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.
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Hypotension, chills, and thirst are not characteristic signs and symptoms of a thyroid storm. Hypotension generally indicates low blood pressure, while chills and thirst are less specific symptoms that do not particularly point to thyroid storm.
Choice B reason: Lethargy, confusion, and bradycardia are not typical indicators of a thyroid storm. These symptoms might be present in other conditions but are not generally associated with the severe hypermetabolic state seen in thyroid storms.
Choice C reason: Bradycardia, hypotension, and low urine output are also not typical signs of a thyroid storm. Bradycardia (slow heart rate) and hypotension (low blood pressure) are more likely associated with severe hypothyroidism or other conditions, not the hyperactive state of a thyroid storm.
Choice D reason: Fever, tachycardia, and tremors are classic signs of a thyroid storm. A thyroid storm is a life-threatening condition characterized by an excessive amount of thyroid hormones, leading to hypermetabolic activity. This results in symptoms like a high fever, rapid heart rate (tachycardia), and tremors.
Correct Answer is D
Explanation
Choice A reason: Idiopathic pulmonary fibrosis is a chronic, progressive lung disease characterized by scarring of the lung tissue. Tissue plasminogen activators (tPAs) are not used for this condition, as they are primarily designed to dissolve blood clots, not to address fibrotic changes in the lungs.
Choice B reason: Sarcoidosis is an inflammatory disease that affects multiple organs, particularly the lungs and lymph glands. It involves the growth of tiny collections of inflammatory cells called granulomas. Tissue plasminogen activators are not used in the treatment of sarcoidosis since the condition is not related to blood clots but rather to immune system dysregulation.
Choice C reason: Atelectasis is the complete or partial collapse of a lung or lobe of a lung due to alveoli deflation. The treatment typically focuses on re-expanding the lung tissue through techniques such as deep breathing exercises, bronchoscopy, or mechanical ventilation. Tissue plasminogen activators are not relevant for this condition, as they are used to dissolve blood clots, not to treat lung collapse.
Choice D reason: Pulmonary embolus (PE) is a blockage in one of the pulmonary arteries in the lungs, usually caused by blood clots that travel to the lungs from the legs or other parts of the body (deep vein thrombosis). Tissue plasminogen activators are used to treat PE because they can effectively dissolve the blood clots obstructing the pulmonary arteries, thereby restoring normal blood flow and preventing further complications.
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