In older adults, a gradual and progressive decline in mental processing ability that affects short term memory, communication, language, judgment, reasoning and abstract thinking, is the definition of which of the following?
Dementia
Depression
Medication toxicity
Delirium
The Correct Answer is A
Choice A reason: Dementia is a clinical syndrome characterized by a chronic, global, and usually irreversible decline in cognitive function. It specifically targets higher-order cortical functions including memory, language (aphasia), purposeful movement (apraxia), and executive functioning. The progression is typically slow, spanning several years, which distinguishes it from acute confessional states.
Choice B reason: Depression in older adults (sometimes called pseudodementia) can mimic cognitive impairment. However, the onset of "forgetfulness" in depression is often more rapid, and the patient is typically distressed by their memory loss. In true dementia, the patient may be unaware of or indifferent to their cognitive deficits due to anosognosia.
Choice C reason: Medication toxicity usually presents as an acute change in mental status, often manifesting as delirium. While polypharmacy is a significant concern in geriatrics, the resulting cognitive impairment is typically reversible once the offending pharmacological agent is metabolized or discontinued, rather than being a "gradual and progressive" decline.
Choice D reason: Delirium is defined by its acute onset, fluctuating course, and disturbances in consciousness and attention. While it affects mental processing, it is a temporary physiological consequence of an underlying medical condition (like a urinary tract infection) rather than a permanent, progressive structural decline of brain tissue.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: The presence of a specific suicide plan in a patient with major depression constitutes a psychiatric emergency. Safety is always the highest priority in the hierarchy of needs. The nurse must establish 1:1 observation or suicide or constant visual monitoring to prevent self-harm, as the patient’s intent and plan indicate an immediate threat to life.
Choice B reason: While group therapy is an effective evidence-based intervention for addressing chronic low self-esteem and social isolation in depressed patients, it is not a priority during an acute suicidal crisis. The patient must be stabilized and safe before they can meaningfully participate in or benefit from the interpersonal dynamics of a therapeutic group setting.
Choice C reason: Observing for therapeutic effects is important, but antidepressants typically require 2 to 4 weeks to show significant clinical improvement. At 1 week, the patient remains highly symptomatic and may even experience a "wash-in" period where energy increases slightly while suicidal ideation remains high, actually increasing the immediate risk of a suicide attempt.
Choice D reason: A weight loss of 9 kilograms in 1 month is significant and requires nutritional intervention like high-calorie snacks. However, nutritional status is secondary to immediate physical safety. Physical survival from a suicide attempt takes precedence over correcting nutritional deficits, although both will eventually be addressed in the comprehensive multidisciplinary plan of care.
Correct Answer is C
Explanation
Choice A reason: Aphasia refers to the loss of the ability to understand or express speech caused by brain damage. While the patient is struggling with names, the primary issue described is the failure to recognize the identity or function of objects, which is distinct from the motor or conceptual production of language.
Choice B reason: Anhedonia is a clinical term used to describe the inability to feel pleasure or a decreased interest in activities that were previously found enjoyable. It is a hallmark symptom of depression and some phases of schizophrenia, but it is unrelated to cognitive recognition of household objects.
Choice C reason: Agnosia is the inability to interpret sensory information and recognize objects, people, or sounds despite intact sensory organs. In Alzheimer's disease, this manifests as a patient looking at a common item like a telephone or pencil and being unable to identify what it is or its purpose.
Choice D reason: Apraxia is the loss of the ability to perform purposeful, learned movements or gestures, such as tying shoelaces or using a spoon, even though the patient has the physical desire and capacity to move. It is a motor planning deficit rather than a sensory recognition deficit.
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