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 A
Explanation
Choice A Reason:
The client should maintain systolic BP between 120 and 129 mm Hg. This option aligns with current guidelines for blood pressure management following a transient ischemic attack (TIA). Tight blood pressure control is recommended to reduce the risk of recurrent cerebrovascular events, such as stroke. Maintaining systolic blood pressure (SBP) between 120 and 129 mm Hg has been associated with significant risk reduction in stroke recurrence compared to higher blood pressure targets. Therefore, this option reflects the recommended approach for blood pressure management in individuals with a history of TIA.
Choice B Reason:
The client should maintain systolic BP between 136 and 140 mm Hg: This option suggests a systolic blood pressure (SBP) range that is higher than the recommended target for blood pressure management following a TIA. Allowing SBP to remain in the range of 136 to 140 mm Hg may pose an increased risk of recurrent cerebrovascular events compared to tighter blood pressure control.
Choice C Reason:
The client should maintain systolic BP between 141 and 145 mm Hg. Similarly, this option proposes a systolic blood pressure (SBP) range that is higher than the recommended target for blood pressure management following a TIA. Allowing SBP to remain in the range of 141 to 145 mm Hg may not provide adequate protection against stroke recurrence compared to tighter blood pressure control.
Choice D Reason:
The client should maintain systolic BP between 130 and 135 mm Hg. While this option suggests a systolic blood pressure (SBP) range that is closer to the recommended target compared to options B and C, it still falls slightly above the optimal range for blood pressure management following a TIA. Tighter blood pressure control, ideally below 130 mm Hg, is typically preferred to reduce the risk of recurrent cerebrovascular events.
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