Which of the following could the nurse expect to observe in an older adult client who has a pneumothorax?
Higher oxygen saturations of 98% to 99%
Lower oxygen saturations of 93% to 94%
Lower energy expenditure
Increased lung capacity
The Correct Answer is B
Choice A Reason:
Higher oxygen saturations of 98% to 99% is inappropriate. A pneumothorax involves the presence of air in the pleural space, which can compromise lung function and gas exchange. This compromised lung function typically leads to decreased oxygenation of the blood, resulting in lower oxygen saturations rather than higher saturations.
Choice B Reason:
Lower oxygen saturations of 93% to 94% is appropriate. A pneumothorax disrupts the normal exchange of oxygen and carbon dioxide in the lungs due to partial or complete lung collapse. As a result, the affected lung is unable to adequately oxygenate the blood, leading to lower oxygen saturations, which are indicative of hypoxemia.
Choice C Reason:
Lower energy expenditure is inappropriate. Energy expenditure is not typically affected by a pneumothorax. While the discomfort and respiratory distress associated with a pneumothorax may cause the individual to limit physical activity, there is no direct impact on overall energy expenditure.
Choice D Reason:
Increased lung capacity is inappropriate. A pneumothorax results in partial or complete collapse of the affected lung, reducing lung capacity rather than increasing it. The presence of air in the pleural space creates positive pressure, which can compress the lung and decrease its ability to expand fully during inhalation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A Reason:
Vasogenic cerebral edema is appropriate response. Vasogenic cerebral edema occurs due to disruption of the blood-brain barrier (BBB), leading to leakage of fluid and proteins from the blood vessels into the brain parenchyma. This type of cerebral edema is commonly associated with conditions such as brain tumors, abscesses, and ischemic stroke.
Choice B Reason:
Osmotic cerebral edema is inappropriate response. Osmotic cerebral edema occurs when there is an imbalance of osmotic forces across the blood-brain barrier, leading to the movement of water into the brain cells. This type of cerebral edema can result from conditions such as hyponatremia or the administration of hypertonic solutions.
Choice C Reason:
Cellular cerebral edema is inappropriate response. Cellular cerebral edema involves the swelling of brain cells (neurons and glial cells) due to various insults, such as ischemia, hypoxia, or metabolic disturbances. This type of cerebral edema can occur in conditions such as ischemic stroke or traumatic brain injury.
Choice D Reason:
Interstitial cerebral edema is incorrect response. Interstitial cerebral edema involves the accumulation of fluid within the interstitial spaces of the brain tissue. This type of cerebral edema can occur in conditions such as hydrocephalus, where there is obstruction of cerebrospinal fluid (CSF) flow.
Correct Answer is B
Explanation
Choice A Reason:
Flying itself is not typically considered a factor that worsens MS manifestations. However, factors related to flying, such as stress, fatigue, changes in routine, and potential exposure to infections, may contribute to symptom exacerbation in some individuals with MS.
Choice B Reason:
Sunbathing is appropriate. Exposure to excessive heat, such as sunbathing or prolonged exposure to hot weather, can lead to temporary worsening of MS symptoms, a phenomenon known as Uhthoff's phenomenon. Increased body temperature can temporarily impair nerve conduction in individuals with MS, resulting in exacerbation of symptoms such as fatigue, weakness, sensory disturbances, and cognitive impairment.
Choice C Reason:
Working in an office is inappropriate. Working in an office environment is not inherently associated with exacerbation of MS manifestations. However, factors such as stress, fatigue, poor ergonomic conditions, and limited mobility during prolonged periods of sitting may contribute to symptom exacerbation in some individuals with MS.
Choice D Reason:
High altitude travel is inappropriate. High altitude travel can exacerbate MS symptoms due to the decreased oxygen levels and potential changes in barometric pressure at high altitudes. Hypoxia (low oxygen levels) at high altitudes may exacerbate fatigue, weakness, and cognitive impairment in individuals with MS. Changes in barometric pressure can also trigger or worsen symptoms such as headaches, sensory disturbances, and balance problems in some individuals with MS.
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