Geriatric Psychiatry Practice Questions

Q: A 70-year-old female with Alzheimer's disease presents with increased confusion and agitation. What is the most appropriate management?

Increase donepezil dose. ***Increase donepezil dose*** - In patients with Alzheimer's disease who develop **new or worsening neuropsychiatric symptoms** like confusion and agitation, increasing the dose of a **cholinesterase inhibitor** like donepezil can be beneficial. - This approach aims to reduce behavioral symptoms by improving **cholinergic transmission** without the significant side effects associated with antipsychotics in this vulnerable population. - Optimizing cholinesterase inhibitor therapy should be attempted before adding other medications. *Start an antipsychotic* - Antipsychotics carry a **black box warning** for increased mortality in elderly patients with dementia-related psychosis, especially those with **cardiovascular disease** or **cerebrovascular disease**. - They should generally be reserved as a **last resort** for severe, refractory agitation or psychosis when non-pharmacological and other pharmacological interventions have failed. - Risk of extrapyramidal symptoms, falls, and cognitive worsening. *Add a benzodiazepine* - Benzodiazepines can worsen **cognitive impairment**, increase the risk of **falls**, and potentially exacerbate **agitation** or confusion in elderly patients with dementia. - Their use should be strictly limited to short-term management of acute, severe agitation due to the risk of **paradoxical reactions** and dependence. - Particularly problematic in dementia due to cognitive side effects. *Start memantine* - Memantine is an **NMDA receptor antagonist** indicated for moderate to severe Alzheimer's disease to improve cognition and function. - While it can help manage some behavioral symptoms, it is typically added as **combination therapy** rather than as first-line adjustment when a patient is already on a cholinesterase inhibitor. - Optimizing existing therapy (increasing donepezil) is more appropriate before adding another agent.

Q: A 68-year-old male diagnosed with Lewy Body Dementia. Which neurotransmitter system is primarily affected?

Dopaminergic. **Dopaminergic** - The **dopaminergic system** is the **primary and most severely affected** neurotransmitter system in **Lewy Body Dementia (LBD)** due to the accumulation of **alpha-synuclein** Lewy bodies in dopaminergic neurons, particularly in the **substantia nigra**. - This leads to the characteristic **parkinsonian motor symptoms** such as **bradykinesia**, **rigidity**, and **tremor**, which are often prominent early in LBD. - **Note:** The **cholinergic system** is also significantly affected in LBD (even more than in Alzheimer's disease), which is why **cholinesterase inhibitors** are first-line treatment, but the dopaminergic deficit is considered primary. *Serotonergic* - While there can be some **serotonergic involvement** in LBD, it is not the primary or most significantly affected neurotransmitter system. - Dysregulation in serotonin pathways is more typically associated with mood disorders like **depression** and some aspects of **anxiety disorders**. *GABAergic* - The **GABAergic system** is not the primary target of neurodegeneration in LBD. GABA (gamma-aminobutyric acid) is the main **inhibitory neurotransmitter** in the brain. - Disruptions in GABAergic signaling are more commonly linked to conditions like **epilepsy** and **anxiety disorders**. *Glutamatergic* - **Glutamatergic dysfunction** can occur in various neurodegenerative diseases, including Alzheimer's disease, but it is not considered the primary neurotransmitter system affected in LBD. - Glutamate is the main **excitatory neurotransmitter**, and its dysregulation is often implicated in **excitotoxicity** and cognitive decline in various dementias.

Q: In the context of advanced Alzheimer's disease, which aspect of care is most critical for ensuring the well-being of both the patient and the caregiver?

Ensuring caregiver support. ***Ensuring caregiver support*** - **Caregiver burden** in advanced Alzheimer's is extremely high, leading to significant stress, depression, and physical health issues if not adequately addressed. - Providing support mechanisms like **respite care**, educational resources, and emotional counseling directly impacts the caregiver's capacity to continue providing quality care. - **Comprehensive caregiver support** is the foundation upon which all other aspects of care depend—without a supported caregiver, medication management, safety monitoring, and nutritional care cannot be sustained effectively. - This holistic approach ensures the well-being of **both patient and caregiver**, as emphasized in the question. *Managing medications* - While important, medication management primarily addresses symptoms and secondary conditions, but does not resolve the overarching issues of **caregiver burnout** and complex daily care needs. - Optimal medication adherence relies heavily on a supported and educated caregiver. *Preventing wandering* - **Safety** is a critical concern in Alzheimer's, but preventing wandering is one specific aspect of patient safety. - Focusing solely on wandering prevention neglects other vital aspects like daily care, emotional support, and the caregiver's own needs, which are equally important for overall well-being. *Providing nutritional support* - **Nutritional needs** become complex in advanced Alzheimer's due to dysphagia, decreased appetite, and cognitive challenges. - While essential for patient's physical health, it represents only one component of comprehensive care and largely depends on the caregiver's ability to facilitate adequate intake and address feeding difficulties.

Q: A 65-year-old man with severe Alzheimer's disease is experiencing agitation and aggression. What is the most appropriate management for this condition?

Implement non-pharmacological behavioral interventions. ***Implement non-pharmacological behavioral interventions*** - Non-pharmacological approaches are the **first-line treatment** for agitation and aggression in Alzheimer's disease due to fewer side effects and potential effectiveness. - These interventions include identifying and addressing triggers, providing a **calm environment**, routine activities, and redirection. *Increase the dose of donepezil* - Donepezil is a **cholinesterase inhibitor** used to improve cognitive symptoms in Alzheimer's disease, but it does not directly treat agitation or aggression. - Increasing its dose is unlikely to resolve behavioral disturbances and might exacerbate issues like **gastrointestinal side effects**. *Add a benzodiazepine for agitation* - Benzodiazepines are generally avoided in older adults, especially those with dementia, due to risks of **sedation**, cognitive impairment, falls, and paradoxical agitation. - They offer short-term relief but can worsen long-term behavioral and cognitive outcomes. *Initiate treatment with an antipsychotic medication* - While antipsychotics can be effective for severe agitation and aggression, they carry significant risks in elderly dementia patients, including increased **mortality**, cardiovascular events, and cerebrovascular adverse events. - They should be reserved for cases where non-pharmacological interventions have failed and the patient poses a significant risk to themselves or others.

Q: A patient with pneumonia for 5 days is admitted to the hospital with altered sensorium. He suddenly stops recognizing the doctor and staff, believes he is in jail, and complains of scorpions attacking him. His probable diagnosis is:

Acute delirium. ***Acute delirium*** - The sudden onset of altered **sensorium**, **disorientation** (not recognizing staff), and **hallucinations** (scorpions, being in jail) in a patient with a medical illness (pneumonia) is a classic presentation of **acute delirium**. - Delirium is characterized by an **acute disturbance in attention and cognition**, often fluctuating, and is commonly triggered by underlying medical conditions, infections, or medications. *Acute dementia* - **Dementia** is a chronic, progressive decline in cognitive function, not an acute or fluctuating state. - While dementia can involve cognitive impairment, it rarely presents with such sudden, vivid hallucinations and marked fluctuations in attention as seen here. *Acute schizophrenia* - **Schizophrenia** is a chronic psychotic disorder characterized by persistent delusions, hallucinations, and disorganized thought, typically with an onset in late adolescence or early adulthood. - The acute onset and clear precipitating factor (pneumonia) in an older adult (implied by pneumonia severity) make schizophrenia less likely; its symptoms are usually not as directly attributable to a physical illness. *Acute paranoia* - **Paranoia** involves irrational and persistent mistrust or suspicion of others, often with persecutory delusions but without the global cognitive impairment, disorientation, or vivid visual/tactile hallucinations described. - While the patient's belief of being in jail could be considered a delusion, the broader constellation of symptoms points strongly to a more widespread cognitive dysfunction indicative of delirium.

Q: A 72-year-old woman with a history of depression presents with recent onset of forgetfulness, word-finding difficulties, and apathy. Her symptoms have gradually progressed over the past year. What is the most likely diagnosis?

Alzheimer's disease. ***Alzheimer's disease*** - The **gradual onset and progressive worsening** over one year of **forgetfulness** (episodic memory impairment), **word-finding difficulties** (anomic aphasia), and **apathy** are characteristic features of **Alzheimer's disease**. - While the patient has a **history of depression**, the **progressive nature of cognitive decline** with multiple domains affected (memory, language, behavior) over a year suggests a neurodegenerative process rather than depression-related cognitive impairment (pseudodementia). - In pseudodementia, patients typically have **acute/subacute onset**, prominent **subjective complaints**, inconsistent cognitive performance, and **improvement with antidepressant treatment** - features not described here. *Vascular dementia* - Typically presents with **abrupt onset** or **stepwise decline** in cognitive function following cerebrovascular events. - Often associated with focal neurological signs, history of stroke/TIA, or vascular risk factors. - The **gradual, insidious progression** described makes this less likely. *Lewy body dementia* - Core features include **fluctuating cognition**, recurrent **visual hallucinations**, and **spontaneous parkinsonism**. - While apathy and memory issues can occur, the absence of these characteristic features makes this diagnosis less probable. *Frontotemporal dementia* - Primarily affects **personality and behavior** (behavioral variant) or **language** (primary progressive aphasia) with **relative preservation of episodic memory** in early stages. - The prominent **early forgetfulness** (memory impairment) makes Alzheimer's disease more likely than FTD.

Q: A 65-year-old woman presents with memory loss, difficulty performing familiar tasks, and changes in mood. Which finding would most likely support the diagnosis of Alzheimer's disease based on current diagnostic criteria?

Presence of significant memory impairment. **Presence of significant memory impairment** - **Significant memory impairment**, particularly in acquiring and recalling new information, is often the **earliest and most prominent symptom** in typical Alzheimer's disease. - While other cognitive domains are affected, memory loss is central to the diagnostic criteria, especially as presented in the initial stages. *Presence of neurofibrillary tangles* - **Neurofibrillary tangles** (composed of hyperphosphorylated tau protein) are a **pathological hallmark** of Alzheimer's disease found on post-mortem examination. - However, they are not typically detected directly during *in vivo* diagnostic workups, and their presence alone doesn't rule out other tauopathies. *Presence of amyloid plaques* - **Amyloid plaques** (extracellular deposits of amyloid-beta protein) are another **pathological hallmark** of Alzheimer's disease, identifiable post-mortem or through specialized imaging like **amyloid PET scans**. - While essential for definitive *pathological* diagnosis, their *in vivo* presence alone isn't sufficient for a clinical diagnosis, as amyloid plaques can be found in cognitively normal elderly individuals. *Gradual cognitive decline with preserved insight* - **Gradual cognitive decline** is characteristic of Alzheimer's, but **preserved insight** is generally *not* typical for later stages of the disease. - As cognitive deficits progress, insight often diminishes, and patients may become unaware of their impairments.

Q: Which of the following statements about Alzheimer's disease is true?

It is the most common cause of dementia.. ***It is the most common cause of dementia.*** - **Alzheimer's disease** accounts for **60-80% of dementia cases**, making it the leading cause of cognitive decline in older adults. - Its prevalence increases significantly with age, affecting millions worldwide. *The disease primarily affects people under 50 years of age* - This is incorrect; Alzheimer's disease is **predominantly a disease of older adults**. - While early-onset Alzheimer's (before age 65) exists, it accounts for less than 10% of cases. - The vast majority of cases occur in people **aged 65 and older**, with risk increasing dramatically with advancing age. *One in 2 people age 65 and older has Alzheimer's disease* - This figure is a significant overestimation; while prevalence increases with age, approximately **1 in 9 (11.3%) Americans aged 65 and older** have Alzheimer's, not 1 in 2. - The risk doubles every five years after age 65. *Alzheimer's disease can be completely cured with current medications* - Currently, there is **no cure for Alzheimer's disease**. - Available medications can help manage symptoms and slow cognitive decline but do not stop the underlying neurodegenerative process.

Question 1

A 70-year-old female with Alzheimer's disease presents with increased confusion and agitation. What is the most appropriate management?

Accepted Answer

Increase donepezil dose

Answer

Add a benzodiazepine

Answer

Start memantine

Answer

Start an antipsychotic

Question 2

In the context of geriatric psychiatry, which disorder is most commonly associated with severe cognitive impairment?

Accepted Answer

Alzheimer’s Disease

Answer

Bipolar Disorder

Answer

Major Depressive Disorder

Answer

Delirium

Question 3

A 68-year-old male diagnosed with Lewy Body Dementia. Which neurotransmitter system is primarily affected?

Accepted Answer

Dopaminergic

Answer

Serotonergic

Answer

GABAergic

Answer

Glutamatergic

Question 4

In the context of advanced Alzheimer's disease, which aspect of care is most critical for ensuring the well-being of both the patient and the caregiver?

Accepted Answer

Ensuring caregiver support

Answer

Managing medications

Answer

Preventing wandering

Answer

Providing nutritional support

Question 5

A 65-year-old man with severe Alzheimer's disease is experiencing agitation and aggression. What is the most appropriate management for this condition?

Accepted Answer

Implement non-pharmacological behavioral interventions

Answer

Increase the dose of donepezil

Answer

Add a benzodiazepine for agitation

Answer

Initiate treatment with an antipsychotic medication

Question 6

A patient with pneumonia for 5 days is admitted to the hospital with altered sensorium. He suddenly stops recognizing the doctor and staff, believes he is in jail, and complains of scorpions attacking him. His probable diagnosis is:

Accepted Answer

Acute delirium

Answer

Acute dementia

Answer

Acute schizophrenia

Answer

Acute paranoia

Question 7

A 72-year-old woman with a history of depression presents with recent onset of forgetfulness, word-finding difficulties, and apathy. Her symptoms have gradually progressed over the past year. What is the most likely diagnosis?

Accepted Answer

Alzheimer's disease

Answer

Vascular dementia

Answer

Lewy body dementia

Answer

Frontotemporal dementia

Question 8

A 65-year-old woman presents with memory loss, difficulty performing familiar tasks, and changes in mood. Which finding would most likely support the diagnosis of Alzheimer's disease based on current diagnostic criteria?

Accepted Answer

Presence of significant memory impairment

Answer

Presence of neurofibrillary tangles

Answer

Presence of amyloid plaques

Answer

Gradual cognitive decline with preserved insight

Question 9

Which of the following statements about Alzheimer's disease is true?

Accepted Answer

It is the most common cause of dementia.

Answer

The disease primarily affects people under 50 years of age

Answer

One in 2 people age 65 and older has Alzheimer's disease

Answer

Alzheimer's disease can be completely cured with current medications

Question 10

Which of the following is least characteristic of Alzheimer's disease?

Accepted Answer

Sequence of neurological abnormalities follows a described order

Answer

Gradual development of forgetfulness

Answer

Defective visuospatial orientation

Answer

Depression

Geriatric Psychiatry — MCQs

Geriatric Psychiatry — MCQs

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