Delirium Management — MCQs
Which first-line conventional drug is commonly used in the treatment of delirium?
Clouding of consciousness is seen in:
The Confusion Assessment Method (CAM) is used for which of the following?
Which of the following accurately describes management of Grade 3 pelvic organ prolapse in an elderly woman who is a poor surgical candidate?
Emergence Delirium is characteristic of?
What is the treatment for extrapyramidal side effects induced by Haloperidol?
A 21-year-old woman incurs a blow to her head from a fall while mountain biking. She then has loss of consciousness for 5 minutes. On examination her deep tendon reflexes are diminished. A head CT scan 6 hours later shows no abnormalities. She recovers over the next week, with no neurologic deficits, but cannot remember this event. During the next year she has irritability, headache, difficulty sleeping, trouble concentrating, and fatigue. Which of the following is the most likely consequence from her injury?
A diabetic patient's fasting blood glucose level is found to be $160 \mathrm{mg} / \mathrm{dL}$. What will you advise the patient regarding non-pharmacological management?
A 50-year-old male presents with cyanosis and is diagnosed with chronic obstructive pulmonary disease (COPD). What is the primary mechanism causing his cyanosis?
Which of the following is the most common cause of reversible dementia in the geriatric population?
Delirium Management Indian Medical PG Practice Questions and MCQs
Question 1: Which first-line conventional drug is commonly used in the treatment of delirium?
- A. Haloperidol (Correct Answer)
- B. Lithium carbonate
- C. Opioids
- D. Selective Serotonin Reuptake Inhibitors (SSRIs)
Explanation: ***Haloperidol*** - **Haloperidol** is a first-generation antipsychotic widely considered the **first-line conventional drug** for managing **agitation and psychotic symptoms** in delirium (particularly in the context of this 2015 exam). - Its efficacy in controlling these symptoms promptly, coupled with its availability in oral, intramuscular, and intravenous forms, makes it a preferred choice, especially in acute settings. - **Note:** Current evidence (post-2018) emphasizes non-pharmacological interventions first, with antipsychotics reserved for severe agitation when non-pharmacological measures fail. *Lithium carbonate* - **Lithium carbonate** is primarily used as a **mood stabilizer** for bipolar disorder, not for acute management of delirium. - It has a narrow therapeutic window and requires **careful monitoring of blood levels** to prevent toxicity, making it unsuitable for acute delirium management. *Opioids* - **Opioids** are mainly used for **pain management** and can actually **exacerbate delirium** due to their sedative and central nervous system depressant effects. - They are not indicated for treating the core symptoms of delirium, such as disorientation, fluctuating consciousness, or psychotic features. *Selective Serotonin Reuptake Inhibitors (SSRIs)* - **SSRIs** are primarily used for the treatment of **depression and anxiety disorders**, and their therapeutic effects take several weeks to manifest. - They are not effective for the immediate management of acute delirium and may even **worsen confusion or agitation** in some delirious patients.
Question 2: Clouding of consciousness is seen in:
- A. Schizophrenia
- B. Delirium (Correct Answer)
- C. Dementia
- D. Depression
Explanation: ***Delirium*** - **Clouding of consciousness**, characterized by reduced clarity of awareness, is a hallmark feature of delirium. - Patients with delirium often experience a fluctuating level of consciousness, disorientation, and impaired attention. *Schizophrenia* - Schizophrenia primarily involves disturbances in **thought processes**, perception, and emotion, such as hallucinations and delusions. - While cognitive deficits may be present, clouding of consciousness in the acute sense is not a primary diagnostic criterion. *Dementia* - Dementia is characterized by a **gradual decline** in cognitive function, including memory, judgment, and language. - Consciousness typically remains clear in dementia, distinguishing it from delirium where consciousness is impaired. *Depression* - Depression is a **mood disorder** with symptoms such as persistent sadness, loss of interest, and changes in sleep or appetite. - While severe depression can lead to psychomotor retardation or cognitive slowing, it does not typically involve the clouding of consciousness seen in delirium.
Question 3: The Confusion Assessment Method (CAM) is used for which of the following?
- A. Schizophrenia
- B. Delirium (Correct Answer)
- C. Dementia
- D. Depression
Explanation: ***Delirium*** - The Confusion Assessment Method (CAM) is a widely used and highly sensitive and specific tool for the rapid identification of **delirium**. - It assesses for acute onset and fluctuating course, inattention, disorganized thinking, and altered level of consciousness. *Schizophrenia* - Schizophrenia is a chronic mental health disorder primarily characterized by **psychosis**, including hallucinations, delusions, and disorganized thought. - While patients with schizophrenia can experience cognitive difficulties, specialized scales like the Positive and Negative Syndrome Scale (PANSS) are used, not the CAM. *Dementia* - Dementia is a gradual and progressive decline in cognitive function, including memory, thinking, and reasoning, severe enough to interfere with daily life. - Tools like the mini-mental state examination (MMSE) or Montreal Cognitive Assessment (MoCA) are used for screening and assessing dementia, not the CAM. *Depression* - Depression is a mood disorder characterized by persistent sadness, loss of interest, and other emotional and physical symptoms. - Assessment tools like the Hamilton Depression Rating Scale (HDRS) or Patient Health Questionnaire-9 (PHQ-9) are used for depression.
Question 4: Which of the following accurately describes management of Grade 3 pelvic organ prolapse in an elderly woman who is a poor surgical candidate?
- A. Bladder sling
- B. Vaginal hysterectomy
- C. Pessary placement (Correct Answer)
- D. Kegel exercises
Explanation: ***Pessary placement*** - **Pessaries** are a less invasive, effective option for **pelvic organ prolapse** management in patients who are **poor surgical candidates**, helping to support prolapsed organs. - They also serve as a good temporary option to improve symptoms before surgical intervention. *Bladder sling* - A **bladder sling** is a surgical procedure used primarily to treat **stress urinary incontinence**, not pelvic organ prolapse. - This option is unsuitable for a patient who is a **poor surgical candidate**. *Vaginal hysterectomy* - A **vaginal hysterectomy** involves surgical removal of the uterus through the vagina, which is a definitive treatment for **uterine prolapse**. - However, surgical interventions are contraindicated for an **elderly woman** who is a **poor surgical candidate** due to potential risks. *Kegel exercises* - **Kegel exercises** are beneficial for strengthening the **pelvic floor muscles** and preventing the progression of early-stage prolapse or improving mild symptoms. - However, they are generally **insufficient** for managing **Grade 3 pelvic organ prolapse**, which requires more robust support.
Question 5: Emergence Delirium is characteristic of?
- A. Midazolam
- B. Thiopentone
- C. Opioids
- D. Ketamine (Correct Answer)
Explanation: ***Ketamine*** - **Emergence delirium**, characterized by vivid dreams, hallucinations, and confusion upon recovery from anesthesia, is a known side effect of **ketamine**, particularly in adults. - This effect is attributed to ketamine's action on **NMDA receptors** and can be attenuated by co-administration of benzodiazepines. *Midazolam* - **Midazolam** is a benzodiazepine often used for sedation and anxiolysis, and it typically causes amnesia and relaxation rather than a delirious state upon emergence. - While it can cause paradoxical agitation in some patients, it does not characteristically lead to emergence delirium similar to ketamine. *Thiopentone* - **Thiopentone** is a short-acting barbiturate used for induction of anesthesia, known for rapid onset and offset, leading to smooth emergence without significant delirium. - Its primary effect is general central nervous system depression, not dissociative anesthesia associated with emergence phenomena. *Opioids* - **Opioids** are potent analgesics that, at higher doses, can cause respiratory depression, nausea, and somnolence; however, they do not characteristically cause emergence delirium. - While they can contribute to postoperative cognitive dysfunction, it is distinct from the dissociative emergence state seen with ketamine.
Question 6: What is the treatment for extrapyramidal side effects induced by Haloperidol?
- A. Barbiturates
- B. SSRIs
- C. Benzodiazepines
- D. Anticholinergic drugs (Correct Answer)
Explanation: ***Anticholinergic drugs (effective treatment)*** - **Anticholinergic medications**, such as **benztropine** or **diphenhydramine**, are the primary treatment for **acute extrapyramidal symptoms (EPS)** like dystonia and parkinsonism induced by antipsychotics like haloperidol. - They work by **blocking muscarinic acetylcholine receptors**, helping to restore the balance between dopamine and acetylcholine in the basal ganglia. *Benzodiazepines (used for anxiety and muscle relaxation)* - While benzodiazepines can offer some relief for **akathisia** (a form of EPS characterized by restlessness) due to their sedative and muscle relaxant properties, they are **not the first-line treatment for other acute EPS** such as dystonia or parkinsonism. - They primarily enhance **GABAergic transmission** and are effective for anxiety and seizure control rather than direct antagonism of EPS mechanisms. *Barbiturates (used as sedative-hypnotic drugs)* - **Barbiturates** are strong central nervous system depressants used for sedation, anesthesia, and seizure control, but are **not indicated for the treatment of EPS**. - Their significant **sedative and addictive potential**, along with a narrow therapeutic index, makes them unsuitable for this purpose. *SSRIs (used for depression and anxiety)* - **SSRIs (Selective Serotonin Reuptake Inhibitors)** are antidepressants that work by increasing serotonin levels in the brain and are used to treat depression, anxiety, and obsessive-compulsive disorder. - They **do not have a direct role** in ameliorating dopamine-acetylcholine imbalance responsible for haloperidol-induced EPS.
Question 7: A 21-year-old woman incurs a blow to her head from a fall while mountain biking. She then has loss of consciousness for 5 minutes. On examination her deep tendon reflexes are diminished. A head CT scan 6 hours later shows no abnormalities. She recovers over the next week, with no neurologic deficits, but cannot remember this event. During the next year she has irritability, headache, difficulty sleeping, trouble concentrating, and fatigue. Which of the following is the most likely consequence from her injury?
- A. Hydrocephalus
- B. Concussion (Correct Answer)
- C. Leukoencephalopathy
- D. Arteriolosclerosis
Explanation: ***Concussion*** - The patient's presentation with **loss of consciousness** after a head injury [2], followed by persistent symptoms like **irritability, headache, difficulty sleeping, trouble concentrating, and fatigue** over the next year, is highly characteristic of **post-concussive syndrome**. - A normal head CT scan is common in concussion, as it primarily involves **functional brain disturbances** rather than structural damage visible on imaging [1]. *Hydrocephalus* - **Hydrocephalus** typically presents with symptoms such as headache, nausea, vision changes, and gait disturbances due to **increased intracranial pressure**. - It usually involves **ventricular enlargement** visible on imaging, which was not seen in this case. *Leukoencephalopathy* - **Leukoencephalopathy** refers to diffuse disease of the **white matter** of the brain, often associated with demyelination or vascular issues. - It would likely present with more profound and progressive neurological deficits, and usually has specific findings on **MRI**. *Arteriolosclerosis* - **Arteriolosclerosis** is a disease of small cerebral arteries, often seen in older individuals with **hypertension** or **diabetes**, and rarely seen in a 21-year-old. - It typically causes symptoms related to reduced blood flow, such as **stroke** or **vascular dementia**, which do not fit this clinical picture.
Question 8: A diabetic patient's fasting blood glucose level is found to be $160 \mathrm{mg} / \mathrm{dL}$. What will you advise the patient regarding non-pharmacological management?
- A. At least 25-35 g of dietary fibre
- B. <30 % of the calories should come from fat (Correct Answer)
- C. Dietary cholesterol <300 mg per day
- D. <2.3 g sodium intake every day
Explanation: ***<30 % of the calories should come from fat*** - Reducing dietary fat intake to less than 30% of total calories is a crucial non-pharmacological strategy for diabetic patients to manage blood glucose levels and prevent cardiovascular complications [1]. - Excess dietary fat, especially saturated and trans fats, can contribute to insulin resistance and weight gain, both of which negatively impact glycemic control [1]. *At least 25-35 g of dietary fibre* - While adequate dietary fiber (typically 25-30g for adults, sometimes up to 35g for men) is beneficial for managing blood glucose, it is generally recommended as a baseline for healthy eating and not the primary or most impactful intervention to address a fasting glucose of 160 mg/dL [1]. - Fiber helps slow glucose absorption and can improve insulin sensitivity, but a specific "at least 25-35g" statement without further context on total caloric intake or other macronutrient distribution might not be the most targeted advice for this specific glucose level [1]. *Dietary cholesterol <300 mg per day* - Limiting dietary cholesterol to less than 300 mg per day is a general recommendation for cardiovascular health, which is particularly important for diabetic patients due to their increased risk of atherosclerosis [2]. - However, for directly addressing a fasting blood glucose of 160 mg/dL, focusing on overall fat intake and carbohydrate quality would have a more immediate impact on glucose control than dietary cholesterol alone. *<2.3 g sodium intake every day* - Restricting sodium intake to less than 2.3 g per day is recommended for managing hypertension and reducing cardiovascular risk, which is often comorbid with diabetes [2]. - While important for overall health in diabetic patients, this recommendation does not directly target blood glucose control and would not be the primary non-pharmacological advice for a fasting glucose of 160 mg/dL.
Question 9: A 50-year-old male presents with cyanosis and is diagnosed with chronic obstructive pulmonary disease (COPD). What is the primary mechanism causing his cyanosis?
- A. Low cardiac output
- B. Carbon monoxide poisoning
- C. Right-to-left shunt
- D. Chronic hypoxemia (Correct Answer)
Explanation: ***Chronic hypoxemia*** - **Chronic hypoxemia** is a hallmark of severe COPD, leading to insufficient oxygen in the arterial blood, which is the direct cause of cyanosis. [1] - The body compensates for ongoing hypoxemia by increasing **red blood cell production (polycythemia)**, which, when deoxygenated, becomes more visible as a bluish discoloration of the skin and mucous membranes. *Low cardiac output* - While low cardiac output can impair tissue oxygen delivery, it typically presents with signs of **poor perfusion** (e.g., cool extremities, altered mental status) rather than primary cyanosis in the absence of severe respiratory compromise. - In COPD, the primary issue is impaired gas exchange in the lungs, not usually a profound cardiac dysfunction leading to cyanosis, unless comorbid heart failure is present. *Carbon monoxide poisoning* - **Carbon monoxide (CO)** binds to hemoglobin with a much higher affinity than oxygen, forming carboxyhemoglobin, which is bright red. [3] - This typically leads to a **cherry-red appearance** rather than cyanosis, even in the presence of severe tissue hypoxia. [2] *Right-to-left shunt* - A **right-to-left shunt** allows deoxygenated blood to bypass the lungs and enter the systemic circulation, causing hypoxemia and cyanosis. [1] - While shunting can occur in severe COPD (e.g., due to ventilation-perfusion mismatch), the primary mechanism for generalized chronic cyanosis in COPD is the overall failure of the lungs to adequately oxygenate blood, classifying it as **chronic hypoxemia** rather than a specific anatomical shunt.
Question 10: Which of the following is the most common cause of reversible dementia in the geriatric population?
- A. Depression (Correct Answer)
- B. Normal Pressure Hydrocephalus
- C. Hypothyroidism
- D. Vitamin B12 deficiency
Explanation: The correct answer is **Depression**. In the geriatric population, depression often presents with cognitive impairment, memory loss, and poor concentration, a clinical entity known as **Pseudodementia**. It is the most common cause of reversible cognitive decline [1]. Unlike true dementia (e.g., Alzheimer’s), patients with pseudodementia typically provide "I don't know" answers during testing, appear distressed by their deficits, and show significant improvement with antidepressant therapy or ECT. Analysis of Incorrect Options: **Normal Pressure Hydrocephalus (NPH):** Characterized by the triad of gait ataxia, urinary incontinence, and dementia ("Wet, Wobbly, and Wacky"). While reversible via a ventriculoperitoneal shunt, it is statistically less common than depression [1]. **Hypothyroidism:** Can cause cognitive slowing and "myxedema madness." While a standard part of the dementia workup (checking TSH), it is a less frequent cause of isolated reversible dementia compared to psychiatric illness. **Vitamin B12 Deficiency:** Leads to Subacute Combined Degeneration of the spinal cord and cognitive changes. While common in the elderly due to atrophic gastritis, it ranks below depression in prevalence as a primary cause of reversible cognitive impairment [1].
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