A nurse is caring for a client who has a pulmonary embolism. The nurse should identify that the release of inflammatory mediators leads to which of the following pathologic findings?
Decreased pulmonary vascular resistance
Hypercapnia
Hypoventilation
Respiratory alkalosis
The Correct Answer is D
Correct answer: D
Choice A Reason:
Decreased pulmonary vascular resistance is incorrect. Inflammatory mediators released in response to a pulmonary embolism can lead to vasoconstriction and increased pulmonary vascular resistance. This is part of the body's response to redirect blood flow away from the affected area of the lung and maintain adequate perfusion to other areas.
Choice B Reason:
Hypercapnia is incorrect. Hypercapnia refers to elevated levels of carbon dioxide (CO2) in the blood. Hypocapnia usually is present with embolism; hypercapnia, on the other hand, is rare.
Choice C Reason:
Hypoventilation is incorrect. Hypoventilation occurs when there is inadequate ventilation of the lungs relative to metabolic demands. In the context of a pulmonary embolism, hypoventilation can occur due to factors such as pain, respiratory muscle fatigue, or impaired gas exchange, all of which can be influenced by the release of inflammatory mediators.
Choice D Reason:
Respiratory alkalosis is correct. In response to the blockage and the resulting inflammation, the body often increases the respiratory rate as a compensatory mechanism to maintain adequate oxygen levels and remove carbon dioxide. Due to the increased breathing rate, there is excessive exhalation of carbon dioxide, leading to a decrease in the partial pressure of CO2 in the blood. This results in an increase in blood pH, causing respiratory alkalosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","C","D"]
Explanation
Choice A Reason:
Chronic cough is correct. Persistent cough is a common symptom of COPD, often occurring due to irritation and inflammation in the airways.
Choice B Reason:
Sputum production is correct. COPD patients frequently experience increased mucus production, leading to coughing up phlegm or sputum, especially in the morning.
Choice C Reason:
Dyspnea is correct. Shortness of breath or dyspnea is a hallmark symptom of COPD, particularly during physical activity or exertion, and it tends to worsen as the disease progresses.
Choice D Reason:
Wheezing occurs due to narrowed airways and increased airway resistance. It is more noticeable during expiration but can also be present during inspiration in severe cases.
Choice E Reason:
Chest tightness is incorrect. While chest tightness can occur in COPD, it is typically more associated with asthma. However, some individuals with COPD may experience chest tightness, especially during exacerbations or when airflow is significantly limited.
Correct Answer is D
Explanation
Choice A Reason:
Osteoporosis is inappropriate. Chronic respiratory acidosis can lead to osteoporosis over time due to several factors, including chronic hypoxemia, which can affect bone metabolism and lead to bone loss.
Choice B Reason:
Polyuria is inappropriate. Polyuria, or increased urination, is not typically associated with chronic respiratory acidosis. In fact, respiratory acidosis tends to cause retention of bicarbonate ions, which can lead to compensatory metabolic alkalosis and decreased urine output.
Choice C Reason:
Anxiety and depression is inappropriate. Chronic respiratory acidosis can lead to symptoms such as lethargy, confusion, and decreased mental acuity due to the effects of elevated CO2 levels on the central nervous system. While anxiety and depression are not direct consequences of chronic respiratory acidosis, individuals with COPD may experience anxiety and depression as a result of their chronic respiratory condition.
Choice D Reason:
Delirium is correct. Delirium, characterized by an acute change in mental status, confusion, and altered consciousness, can occur in severe cases of chronic respiratory acidosis, especially during acute exacerbations. Elevated CO2 levels can affect brain function and lead to symptoms of delirium.
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