Which pathophysiologic change is found in the brain tissue of people who have Alzheimer's disease?
Decreased dopamine
Increased glial cells
Increased glutamate
Neurofibrillary tangles
The Correct Answer is D
A. Dopamine is primarily associated with other neurodegenerative disorders such as Parkinson's disease, not Alzheimer's disease. In Alzheimer's disease, the focus is on changes related to beta-amyloid plaques and neurofibrillary tangles rather than alterations in dopamine levels.
B. Glial cells, including astrocytes and microglia, play a role in the brain's immune response and support of neurons. In Alzheimer's disease, there is evidence of increased activation and proliferation of glial cells in response to neuroinflammation and the presence of beta-amyloid plaques and neurofibrillary tangles. This reactive gliosis is a secondary response to the underlying pathology.
C. Glutamate is an excitatory neurotransmitter involved in various brain functions, including memory and learning. In Alzheimer's disease, there is evidence of dysregulation in glutamate metabolism and
signaling pathways. This dysregulation can lead to excitotoxicity, which contributes to neuronal damage and cell death seen in the disease.
D. Neurofibrillary tangles are one of the hallmark pathological features of Alzheimer's disease. These tangles are aggregates of hyperphosphorylated tau protein that accumulate inside neurons, disrupting their normal functioning and eventually leading to cell death. Neurofibrillary tangles, along with beta- amyloid plaques, contribute to the progressive cognitive decline observed in Alzheimer's disease.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Fluticasone is a corticosteroid inhaler used for maintenance therapy to reduce inflammation in the airways over time. It is not a rescue medication for acute symptoms. Clients with COPD should use short-acting bronchodilators (such as albuterol) as their first-line treatment for relieving acute symptoms like shortness of breath or wheezing.
B. This statement is correct. Fluticasone is a corticosteroid medication that, when inhaled, can increase the risk of developing oral candidiasis (thrush). Clients should be instructed to rinse their mouth with water and spit after using the inhaler to minimize this risk. Inspecting the mouth daily for signs of white patches, soreness, or difficulty swallowing is important. If thrush develops, clients may need antifungal treatment.
C. This statement is not necessary for fluticasone inhaler use. Fluticasone is not known to significantly affect heart rate. Monitoring heart rate before each dose is more relevant for medications that can cause changes in heart rate, such as bronchodilators (e.g., beta-agonists). However, clients should monitor for symptoms like palpitations or rapid heart rate and report them to their healthcare provider.
D. Fluticasone is a maintenance medication that should be taken regularly as prescribed, regardless of symptoms. Skipping doses can lead to worsening of COPD symptoms and exacerbations. Clients should adhere to the prescribed dosing schedule to achieve optimal control of their condition.
Correct Answer is C
Explanation
A. While assessing pedal pulses is important for circulation and can indicate peripheral vascular status, it is not the highest priority compared to assessing renal function in a client with TTP.
B. Nutritional status is important for overall health and recovery but is not immediately critical compared to assessing for acute complications such as kidney damage in TTP.
C. TTP can lead to kidney damage due to the formation of clots in the small blood vessels of the kidneys. This can result in decreased urine output or even acute kidney injury (AKI). Monitoring urine output is crucial to assess renal function and detect early signs of kidney involvement.
D. TTP primarily affects the kidneys and blood coagulation system, leading to hemolysis and thrombocytopenia. Liver function is not typically a primary concern in TTP unless there are concurrent issues or complications.
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