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The nurse is caring for a client with emphysema who is mildly dyspneic after ambulation. Which instruction should the nurse provide to the client to improve gas exchange?

Draw air in through the nose and exhale slowly through pursed lips.

Lay down on each side with knees bent and breathe from the abdomen.

Increase breathing rate for a full 30 seconds.

Raise hands above the head to expand the diaphragm.

Answer and Explanation

The Correct Answer is A

Rationale for Choice A:

Pursed-lip breathing:

Creates back pressure in the airways, which helps to keep them open longer during exhalation.

Slows down the breathing rate, allowing for more complete exhalation and better emptying of the lungs. Prevents air trapping, which can worsen shortness of breath.

Promotes relaxation and reduces anxiety, which can also help to improve breathing.

Rationale for Choice B:

Side-lying position with knees bent:

May not be the most effective position for improving gas exchange in a client with emphysema. Could potentially restrict chest expansion and make breathing more difficult.

May not be comfortable for all clients.

Rationale for Choice C:

Increasing breathing rate:

Can lead to hyperventilation, which can worsen shortness of breath and anxiety. Can also cause fatigue and muscle exhaustion.

Rationale for Choice D:

Raising hands above the head:

Does not significantly expand the diaphragm or improve gas exchange. May actually make breathing more difficult for some clients.

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Correct Answer is C

Explanation

Choice A rationale:

Carbon dioxide is primarily eliminated through the lungs, not the kidneys. While the kidneys do play a role in acid-base balance, their primary mechanism for regulating pH is through the excretion or retention of bicarbonate ions (HCO3-), not carbon dioxide itself.

The kidneys' ability to compensate for respiratory acidosis is limited. In cases of severe respiratory acidosis, the kidneys may not be able to adequately compensate, leading to a further decrease in blood pH.

Choice B rationale:

Hyperventilation would actually decrease carbon dioxide levels in the blood, not increase them. Hyperventilation is a state of rapid, deep breathing that leads to increased exhalation of carbon dioxide. This can result in respiratory alkalosis, which is the opposite of respiratory acidosis.

Choice D rationale:

Low blood oxygen levels (hypoxia) can stimulate respiration, but this would not directly cause respiratory acidosis. In fact, hypoxia can sometimes lead to respiratory alkalosis due to hyperventilation.

Respiratory acidosis is primarily caused by impaired carbon dioxide elimination, not decreased oxygen levels.

Choice C rationale:

High levels of carbon dioxide in the blood (hypercapnia) are the hallmark feature of respiratory acidosis. This can occur due to a variety of factors that impair ventilation, such as:

Chronic obstructive pulmonary disease (COPD) Asthma

Pneumonia Sleep apnea

Neuromuscular disorders that affect breathing Drug overdose (e.g., opioids)

The accumulation of carbon dioxide in the blood leads to a decrease in blood pH, which can have a range of negative effects on the body's organ systems.

A. Leave the dressing off until consulting with the healthcare provider. B. Apply a hydrocolloidal gel dressing. C. Increase the frequency of the dressing changes. D. Replace the gauze with a transparent dressing.

Correct Answer is B

Explanation

Choice A rationale:

Leaving the dressing off would expose the wound to air and potential contamination, which could delay healing and increase the risk of infection.

While consulting with the healthcare provider is always an option, it's not necessary in this case as the nurse has the knowledge and skills to select an appropriate dressing.

Additionally, leaving the wound uncovered could cause pain and discomfort to the patient, as well as potentially disrupt the delicate granulation tissue that has already formed.

Choice C rationale:

Increasing the frequency of dressing changes could disrupt the healing process and irritate the wound bed.

It's generally recommended to change dressings only as often as necessary to keep the wound clean and moist. Excessive dressing changes can also be costly and time-consuming for both the patient and the healthcare provider. Choice D rationale:

Transparent dressings are not ideal for stage 3 pressure injuries with significant granulation tissue. These dressings are more suitable for wounds with minimal exudate and that are not actively healing. Transparent dressings can also adhere to the wound bed, causing pain and trauma upon removal.

Choice B rationale:

Hydrocolloidal gel dressings are a good choice for stage 3 pressure injuries with granulation tissue because they: Provide a moist wound environment, which promotes healing.

Absorb exudate, which helps to prevent maceration of the surrounding skin. Form a protective barrier over the wound, which helps to prevent infection.

Are comfortable for the patient and can be left in place for several days.

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The nurse is caring for a client with emphysema who is mildly dyspneic after ambulation. Which instruction should the nurse provide to the client to improve gas exchange?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is C

Explanation

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Correct Answer is B

Explanation

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