice D rationale
Blood pressure is 142/88 mm Hg. While elevated blood pressure can have various effects on the body, it is not likely to directly affect the accuracy of a pulse oximetry reading.
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Correct Answer is D
Explanation
Choice A rationale
Providing a back rub at bedtime can help promote relaxation and improve sleep quality. However, it does not directly address the issue of wandering, which poses a safety risk for the client. The primary concern should be ensuring the client’s safety by preventing wandering.
Choice B rationale
Applying wrist restraints to prevent wandering is not an appropriate first intervention. Restraints should be used as a last resort when other measures have failed, and they can cause physical and psychological harm to the client. The focus should be on non-restrictive interventions to ensure safety.
Choice C rationale
Administering a PRN sedative prescription may help the client sleep, but it should not be the first intervention. Sedatives can have side effects and may not address the underlying cause of the client’s wandering. Non-pharmacological interventions should be tried first.
Choice D rationale
Leaving the door to the client’s room open slightly allows the client to see and hear staff members as they pass by, which can help reduce feelings of isolation and anxiety. This intervention addresses both the client’s sleep issues and wandering behavior by providing a sense of security and supervision.
Correct Answer is C
Explanation
Choice A rationale
Eschar and slough are indicative of necrotic tissue and are not signs of proper healing. Eschar is a dry, dark scab or falling away of dead skin, typically caused by a burn, or by the bite of a mite or other insect. Slough is a layer or mass of dead tissue separated from surrounding living tissue, as in a wound, sore, or inflammation. Both eschar and slough need to be removed for proper wound healing to occur.
Choice B rationale
Erythema and serosanguineous exudate can be present in the early stages of wound healing, but one week post-surgery, these signs may indicate inflammation or infection rather than proper healing. Erythema is redness of the skin caused by increased blood flow to the capillaries, often a sign of infection or irritation. Serosanguineous exudate is a thin, watery fluid that is slightly pink due to the presence of small amounts of blood, which can be normal immediately after surgery but should decrease over time.
Choice C rationale
A well-approximated incision site is a sign of proper healing. This means that the edges of the wound are close together and aligned, which promotes faster and more efficient healing. Proper approximation of the wound edges reduces the risk of infection and promotes the formation of a strong, healthy scar.
Choice D rationale
Beefy red granulation tissue is a sign of healing in open wounds, not in surgical incisions that are closed. Granulation tissue is new connective tissue and microscopic blood vessels that form on the surfaces of a wound during the healing process. It is typically bright red or pink and indicates that the wound is healing from the inside out. However, in a surgical incision that is healing properly, the wound edges should be well approximated, and granulation tissue should not be visible.