Treatment-Resistant Psychosis — MCQs
A 72 year old lady is severely depressed. For the past 2 days she has suicidal thoughts with an actual intent to die. Which of the following is best suitable to alleviate the symptoms?
Myocarditis is a side effect of which drug(s)?
A young patient with schizophrenia is resistant to treatment with conventional antipsychotic medications. Which drug is most preferred?
According to DSM-5 criteria, symptoms of brief psychotic disorder must resolve within what time period to differentiate it from longer-term psychotic conditions like schizophreniform disorder?
What is the most reliable marker of conversion to psychosis in high-risk individuals?
Which of the following is not a feature of psychosis?
What is the treatment of choice for a gonococcal infection that is resistant to penicillin?
Why is a regimen of four drugs recommended for a TB patient on the first visit?
Most reliable marker of conversion to psychosis in high-risk individuals:
A patient develops an infection of methicillin resistant Staphylococcus aureus. All of the following can be used to treat this infection except
Treatment-Resistant Psychosis Indian Medical PG Practice Questions and MCQs
Question 1: A 72 year old lady is severely depressed. For the past 2 days she has suicidal thoughts with an actual intent to die. Which of the following is best suitable to alleviate the symptoms?
- A. ECT (Correct Answer)
- B. Selegiline
- C. Haloperidol + Chlorpromazine
- D. Amitriptyline
Explanation: ***ECT (Electroconvulsive Therapy)*** - **ECT** is the most effective and rapid treatment for severe depression, especially when associated with active **suicidal ideation** and intent. - Its quick onset of action (often within days) makes it vital in situations requiring urgent symptom alleviation to ensure patient safety. - **First-line treatment** for geriatric depression with suicidal risk and when rapid response is needed. *Selegiline* - **Selegiline** is a monoamine oxidase inhibitor (MAOI) used for depression and Parkinson's disease, but its antidepressant effects are not immediate. - It would not sufficiently address the patient's acute suicidal intent due to its slower therapeutic onset (several weeks). *Haloperidol + Chlorpromazine* - This combination consists of **antipsychotics**, primarily used for conditions with psychotic features or severe agitation but not as a primary treatment for severe depression with suicidal ideation. - While they might provide some sedation, they do not treat the underlying depressive disorder effectively and rapidly enough to resolve acute suicidal intent. *Amitriptyline* - **Amitriptyline** is a tricyclic antidepressant (TCA) that can be effective for depression but has a delayed onset of action (2-4 weeks). - **Highly contraindicated in suicidal patients** due to its extreme lethality in overdose (cardiotoxic effects). - Its slow therapeutic effect would not be appropriate for an urgent situation involving active suicidal thoughts with intent.
Question 2: Myocarditis is a side effect of which drug(s)?
- A. clozapine (Correct Answer)
- B. aripiprazole
- C. olanzapine
- D. chlorpromazine
Explanation: ***Clozapine*** - **Clozapine** is an atypical antipsychotic known to cause several serious side effects, including **myocarditis**, particularly during the initial weeks of treatment. - Patients on clozapine must be monitored for symptoms of myocarditis, such as **tachycardia**, **fever**, chest pain, and fatigue. *Aripiprazole* - **Aripiprazole** is generally considered to have a favorable cardiovascular safety profile compared to other antipsychotics. - While it can cause some cardiovascular side effects like **orthostatic hypotension**, **myocarditis** is not a commonly associated side effect. *Olanzapine* - **Olanzapine** is associated with metabolic side effects such as weight gain, dyslipidemia, and hyperglycemia. - Although it can rarely cause other cardiovascular issues like **QT prolongation**, **myocarditis** is not a characteristic adverse effect. *Chlorpromazine* - **Chlorpromazine** is a first-generation antipsychotic often linked to **QT prolongation** and **orthostatic hypotension**. - While it can have cardiovascular effects, **myocarditis** is not typically listed as one of its prominent or common adverse reactions.
Question 3: A young patient with schizophrenia is resistant to treatment with conventional antipsychotic medications. Which drug is most preferred?
- A. Haloperidol
- B. Olanzapine
- C. Clozapine (Correct Answer)
- D. Risperidone
Explanation: ***Clozapine*** - **Clozapine** is the drug of choice for **treatment-resistant schizophrenia** or patients who are **intolerant to conventional antipsychotics**. - Its unique efficacy often comes with a risk of **agranulocytosis**, requiring regular **blood monitoring**. *Olanzapine* - While an effective **atypical antipsychotic**, it is not specifically indicated for **treatment-resistant cases** in the same way as clozapine. - It carries a risk of significant **metabolic side effects**, such as weight gain and dyslipidemia. *Haloperidol* - This is a **first-generation (conventional) antipsychotic** and would be unsuitable for a patient described as **intolerant to conventional antipsychotics**. - It is associated with a high incidence of **extrapyramidal symptoms (EPS)** and **tardive dyskinesia**. *Risperidone* - As an **atypical antipsychotic**, it is a good first-line option but is not typically reserved for **treatment-resistant schizophrenia** or those with conventional antipsychotic intolerance. - It has a higher propensity for **hyperprolactinemia** compared to other atypical antipsychotics.
Question 4: According to DSM-5 criteria, symptoms of brief psychotic disorder must resolve within what time period to differentiate it from longer-term psychotic conditions like schizophreniform disorder?
- A. 1 week
- B. 3 weeks
- C. 2 weeks
- D. 1 month (Correct Answer)
Explanation: ***1 month*** - According to **DSM-5 criteria**, brief psychotic disorder is characterized by symptoms lasting more than **1 day** but less than **1 month**. - If psychotic symptoms persist for **1 month or longer**, it indicates a different diagnosis, such as schizophreniform disorder or schizophrenia, requiring further evaluation. *1 week* - While psychotic symptoms may be present for 1 week in brief psychotic disorder, this duration is within the disorder's diagnostic window but not its defining upper limit. - The key differentiator for brief psychotic disorder is that symptoms resolve within **1 month**. *2 weeks* - Similar to 1 week, 2 weeks is a duration that can occur within brief psychotic disorder, but it does not represent the minimum duration that distinguishes it from longer-term conditions. - The crucial threshold for duration in brief psychotic disorder is **less than 1 month**. *3 weeks* - Three weeks also falls within the diagnostic duration for brief psychotic disorder. - The essential criteria specify that psychotic symptoms must last **less than 1 month** to be classified as brief psychotic disorder.
Question 5: What is the most reliable marker of conversion to psychosis in high-risk individuals?
- A. Social withdrawal
- B. Cognitive decline
- C. Basic symptoms (Correct Answer)
- D. Sleep disruption
Explanation: ***Basic symptoms*** - **Basic symptoms** (BS) are self-experienced, subtle disturbances in mental processes that are considered the most reliable predictors of conversion to psychosis in high-risk individuals. - They reflect early, subclinical alterations in information processing and are often reported before the emergence of more overt psychotic symptoms. *Social withdrawal* - While **social withdrawal** is a common prodromal symptom of psychosis, it is not as specific or reliable as basic symptoms for predicting conversion. - It can be present in various mental health conditions, including depression and anxiety, and may not directly indicate an impending psychotic episode. *Cognitive decline* - **Cognitive decline** can be a feature of the prodromal phase of psychosis but is often measured using objective neuropsychological tests and may not be consistently reported by individuals as a subjective experience in the same way as basic symptoms. - Its predictive power might be lower compared to the direct self-reported nature of basic symptoms. *Sleep disruption* - **Sleep disruption** is a frequent symptom in individuals at high risk for psychosis and can exacerbate other symptoms. - However, it is a non-specific symptom that is common across a wide range of psychiatric disorders and lacks the diagnostic precision of basic symptoms for predicting conversion to psychosis.
Question 6: Which of the following is not a feature of psychosis?
- A. Loss of insight
- B. Preserved contact with reality (Correct Answer)
- C. Personality disturbances
- D. Presence of delusions
Explanation: ***Preserved contact with reality*** - Psychosis is fundamentally characterized by a **loss of contact with reality**, making this option a defining non-feature of the condition. - Individuals experiencing psychosis often have profound difficulties distinguishing between what is real and what is not. *Loss of insight* - **Lack of insight** into one's own mental illness is a hallmark feature of psychosis, meaning the affected individual may not recognize their thoughts or perceptions as abnormal. - This symptom contributes to the difficulty in engaging individuals with psychosis in treatment. *Presence of delusions* - **Delusions** are fixed, false beliefs that are resistant to reason or evidence, and they are a core positive symptom of psychosis. - These beliefs are often bizarre and can significantly impair an individual's functioning and perception of reality. *Personality disturbances* - While not a primary diagnostic criterion, **personality disturbances** can be associated with psychotic disorders. - Changes in personality, mood, and behavior may occur as a result of the psychotic experience or the underlying illness.
Question 7: What is the treatment of choice for a gonococcal infection that is resistant to penicillin?
- A. Penicillin
- B. Ceftazidime
- C. Ceftriaxone (Correct Answer)
- D. Spectinomycin
Explanation: ***Ceftriaxone*** - **Ceftriaxone** is the recommended first-line treatment for uncomplicated gonococcal infections, especially given increasing resistance to other antibiotics like penicillin. - It is a **third-generation cephalosporin** that targets the bacterial cell wall synthesis effectively. *Penicillin* - **Penicillin** is no longer the recommended treatment for gonorrhea due to widespread resistance, primarily mediated by **beta-lactamase production** by *Neisseria gonorrhoeae*. - Treating with penicillin when resistance is present would lead to treatment failure and continued transmission. *Ceftazidime* - **Ceftazidime** is a third-generation cephalosporin with activity against gram-negative organisms. - However, its activity against *Neisseria gonorrhoeae* is not considered first-line or superior to ceftriaxone, which has better pharmacokinetic properties for treating gonorrhea. *Spectinomycin* - **Spectinomycin** is an alternative treatment for gonococcal infections, particularly in individuals with severe allergy to cephalosporins or in regions where ceftriaxone resistance is emerging. - However, it is not the treatment of choice in regions where ceftriaxone is effective and available.
Question 8: Why is a regimen of four drugs recommended for a TB patient on the first visit?
- A. To prevent emergence of drug-resistant strains (Correct Answer)
- B. To reduce bacterial load effectively
- C. To minimize treatment duration
- D. None of the options
Explanation: ***To prevent emergence of drug-resistant strains*** - Using a **four-drug regimen** at the initial stage significantly reduces the likelihood of **Mycobacterium tuberculosis** developing resistance to any single drug. - This strategy ensures that even if a small number of bacteria are naturally resistant to one drug, the other drugs will still be effective in killing them, preventing the proliferation of **resistant strains**. *To minimize treatment duration* - While a multi-drug regimen is effective, its primary goal is not to minimize treatment duration but rather to ensure **eradication of the infection** and prevent resistance. - Treatment duration is determined by the need to kill both actively multiplying and dormant bacteria, which typically takes several months even with multiple drugs. *To reduce bacterial load effectively* - Reducing bacterial load is certainly a goal of TB treatment, but the use of four drugs is specifically aimed at achieving this while simultaneously preventing **drug resistance**. - A single effective drug could reduce bacterial load, but it would quickly lead to the emergence of resistant bacteria, making the long-term goal of **cure** impossible. *None of the options* - This option is incorrect because the primary reason for a **four-drug regimen** in TB treatment is indeed to prevent the emergence of **drug-resistant strains**.
Question 9: Most reliable marker of conversion to psychosis in high-risk individuals:
- A. Sleep disruption
- B. Cognitive decline
- C. Basic symptoms (Correct Answer)
- D. Social withdrawal
Explanation: ***Basic symptoms*** - **Basic symptoms** (BS) are self-experienced, subtle, subjective disturbances of thought, perception, language, attention, and motor control that represent the earliest detectable signs of psychosis risk. - They are considered **highly specific** to schizophrenia spectrum disorders and show good predictive validity for conversion to psychosis, particularly when persistent. - Basic symptoms reflect direct manifestations of underlying neuropathological processes and can precede full-blown psychotic symptoms by months to years. - Among the options provided, they represent the **most direct and specific marker** related to emerging psychotic processes. *Sleep disruption* - While **sleep disruption** is common in individuals at risk for psychosis and can exacerbate symptoms, it is **non-specific** and occurs across multiple psychiatric and medical conditions. - Sleep disturbances lack the specificity needed to reliably predict conversion to psychosis. *Cognitive decline* - **Cognitive deficits** (attention, memory, executive function) are observed in high-risk individuals and can precede psychosis. - However, cognitive changes are influenced by multiple factors (depression, anxiety, substance use) and are **less specific** than subjective perceptual and cognitive disturbances of basic symptoms. *Social withdrawal* - **Social withdrawal** is a prodromal symptom reflecting declining social functioning, but it is a **broad behavioral change** that can occur in depression, anxiety, and personality disorders. - It lacks the specificity and direct connection to psychotic processes that characterize basic symptoms.
Question 10: A patient develops an infection of methicillin resistant Staphylococcus aureus. All of the following can be used to treat this infection except
- A. Cotrimoxazole
- B. Ciprofloxacin
- C. Cefaclor (Correct Answer)
- D. Vancomycin
Explanation: ***Cefaclor*** - **Cefaclor** is a second-generation **cephalosporin**, which, like all beta-lactam antibiotics, is ineffective against **MRSA** because **MRSA** produces an altered penicillin-binding protein (PBP2a) encoded by the **mecA** gene. - This altered **PBP2a** has a low affinity for **beta-lactam antibiotics**, rendering them inactive. *Cotrimoxazole* - **Cotrimoxazole** (trimethoprim/sulfamethoxazole) is a commonly used and effective oral antibiotic for treating **MRSA** infections, particularly in outpatient settings. - It inhibits **folate synthesis** in bacteria, an essential pathway for their growth and replication. *Ciprofloxacin* - **Ciprofloxacin** is a **fluoroquinolone antibiotic** that can be used to treat certain **MRSA** infections, although resistance can be an issue. [2] - It works by inhibiting bacterial **DNA gyrase** and **topoisomerase IV**, crucial enzymes for DNA replication. [2] *Vancomycin* - **Vancomycin** is a **glycopeptide antibiotic** that is a first-line treatment for serious **MRSA** infections, especially in hospitalized patients. [1] - It works by inhibiting **bacterial cell wall synthesis** at a different site than beta-lactams, making it effective against **MRSA**. [1]
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