A client who is experiencing respiratory distress is admitted with respiratory acidosis.
Which pathophysiological process supports the client's respiratory acidosis?
Carbon dioxide is converted in the kidneys for elimination.
Hyperventilation is eliminating carbon dioxide rapidly.
High levels of carbon dioxide have accumulated in the blood.
Blood oxygen levels are stimulating the respiratory rate.
The Correct Answer is C
Choice A rationale:
Incorrect. The kidneys do play a role in acid-base balance, but they primarily eliminate acids other than carbon dioxide. They do not significantly convert carbon dioxide for elimination.
Elaboration: While the kidneys help regulate acid-base balance through reabsorption and excretion of bicarbonate and hydrogen ions, their role in carbon dioxide elimination is minimal. They primarily excrete acids like uric acid, phosphoric acid, and lactic acid.
Choice B rationale:
Incorrect. Hyperventilation would decrease carbon dioxide levels, not contribute to respiratory acidosis. Respiratory acidosis is characterized by elevated carbon dioxide levels.
Elaboration: Hyperventilation leads to rapid and excessive breathing, causing a decrease in carbon dioxide levels in the blood. This can result in respiratory alkalosis, not respiratory acidosis.
Choice C rationale:
Correct. Respiratory acidosis is caused by the accumulation of carbon dioxide in the blood. This can happen due to impaired ventilation, such as in conditions like chronic obstructive pulmonary disease (COPD), pneumonia, or respiratory failure.
Elaboration: Carbon dioxide is produced as a byproduct of cellular metabolism. It is normally removed from the body through exhalation. When ventilation is impaired, carbon dioxide cannot be efficiently eliminated, leading to its buildup in the blood. This excess carbon dioxide reacts with water to form carbonic acid, lowering blood pH and causing respiratory acidosis.
Choice D rationale:
Incorrect. Low blood oxygen levels (hypoxemia) can stimulate the respiratory rate, but this would not directly cause respiratory acidosis. It might lead to hyperventilation, which could potentially cause respiratory alkalosis.
Elaboration: The body's respiratory center in the brainstem regulates breathing based on blood oxygen and carbon dioxide levels. Hypoxemia triggers a compensatory increase in respiratory rate to enhance oxygen intake. However, this response does not directly contribute to respiratory acidosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Drinking plenty of water whenever thirsty is not the most appropriate action for a patient with hypernatremia. While it's important to stay hydrated, excessive water intake can potentially worsen hypernatremia by diluting blood sodium levels further. This is because the body tries to balance sodium levels by either retaining water or excreting it through urine. In hypernatremia, the body is already short on water relative to sodium, so consuming too much water can exacerbate the imbalance.
Choice B rationale:
Reviewing food labels for sodium content is crucial for managing hypernatremia. It empowers patients to make informed choices and limit their sodium intake.
Sodium is a major contributor to hypernatremia, and reducing dietary sodium intake is a key strategy to lower blood sodium levels.
By carefully reading food labels and selecting low-sodium options, patients can effectively manage their sodium intake and promote a gradual return to normal sodium levels.
This approach addresses the root cause of hypernatremia and promotes long-term control of blood sodium levels.
Choice C rationale:
Monitoring daily urine output volume can be helpful in tracking fluid status, but it's not the primary action for managing hypernatremia.
While urine output can provide insights into fluid balance, it doesn't directly address the underlying issue of excessive sodium. Focusing on dietary sodium intake is a more direct and effective approach to correcting hypernatremia.
Choice D rationale:
Using salt tablets after strenuous exercise is not recommended for patients with hypernatremia.
Salt tablets are intended to replenish electrolytes lost through sweating, but they can worsen hypernatremia by further increasing sodium levels.
Patients with hypernatremia should focus on reducing sodium intake, not increasing it.
Correct Answer is A
Explanation
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.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.
