Individuals with diabetes are also at increased risk for developing infection due to hyperglycemia related to microvascular, macrovascular, and neuropathic complications due to:
Excess protein in the blood provides an optimal environment for some pathogens, allowing rapid proliferation.
Excess glucose in blood provides an optimal environment for some pathogens, allowing rapid proliferation.
They produce less White Blood cells.
White Blood Cell destruction and high levels of glycosylated hemoglobin prevent release of oxygen to the tissues.
The Correct Answer is B
Choice A reason: While protein metabolism can be affected in diabetes, excess protein in the blood is not the primary mechanism increasing infection risk. Pathogens generally thrive more in high-glucose environments rather than high-protein conditions.
Choice B reason: Excess glucose in the blood creates an optimal environment for many pathogens to proliferate rapidly. High blood sugar levels weaken the immune system by impairing the function of white blood cells, making it harder for the body to fight off infections. This is particularly significant in the microvascular and macrovascular systems where the blood vessels can become damaged, further compromising immune response.
Choice C reason: Diabetic individuals do not necessarily produce fewer white blood cells. However, the functionality of these cells can be impaired by hyperglycemia, reducing their ability to fight off infections effectively.
Choice D reason: While high levels of glycosylated hemoglobin (HbA1c) indicate poor blood sugar control over a long period, the destruction of white blood cells is not the primary reason for increased infection risk. The issue lies more with the impaired function of white blood cells and the conducive environment that excess glucose provides for pathogens.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: NGT (nasogastric tube) is used for enteral feeding, not parenteral nutrition. Enteral feeding involves delivering nutrients directly to the stomach or small intestine, bypassing the need for eating. This method is suitable for patients who have a functioning digestive system but cannot eat orally. Parenteral nutrition, on the other hand, involves delivering nutrients directly into the bloodstream.
Choice B reason: Oral administration of nutrition involves consuming food or nutrients by mouth. This method is suitable for individuals who can eat and digest food normally. Parenteral nutrition bypasses the digestive system altogether and delivers nutrients directly into the bloodstream, making oral administration inappropriate for TPN.
Choice C reason: Central Line is the correct answer because Total Parenteral Nutrition (TPN) requires delivery of nutrients directly into a central vein, typically the superior vena cava. This is because TPN solutions are highly concentrated and can irritate smaller veins, leading to complications such as phlebitis. A central line allows for the safe administration of TPN, ensuring that the high osmolarity solution is rapidly diluted by the large volume of blood in the central veins.
Choice D reason: Peripheral line administration is used for Peripheral Parenteral Nutrition (PPN), not TPN. PPN can be delivered through a peripheral vein because it is less concentrated than TPN. Using a peripheral line for TPN is not appropriate due to the risk of complications from the high osmolarity of the TPN solution.
Correct Answer is D
Explanation
Choice A reason: This statement is partially correct but does not fully address the question about glucose readings. The Dawn Phenomenon involves an increase in blood glucose levels in the early morning due to the release of counter-regulatory hormones (like cortisol and growth hormone) that increase insulin resistance and stimulate glucose release from the liver.
Choice B reason: This statement is true but incomplete. The Dawn Phenomenon is indeed caused by the release of certain hormones, but this option does not specify the timing or the glucose readings.
Choice C reason: While the hyperglycemia associated with the Dawn Phenomenon does typically occur between 4 a.m. and 9 a.m., this option does not fully describe the nature of the glucose readings. It is more important to note that the hyperglycemia is not due to overnight hypoglycemia.
Choice D reason: This statement accurately describes the Dawn Phenomenon. It is characterized by morning hyperglycemia that is not caused by overnight hypoglycemia. Instead, it is due to the body's natural release of counter-regulatory hormones, which increase blood glucose levels during the early morning hours.
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