139. CCA Practice Quiz: Secondary Dementias – Types, Causes, Symptoms and Care Considerations

Secondary dementias involve several conditions with different causes, symptoms, and patterns of progression. These practice questions ask you to compare conditions such as Creutzfeldt–Jakob disease and Wernicke–Korsakoff syndrome, think through cause-and-effect relationships, and make CCA role judgments. You will also work through short scenarios and direct knowledge questions.

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#1. A Nova Scotia CCA observes a change in a client with dementia that requires attention. Which approach matches the CCA role?

Correct answer: B. Follow the care plan, report the change, and leave comprehensive assessment to nursing.

Explanation: A Nova Scotia CCA follows the established care plan, reports changes requiring attention to a supervisor, and remains within the observational role. Comprehensive evaluation for care-planning decisions is separate from CCA observation.

Why A is wrong: Following the plan and reporting are appropriate, but the CCA does not perform a comprehensive nursing assessment.
Why C is wrong: The CCA’s observations do not authorize comprehensive assessment or independent care-planning decisions.
Why D is wrong: Reporting is appropriate, but independently updating the care plan exceeds the identified responsibility.

#2. Can Wernicke–Korsakoff syndrome develop without prolonged heavy alcohol consumption?

Correct answer: C. Yes, when another condition causes severe malnutrition

Explanation: WKS can occur when severe malnutrition leads to thiamine deficiency, even without prolonged heavy alcohol use. The underlying problem is a lack of vitamin B₁.

Why A is wrong: Abnormal prions are associated with CJD.
Why B is wrong: Cerebrospinal fluid accumulation is associated with hydrocephalus.
Why D is wrong: A progressive movement disorder does not identify the nutritional cause of WKS.

#3. Which combination best describes advanced neurological deterioration in Creutzfeldt–Jakob disease?

Correct answer: B. Obvious dementia progressing toward a mute, rigid state

Explanation: Dementia becomes evident as CJD advances. Severe neurological deterioration eventually produces a state involving muteness and rigidity.

Why A is wrong: CJD is progressively disabling rather than a condition involving full movement recovery.
Why C is wrong: Progressive CJD does not follow a typical course of restored communication.
Why D is wrong: Stability and mobility worsen as the disease advances.

#4. Apart from Parkinson’s disease, CJD, hydrocephalus, and substance-related conditions, which group contains other causes of secondary dementia?

Correct answer: C. AIDS, Huntington’s disease, multiple sclerosis, and syphilis

Explanation: Acquired immune deficiency syndrome (AIDS), Huntington’s disease, multiple sclerosis (MS), and syphilis are additional health conditions that can cause secondary dementia. They extend the range of possible causes beyond the conditions named in the question.

Why A is wrong: CJD is already one of the conditions excluded by the question.
Why B is wrong: Parkinson’s disease is already among the conditions excluded by the question.
Why D is wrong: Normal-pressure hydrocephalus is already among the conditions excluded by the question.

#5. Which statement best describes the limitations of thiamine treatment for Wernicke–Korsakoff syndrome?

Correct answer: C. Thiamine treatment may not fully reverse amnesia or existing brain damage.

Explanation: Thiamine replacement treats the deficiency associated with WKS, but amnesia and brain damage do not always respond. Correcting the deficiency does not guarantee recovery of damaged neurological functions.

Why A is wrong: Full restoration of memory is not guaranteed.
Why B is wrong: Existing brain damage may fail to respond to thiamine treatment.
Why D is wrong: Thiamine replaces the deficient vitamin, while memory recovery remains uncertain.

#6. Which group of symptoms is characteristic of normal-pressure hydrocephalus?

Correct answer: B. Walking difficulty, memory loss, and urinary incontinence

Explanation: Normal-pressure hydrocephalus is associated with difficulty walking, memory loss, and loss of urinary control. Together, these symptoms form an important pattern associated with the condition.

Why A is wrong: Body spasms are identified as an early symptom of CJD rather than part of this symptom grouping.
Why C is wrong: Hallucinations do not replace memory loss in the identified grouping.
Why D is wrong: Excessive sleepiness does not replace walking difficulty in the identified grouping.

#7. Which combination represents three different mechanisms of substance-induced persisting dementia?

Correct answer: A. Direct brain-cell toxicity, internal organ effects, and fall-related brain injury

Explanation: Substance-induced persisting dementia can involve direct toxicity to brain cells, substance-related organ effects, or acquired brain injuries from falls while impaired or disoriented. These represent different pathways leading to cognitive decline.

Why B is wrong: Brain-fluid accumulation is a mechanism of normal-pressure hydrocephalus.
Why C is wrong: Prion infection is associated with CJD rather than substance-induced persisting dementia.
Why D is wrong: Brain-fluid accumulation and vitamin deficiency describe mechanisms associated with other secondary dementias.

#8. Which combination of emotional and perceptual changes may accompany Parkinson’s disease?

Correct answer: C. Depression, hallucinations, and delusions

Explanation: People with Parkinson’s disease may develop depression, hallucinations, and delusions in addition to movement and cognitive problems. These changes are separate from the main movement symptoms.

Why A is wrong: Fatigue and excessive sleepiness are not the specified combination of emotional and perceptual changes.
Why B is wrong: Insomnia and anorexia do not complete the identified grouping.
Why D is wrong: Urinary incontinence and fatigue do not represent the specified emotional and perceptual grouping.

#9. Which internal organs may be affected by substances that contribute to persisting dementia?

Correct answer: C. Liver, heart, and kidneys

Explanation: Substance-related effects on the liver, heart, and kidneys can contribute to cognitive decline. Organ damage is a different mechanism from substances directly damaging brain cells.

Why A is wrong: The stomach and lungs do not complete the identified organ grouping.
Why B is wrong: The lungs replace the liver in the identified combination.
Why D is wrong: The stomach and intestines are not the identified combination of internal organs.

#10. How can poor eating habits in people who drink heavily contribute to Wernicke–Korsakoff syndrome?

Correct answer: A. Inadequate nutrition can reduce essential vitamin intake.

Explanation: People who consume excessive alcohol may have poor eating habits that leave them without adequate essential vitamins. Insufficient thiamine intake can contribute to WKS.

Why B is wrong: Cerebrospinal fluid accumulation is a different mechanism.
Why C is wrong: Prion accumulation is not caused by the nutritional mechanism being tested.
Why D is wrong: Brain shunt blockage is not an identified cause of WKS.

#11. Which statement best describes dementia?

Correct answer: D. A group of illnesses causing progressive cognitive and social decline

Explanation: Dementia involves progressive loss of brain functions, including cognitive and social abilities. It is not one specific disease and may be classified as a mild or major neurocognitive disorder.

Why A is wrong: Dementia affects more than memory.
Why B is wrong: Movement difficulties alone do not define dementia.
Why C is wrong: Dementia involves progressive decline rather than simply temporary difficulties.

#12. What additional treatment may sometimes be recommended for Wernicke–Korsakoff syndrome?

Correct answer: B. Drug therapy

Explanation: Drug therapy may be recommended in some cases of WKS. Thiamine replacement, nutrition, and hydration remain the identified treatment measures.

Why A is wrong: Fluid drainage is associated with normal-pressure hydrocephalus.
Why C is wrong: Prion-related treatment is not the additional therapy identified for WKS.
Why D is wrong: Correcting cerebrospinal fluid problems addresses a different cause of secondary dementia.

#13. In Nova Scotia, what must a CCA do when noticing a change in a client’s condition that requires attention?

Correct answer: C. Report the change to a supervisor.

Explanation: Nova Scotia CCAs report changes in a client’s condition that require attention to a supervisor. This is a reporting responsibility, not permission to independently revise care.

Why A is wrong: A later record or review does not replace reporting a change requiring attention to a supervisor.
Why B is wrong: Discussing a change with another CCA does not replace the specified supervisory report.
Why D is wrong: A CCA does not independently revise the care plan in response to the observation.

#14. How can a substance-related fall contribute to secondary dementia?

Correct answer: D. The fall can cause an acquired brain injury that results in cognitive decline.

Explanation: Secondary dementia can result from an injury, including an acquired brain injury caused by a fall while a person is impaired or disoriented. This mechanism differs from direct toxicity or substance-related damage to internal organs.

Why A is wrong: Increased fluid production is not the identified injury-related mechanism.
Why B is wrong: A fall is not the identified cause of prion-related CJD.
Why C is wrong: Vitamin deficiency and cerebrospinal fluid accumulation are different mechanisms.

#15. A client develops lasting cognitive difficulties after falling while impaired by a substance. Which mechanism may explain the dementia?

Correct answer: D. An acquired brain injury from the fall

Explanation: Falls occurring while a person is impaired or disoriented can cause an acquired brain injury, or ABI. Such an injury is one possible mechanism of substance-induced persisting dementia.

Why A is wrong: Poor fluid reabsorption is associated with normal-pressure hydrocephalus.
Why B is wrong: Thiamine deficiency causes Wernicke–Korsakoff syndrome.
Why C is wrong: Prions are associated with CJD rather than a substance-related fall.

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