A student asks the nurse why a peripherally inserted central catheter is needed for a patient receiving Total Parenteral Nutrition (TPN) with 25% dextrose. Which response by the nurse is accurate?

The required blood glucose monitoring is based on samples obtained from a central line.

There is a decreased risk for infection when 25% dextrose is infused through a central line.

The hypertonic solution will be more rapidly diluted when given through a central line.

The prescribed infusion can be given more rapidly when the patient has a central line.

Answer and Explanation

The Correct Answer is C

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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Correct Answer is B

Explanation

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.

A. Kidney failure B. Aspiration pneumonia C. Hypotension D. Heart failure

Correct Answer is B

Explanation

Choice A reason: Kidney failure is not a common immediate complication related to the patient's presentation of sudden right-sided weakness and difficulty speaking, which are indicative of a stroke. Although diabetes and hypertension can eventually lead to kidney issues, this is not an acute complication.

Choice B reason: Aspiration pneumonia is a potential complication of the patient's condition, especially given the presence of expressive aphasia. Patients with neurological deficits, particularly those affecting speech and swallowing, are at higher risk of aspirating food or liquids into the lungs, leading to pneumonia.

Choice C reason: Hypotension is not commonly a direct complication of a stroke, especially considering the patient's elevated blood pressure. Stroke patients often present with hypertension rather than hypotension.

Choice D reason: Heart failure, while related to the patient's underlying conditions like hypertension and possibly diabetes, is not an immediate complication of the acute neurological event described. The focus should be more on the neurological and respiratory complications.

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A student asks the nurse why a peripherally inserted central catheter is needed for a patient receiving Total Parenteral Nutrition (TPN) with 25% dextrose. Which response by the nurse is accurate?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Which patient problem is a significant risk factor for the development of delirium in the intensive care unit (ICU)?

Correct Answer is B

Explanation

Correct Answer is B

Explanation

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