The clinical diagnosis of dementia is based on
CT or MRI
Patient history and cognitive assessment
Brain biopsy
Electroencephalogram
The Correct Answer is B
Choice A reason: While CT or MRI scans can be helpful in identifying structural changes in the brain associated with dementia, such as atrophy or the presence of strokes, they are not sufficient on their own to diagnose dementia. These imaging techniques are often used to rule out other causes of cognitive impairment and to support a clinical diagnosis, but they do not provide a complete picture of a patient's cognitive function.
Choice B reason: Patient history and cognitive assessment are the primary methods for diagnosing dementia. The clinical diagnosis is based on a thorough evaluation of the patient's medical history, including any changes in cognitive function, behavior, and daily living activities. Cognitive assessments, such as the Mini-Mental State Examination (MMSE) or Montreal Cognitive Assessment (MoCA), are used to evaluate memory, attention, language, and other cognitive abilities. These assessments help to determine the presence and severity of cognitive impairment and differentiate dementia from other conditions that may cause similar symptoms.
Choice C reason: A brain biopsy is not a standard procedure for diagnosing dementia. It is an invasive procedure that involves taking a small sample of brain tissue for examination under a microscope. While it can provide definitive information about certain types of dementia, such as Creutzfeldt-Jakob disease, it is rarely used due to its invasiveness and associated risks.
Choice D reason: An electroencephalogram (EEG) is a test that measures electrical activity in the brain. It can be useful in diagnosing certain neurological conditions, such as epilepsy, but it is not typically used to diagnose dementia. EEGs do not provide detailed information about cognitive function or the structural changes in the brain associated with dementia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: "It must have been from sharing needles with my roommate." This statement is incorrect because hepatitis A is not typically transmitted through sharing needles. Hepatitis A is primarily spread through the fecal-oral route, which involves ingestion of contaminated food or water.
Choice B reason: "It is likely transmitted through kissing or sexual activity." This statement is also incorrect. Hepatitis A is not commonly spread through kissing or sexual activity. It is mainly transmitted through consuming contaminated food or water or close contact with an infected person.
Choice C reason: "I think I caught it because I have a family history of liver problems." This statement reflects a misunderstanding of how hepatitis A is transmitted. Hepatitis A is not linked to genetic predisposition or family history of liver problems. It is an infectious disease spread through the fecal-oral route.
Choice D reason: "I probably got it from drinking contaminated water or eating food handled by someone who didn't wash their hands properly." This statement is correct and indicates an accurate understanding of how hepatitis A is transmitted. The virus is often spread through consumption of contaminated food or water, particularly in areas with poor sanitation.
Correct Answer is D
Explanation
Choice A reason: Cyanosis and hypertension are not typically associated with severe anemia. While anemia can lead to tissue hypoxia, cyanosis is more related to respiratory or cardiovascular problems, and hypertension is not a common consequence of anemia.
Choice B reason: Dysrhythmias and expiratory wheezing are not directly related to severe anemia. Dysrhythmias can occur in severe cases due to the heart's increased workload, but expiratory wheezing is generally associated with respiratory conditions like asthma or chronic obstructive pulmonary disease (COPD).
Choice C reason: Pulmonary edema and fibrosis are not linked to severe anemia. These conditions are related to heart failure, lung injury, or chronic lung diseases, rather than anemia.
Choice D reason: Dyspnea and increased heart rate are expected findings in a severely anemic patient. Dyspnea, or difficulty breathing, occurs because the body is not getting enough oxygen due to the reduced number of red blood cells. The heart rate increases as a compensatory mechanism to deliver more oxygenated blood to the tissues.
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