A client with chronic peripheral arterial disease (PAD) asks the nurse why this disease developed. Which explanation by the nurse is most accurate?
"Excess sodium from hypertension causes direct injury to the arteries, reducing blood flow and causing obstruction."
"Excess fats in your diet are stored in the lining of the arteries, causing them to constrict."
"A combination of platelets and fats accumulate, narrowing the artery and reducing blood flow to the extremities."
"Injury to the arteries causes them to spasm, reducing blood flow to the extremities."
The Correct Answer is C
Choice A Reason
While hypertension can contribute to the development of PAD, it does not directly cause fats to deposit in the arteries. Hypertension can damage the arterial walls, making them more susceptible to atherosclerosis, but it is not the primary mechanism of PAD development.
Choice B Reason
Excess fats in the diet can contribute to atherosclerosis, which is the accumulation of plaques in the arterial walls. However, the fats do not simply get stored; they combine with other substances, including calcium and inflammatory cells, to form plaques that can restrict blood flow.
Choice C Reason
This statement is the most accurate. PAD is primarily caused by atherosclerosis, which is the buildup of plaques formed by fats, cholesterol, calcium, and other substances in the blood. These plaques can harden and narrow the arteries, leading to reduced blood flow to the extremities. The process can be exacerbated by factors such as smoking, diabetes, and high cholesterol.
Arterial spasms can occur, but they are not the typical cause of chronic PAD. Spasms are more often associated with conditions like Raynaud's phenomenon or can be a response to stress or cold temperatures. PAD is usually a result of progressive atherosclerosis rather than intermittent spasms.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A Reason:
Using accessory muscles while breathing is a sign of respiratory distress and indicates that the client is working harder to breathe. This is not a desired outcome of treatment and suggests that the asthma exacerbation is not under control.
Choice B Reason:
The ability to answer questions in full sentences suggests that the client's airway is not severely obstructed, which is a positive sign of effective asthma treatment. When asthma is well-controlled, individuals should not experience significant shortness of breath that limits their ability to speak.
Choice C Reason:
Diminished breath sounds can be a sign of severe airway obstruction and are not indicative of effective asthma treatment. Ideally, lung auscultation should reveal clear breath sounds without wheezing, indicating good air movement throughout the lungs.
Choice D Reason:
Restlessness and anxiety can be symptoms of hypoxia, a condition where the body or a region of the body is deprived of adequate oxygen supply. This is not a sign of effective asthma treatment and may indicate that the client's asthma is not well-managed.
Correct Answer is C
Explanation
Choice a reason:
Placing the client on 2L via nasal cannula is a common intervention for hypoxemia, but with the client's pulse oximetry at 88%, which is below the normal range of 95-100%, and the presence of tachypnea, a more immediate assessment of the client's respiratory status is warranted. Oxygen therapy should be guided by the results of arterial blood gas (ABG) analysis to tailor the treatment to the client's specific needs.
Choice b reason:
Obtaining a blood glucose level is not the most immediate concern in the context of altered mental status and respiratory distress. While it is important to rule out hypoglycemia as a cause of altered mental status, the primary concern indicated by the vital signs is the client's respiratory condition.
Choice c reason:
Calling the physician for an order for a stat arterial blood gas is the most appropriate action. The ABG will provide detailed information about the client's oxygenation, carbon dioxide levels, and acid-base balance. This is crucial for a client with a new onset change in mental status and tachypnea, as it can indicate respiratory failure or other serious complications of pneumonia.
Choice d reason:
Requesting an order for lorazepam is not appropriate given the client's current respiratory status. Lorazepam, a benzodiazepine, can depress the central nervous system and respiratory drive, potentially worsening the client's hypoxemia and respiratory effort.
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