Which patient problem is a significant risk factor for the development of delirium in the intensive care unit (ICU)?
Type 2 diabetes mellitus
Alcohol abuse
Anxiety
Impaired communication
The Correct Answer is B
Choice A reason: Type 2 diabetes mellitus, while a serious chronic condition, does not directly predispose patients to delirium. Diabetes primarily impacts the body's ability to regulate blood glucose levels, leading to complications such as cardiovascular disease, neuropathy, and nephropathy. However, it is not directly linked to the acute cognitive disturbances seen in delirium unless it leads to severe metabolic derangements, which is less common.
Choice B reason: Alcohol abuse is a significant risk factor for the development of delirium, especially in ICU patients. Chronic alcohol use can lead to a condition known as delirium tremens (DTs) during withdrawal, characterized by severe agitation, confusion, hallucinations, and autonomic hyperactivity. Patients with a history of alcohol abuse may have altered brain chemistry and neurotransmitter imbalances that predispose them to delirium when stressed by illness or surgery. Moreover, alcohol abuse can lead to liver dysfunction, nutritional deficiencies (particularly thiamine), and other systemic issues that further exacerbate the risk.
Choice C reason: Anxiety can exacerbate stress and discomfort in a patient but is not a primary causative factor for delirium. Anxiety may contribute to an increased sense of fear or confusion, especially in an ICU setting. However, it does not cause the profound disruption in cognitive function, attention, and awareness that characterizes delirium.
Choice D reason: Impaired communication might be a consequence or symptom seen in patients with delirium, but it is not a root cause. Patients with pre-existing communication difficulties might struggle more to express symptoms or needs, which could complicate care, but it does not inherently lead to the onset of delirium. Effective communication strategies and aids can help manage these challenges but do not address the underlying neurological changes seen in delirium.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: Weight gain is not commonly associated with Parkinson's disease. In fact, patients with PD often experience weight loss due to increased energy expenditure from tremors and muscle rigidity, as well as difficulties with eating.
Choice B reason: Cardiovascular problems are not directly caused by Parkinson's disease. While PD patients may have cardiovascular issues, these are typically related to age or other comorbid conditions rather than PD itself.
Choice C reason: Swallowing challenges, or dysphagia, are a significant concern for patients with Parkinson's disease. The motor symptoms of PD, including muscle rigidity and bradykinesia, can affect the muscles involved in swallowing, leading to difficulty eating and an increased risk of aspiration and choking. Addressing swallowing challenges is crucial for maintaining nutrition and preventing respiratory complications.
Choice D reason: Obesity is not a typical issue for patients with Parkinson's disease. As mentioned earlier, weight loss is more common due to the disease's impact on motor function and the effort required for daily activities.
Correct Answer is C
Explanation
Choice A reason: While blood glucose monitoring is essential for patients receiving TPN, it is not specifically necessary to obtain samples from a central line. Blood glucose levels can be monitored through peripheral blood samples.
Choice B reason: There is actually an increased risk of infection with central lines compared to peripheral lines due to the invasive nature of central line placement and its location. Proper aseptic technique is critical to minimize this risk.
Choice C reason: The hypertonic solution will be more rapidly diluted when given through a central line. This is a critical point because the central veins have a higher blood flow and larger volume, which helps to quickly dilute the hypertonic TPN solution. This reduces the risk of phlebitis and damage to the smaller peripheral veins, making central lines more suitable for infusing highly concentrated solutions like 25% dextrose.
Choice D reason: While a central line can allow for the rapid administration of infusions, this is not the primary reason for its use with TPN. The key factor is the dilution of the hypertonic solution, as central lines handle high osmolarity solutions better than peripheral veins.
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