Consultation-Liaison Psychiatry Practice Questions

Q: Depression is most commonly seen in patients suffering from which of the following cancers?

Pancreatic cancer. **Explanation:** The association between **Pancreatic Cancer** and **Depression** is a classic high-yield concept in Consultation-Liaison Psychiatry. **Why Pancreatic Cancer is the Correct Answer:** Pancreatic cancer has the highest prevalence of depression among all malignancies (estimated between 30-50%). Crucially, depression in these patients often presents as a **prodromal symptom**, appearing months before the physical diagnosis of the tumor. The underlying mechanism is believed to be **paraneoplastic** in nature, involving the release of pro-inflammatory cytokines (like IL-6 and TNF-alpha) and alterations in the kynurenine pathway, which depletes serotonin levels even before significant tumor burden or cachexia occurs. **Analysis of Incorrect Options:** * **A. Brain Cancer:** While brain tumors (especially frontal lobe lesions) can cause personality changes and mood symptoms, the statistical prevalence of clinical depression is lower than in pancreatic cancer. * **C. Lung Cancer:** Depression is common in lung cancer due to high symptom burden and smoking-related comorbidities, but it typically follows the diagnosis rather than preceding it as a biological prodrome. * **D. Kidney Cancer:** While chronic illness increases the risk of adjustment disorders, there is no specific biological or statistical link making it the "most common" compared to pancreatic malignancy. **NEET-PG High-Yield Pearls:** * **Prodromal Depression:** If an elderly patient presents with new-onset depression and unexplained weight loss, always screen for occult pancreatic malignancy. * **Cytokine Theory:** Depression in cancer is not just a psychological reaction; it is often a biological manifestation of systemic inflammation. * **Treatment:** SSRIs remain the first-line treatment, but Mirtazapine is often preferred in cancer patients to help with insomnia and appetite stimulation.

Q: Which of the following psychiatric illnesses is common in a patient with stroke?

Depression. **Explanation:** **Post-Stroke Depression (PSD)** is the most common neuropsychiatric complication following a stroke, affecting approximately **30% to 35%** of survivors. 1. **Why Depression is Correct:** The etiology of PSD is multifactorial, involving both **biological factors** (disruption of amine pathways, particularly serotonin and norepinephrine, due to ischemic injury) and **psychosocial factors** (reaction to new physical disability and loss of independence). Studies indicate that lesions in the **left frontal cortex** and **left basal ganglia** are more strongly associated with the development of severe depression. 2. **Why Other Options are Incorrect:** * **Schizophrenia:** This is a primary psychotic disorder with a typical onset in late adolescence or early adulthood. While "post-stroke psychosis" can occur, it is rare compared to mood disorders. * **Bipolar Disorder:** Post-stroke mania is significantly less common than depression and is usually associated with lesions in the **right hemisphere** (specifically the temporal or orbitofrontal cortex). * **Psychosis:** While strokes can cause hallucinations or delusions (organic psychosis), the prevalence is low (approx. 4-5%) compared to the high incidence of depressive symptoms. **High-Yield Clinical Pearls for NEET-PG:** * **Treatment:** SSRIs (e.g., Sertraline, Fluoxetine) are the first-line treatment for PSD and have been shown to improve both mood and motor recovery. * **Location Correlation:** Left-sided lesions (Frontal) → Depression; Right-sided lesions → Mania/Indifference. * **Differential:** Always rule out **Vascular Dementia** if cognitive decline is prominent alongside mood changes.

Q: Consultation-Liaison psychiatry involves diagnosing which of the following?

Psychiatric illness in medically ill patients. **Explanation:** **Consultation-Liaison (C-L) Psychiatry**, also known as Psychosomatic Medicine, is a specialized sub-discipline that serves as the bridge between psychiatry and other medical/surgical specialties. **1. Why Option A is Correct:** The primary role of a C-L psychiatrist is to diagnose and manage **psychiatric illnesses occurring in patients hospitalized for medical, surgical, or obstetric conditions**. These patients are often in general hospital wards (e.g., ICU, Oncology, or Cardiology) where their physical illness either triggers, exacerbates, or coexists with a mental disorder (such as Delirium, Depression due to chronic illness, or Adjustment Disorder). **2. Why the Other Options are Incorrect:** * **Option B:** While psychiatrists must be aware of physical health, the primary focus of the *C-L service* is the psychiatric complication of the medical patient, not the primary medical diagnosis of a psychiatric inpatient. * **Options C & D:** While assessing suicidality is a critical skill in psychiatry, it is a specific clinical task rather than the defining scope of the C-L specialty. C-L psychiatry covers a much broader range of conditions, including delirium, capacity assessments, and somatoform disorders. **High-Yield Clinical Pearls for NEET-PG:** * **Most Common Referral:** The most frequent reason for a C-L consultation in a general hospital is **Delirium** (Acute Confusional State). * **Common Scenarios:** Managing post-MI depression, neuropsychiatric symptoms in SLE, or psychological distress in terminal cancer patients. * **Key Function:** It involves two components—**Consultation** (providing expert opinion on a specific patient) and **Liaison** (improving the communication and mental health skills of the non-psychiatric medical staff).

Q: A 60-year-old man had undergone cardiac bypass surgery 2 days back. Now he started forgetting things and was not able to recall names and phone numbers of his relatives. What is the probable diagnosis?

Delirium. ***Delirium*** - The **acute onset** of memory loss and confusion **2 days after cardiac bypass surgery** is characteristic of **postoperative delirium**. - Delirium is a disturbance in **attention**, **awareness**, and **cognition** that develops over a short period (hours to days) and is directly related to a medical condition or procedure. - **Cardiac surgery** is a well-known risk factor, with delirium occurring in **10-50%** of cardiac bypass patients due to factors like anesthesia, hypoperfusion, inflammation, and physiological stress. - Key features here: **acute onset**, **temporal relationship to surgery**, and **memory/cognitive deficits** without psychotic symptoms. *Alzheimer's disease* - Alzheimer's is a **chronic, progressive neurodegenerative disorder** with **gradual onset** over months to years. - The **sudden appearance** of symptoms immediately after surgery cannot be explained by Alzheimer's disease. - While Alzheimer's causes memory impairment, it does not present acutely in the postoperative setting. *Depression* - Depression can cause **pseudodementia** with cognitive complaints, but the primary features would be **persistent low mood**, **anhedonia**, **sleep disturbance**, and **appetite changes**. - The **acute temporal link** to surgery and absence of mood symptoms make depression unlikely. - Cognitive symptoms in depression are typically subjective complaints rather than objective deficits. *Post-traumatic psychosis* - This would involve **psychotic symptoms** such as **hallucinations**, **delusions**, or **disorganized behavior**, which are not described in this case. - The presentation of simple **memory deficits** without psychotic features does not support this diagnosis. - Surgery itself is not typically considered a psychologically traumatic event that would trigger psychosis.

Q: A 68-year-old man who was a diagnosed case of HIV infection for last 12 years was brought to outpatient department for evaluation. His wife reports that for last 6 months she has been noticing changes in his behaviour. She further added that 'He appears uninterested and doesn't seem to care about anything. I haven't seen him crying or saying something negative, but may be he is getting depressed. He is also having difficulty remembering things ' The patient has been irregular with his HIV medications. His last CD4+ cell count, measured 5 months ago, was 210/mm3. While walking , patient was observed to have subtle jerking movements. Which of the following is the likely diagnosis?

HIV-associated dementia. ***HIV-associated dementia*** - The patient's **HIV infection for 12 years**, **low CD4+ count (210/mm3)**, **behavioral changes (apathy, memory difficulties)**, and **subtle jerking movements** are all classic features of HIV-associated dementia (HAD). - HAD is a **subcortical dementia** that presents with cognitive slowing, motor dysfunction, and behavioral changes, often seen in advanced HIV disease. *Alzheimer's disease* - While Alzheimer's involves memory loss and behavioral changes, the patient's **long-standing HIV infection with a low CD4+ count** and **motor symptoms (jerking movements)** make HAD a more direct and likely diagnosis. - Alzheimer's typically presents with more prominent **cortical deficits** like aphasia and apraxia, which are not described here, and is not directly linked to HIV status. *Major depressive disorder* - The patient exhibits **apathy and lack of interest**, which can be symptoms of depression. However, the presence of **memory difficulties, jerking movements**, and a **low CD4+ count** points towards an organic brain pathology rather than solely a mood disorder. - While depression can coexist with HIV, it does not explain the **neurological and motor symptoms** observed. *Delirium* - **Delirium** is characterized by an **acute onset of fluctuating attention and cognition**, often with altered consciousness, and typically has a clear underlying medical cause. - The described symptoms are more insidious (over 6 months), chronic, and progressive rather than acute and fluctuating, making delirium less likely.

Q: What does Consultation-liaison (C-L) psychiatry involve?

Psychiatric illness in medically ill. ***Psychiatric illness in medically ill*** - Consultation-liaison (C-L) psychiatry focuses on the **diagnosis** and **management** of mental health conditions that arise in individuals with co-occurring medical illnesses. - It involves close collaboration between psychiatrists and other medical teams to address the psychological impact of physical disease and optimize overall patient care. - This is the **core definition** of C-L psychiatry—psychiatric complications in the context of primary medical illness. *Suicidal tendency in psychiatric patients* - While suicide risk assessment is a crucial part of general psychiatry, this option is too broad as it doesn't emphasize the unique context of C-L psychiatry. - C-L psychiatry specifically addresses psychiatric issues in the context of patients with existing **medical conditions**, not general psychiatric patients. *Suicidal tendency in medically ill* - This is a significant aspect of C-L psychiatry, as medically ill patients may experience **depression** and **distress** leading to suicidal ideation. - However, C-L psychiatry encompasses a **broader range** of psychiatric illnesses in medically ill patients, not just suicidal tendencies—this option is too narrow. *Medical illness of psychiatric patients* - This describes a situation where a patient with a primary psychiatric diagnosis develops a medical illness, which is the **reverse** of the typical C-L psychiatry focus. - While this bidirectional care is also relevant, the core concept of C-L psychiatry is addressing **psychiatric complications** that emerge in the context of a primary medical illness in medical/surgical settings.

Q: Insane paresis is associated with -

Syphilis. ***Syphilis*** - **General paresis**, or "insane paresis," is a neuropsychiatric manifestation of **tertiary syphilis**, resulting from chronic meningoencephalitis. - It presents with progressive **dementia**, personality changes, delusions, and neurological deficits. *Leishmaniasis* - This parasitic disease is characterized by various forms including **cutaneous**, **mucocutaneous**, and **visceral leishmaniasis** (kala-azar). - It typically causes skin lesions, mucocutaneous destruction, or systemic symptoms like fever, hepatosplenomegaly, and pancytopenia, but not general paresis. *Yellow fever* - **Yellow fever** is a viral hemorrhagic disease transmitted by mosquitoes, primarily affecting the liver and kidneys. - Symptoms include fever, jaundice, hemorrhage, and shock, but not the neurological degeneration seen in general paresis. *Neisseria meningitidis* - This bacterium causes **meningococcal meningitis** and **meningococcemia**, which are acute and severe infectious diseases. - While it can lead to acute neurological symptoms due to meningitis, it does not cause the chronic, progressive neuropsychiatric syndrome known as general paresis.

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.

Question 1

Which class of medications is known to worsen the symptoms of delirium in patients post-cardiac surgery?

Accepted Answer

Anticholinergics

Answer

Antipsychotics

Answer

Benzodiazepines (BZD)

Answer

Antihistamines

Question 2

What is the most common psychological feature of AIDS?

Accepted Answer

Depression

Answer

Mania

Answer

Suicidal tendency

Answer

None of the above

Question 3

Depression is most commonly seen in patients suffering from which of the following cancers?

Accepted Answer

Pancreatic cancer

Answer

Brain cancer

Answer

Lung cancer

Answer

Kidney cancer

Question 4

Which of the following psychiatric illnesses is common in a patient with stroke?

Accepted Answer

Depression

Answer

Schizophrenia

Answer

Bipolar disorder

Answer

Psychosis

Question 5

Consultation-Liaison psychiatry involves diagnosing which of the following?

Accepted Answer

Psychiatric illness in medically ill patients

Answer

Medical illness in psychiatric patients

Answer

Suicidal tendency in psychiatric patients

Answer

Suicidal tendency in medically ill patients

Question 6

A 60-year-old man had undergone cardiac bypass surgery 2 days back. Now he started forgetting things and was not able to recall names and phone numbers of his relatives. What is the probable diagnosis?

Accepted Answer

Delirium

Answer

Alzheimer's disease

Answer

Depression

Answer

Post-traumatic psychosis

Question 7

A 68-year-old man who was a diagnosed case of HIV infection for last 12 years was brought to outpatient department for evaluation. His wife reports that for last 6 months she has been noticing changes in his behaviour. She further added that 'He appears uninterested and doesn't seem to care about anything. I haven't seen him crying or saying something negative, but may be he is getting depressed. He is also having difficulty remembering things ' The patient has been irregular with his HIV medications. His last CD4+ cell count, measured 5 months ago, was 210/mm3. While walking , patient was observed to have subtle jerking movements. Which of the following is the likely diagnosis?

Accepted Answer

HIV-associated dementia

Answer

Alzheimer's disease

Answer

Major depressive disorder

Answer

Delirium

Question 8

What does Consultation-liaison (C-L) psychiatry involve?

Accepted Answer

Psychiatric illness in medically ill

Answer

Suicidal tendency in psychiatric patients

Answer

Suicidal tendency in medically ill

Answer

Medical illness of psychiatric patients

Question 9

Insane paresis is associated with -

Accepted Answer

Syphilis

Answer

Leishmaniasis

Answer

Yellow fever

Answer

Neisseria meningitidis

Question 10

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

Consultation-Liaison Psychiatry — MCQs

Consultation-Liaison Psychiatry — MCQs

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