When initiating oxygen per mask to a client who is short of breath, the nurse hears a loud hissing sound after inserting the flowmeter into the wall outlet. Which should the nurse do next?
Assess the position of the mask on the client's face.
Release and reinsert the flowmeter in the wall outlet.
Attach the flowmeter to a humidification canister.
Adjust the flow rate to the prescribed liters per minute.
The Correct Answer is B
Choice A reason: Assessing the position of the mask on the client's face is not the priority action. The mask may be well-fitted, but the oxygen delivery may be compromised by the faulty connection of the flowmeter.
Choice B reason: Releasing and reinserting the flowmeter in the wall outlet is the best action as it may correct the problem of the loose or misaligned connection. The nurse should ensure that the flowmeter is securely attached and that the oxygen is flowing properly.
Choice C reason: Attaching the flowmeter to a humidification canister is not necessary for oxygen delivery per mask. Humidification is usually added for high-flow oxygen devices such as nasal cannula or face tent.
Choice D reason: Adjusting the flow rate to the prescribed liters per minute is not the appropriate action. The flow rate may be correct, but the oxygen delivery may be impaired by the hissing sound indicating a leak or obstruction.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: Removing the nasal cannula is not appropriate as it would deprive the client of supplemental oxygen. The client's oxygen saturation is below the normal range of 95% to 100%, indicating hypoxemia.
Choice B reason:While increasing oxygen might seem appropriate, this should only be done after verifying the accuracy of the pulse oximeter reading and assessing the client’s overall condition. Automatically increasing oxygen without further assessment could delay addressing other underlying issues or lead to over-oxygenation in clients with certain conditions like COPD.
Choice C reason:The first step is to ensure the accuracy of the pulse oximeter reading by checking its placement and ruling out factors that can interfere with accurate readings, such as poor circulation, cold extremities, nail polish, or motion artifacts. This ensures that the subsequent intervention is based on reliable data.
Choice D reason: Switching to a non-rebreather mask is not necessary as it would deliver a high concentration of oxygen (up to 100%) that may be excessive for the client. A nasal cannula can deliver oxygen from 1 to 6 L/minute, depending on the client's needs.

Correct Answer is B
Explanation
Choice A reason: Eschar and slough in the wound are not signs of proper healing. They are necrotic tissue that impairs wound healing and increases the risk of infection. They should be removed by debridement to promote wound closure.
Choice B reason: A well-approximated incision site is a sign of proper healing. It means that the edges of the wound are close together and aligned, without gaps or separation. It indicates that the wound is healing by primary intention, which is the fastest and most desirable method of wound healing.
Choice C reason: Beefy red granulation tissue is a sign of healing, but not of proper healing for a surgical incision. It is new tissue that fills the wound bed and consists of blood vessels and connective tissue. It indicates that the wound is healing by secondary intention, which is a slower and less desirable method of wound healing.
Choice D reason: Erythema and serosanguineous exudate are not signs of proper healing. They are signs of inflammation and possible infection. Erythema is redness of the skin around the wound, and serosanguineous exudate is a mixture of blood and serum that drains from the wound. They should be monitored and reported to the health care provider.
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