Bipolar disorder US Medical PG Practice Questions and MCQs
Practice US Medical PG questions for Bipolar disorder. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Bipolar disorder US Medical PG Question 1: A 35-year-old man is brought to the emergency department by his wife. She was called by his coworkers to come and pick him up from work after he barged into the company’s board meeting and was being very disruptive as he ranted on about all the great ideas he had for the company. When they tried to reason with him, he became hostile and insisted that he should be the CEO as he knew what was best for the future of the company. The patient’s wife also noted that her husband has been up all night for the past few days but assumed that he was handling a big project at work. The patient has no significant past medical or psychiatric history. Which of the following treatments is most likely to benefit this patient’s condition?
- A. Antidepressants
- B. Valproic acid (Correct Answer)
- C. Haloperidol
- D. Psychotherapy
- E. Clozapine
Bipolar disorder Explanation: ***Valproic acid***
- This patient presents with symptoms highly suggestive of a **manic episode**, including grandiosity (believing he should be CEO), decreased need for sleep (up all night for days), pressured speech (ranting), and impulsivity with poor judgment (disruptive behavior at a board meeting).
- **Valproic acid** is a **first-line, guideline-recommended mood stabilizer** for acute mania. It is particularly effective for managing the core symptoms of mania including mood elevation, irritability, and impulsivity.
- It has a relatively rapid onset of action and a favorable side effect profile compared to typical antipsychotics, making it an excellent choice for initial management of acute mania in the emergency setting.
*Antidepressants*
- Administering **antidepressants** during a manic or hypomanic episode can exacerbate symptoms, potentially leading to a rapid cycling pattern or worsening mania.
- Antidepressants are primarily used for depressive episodes in bipolar disorder, typically in conjunction with a mood stabilizer, never as monotherapy in a patient presenting with mania.
*Haloperidol*
- **Haloperidol** is a typical antipsychotic that can be used for acute agitation in mania, but it does not address the underlying mood dysregulation.
- While it may help with immediate behavioral control, mood stabilizers like valproic acid or lithium are preferred as primary treatments because they target the core pathophysiology of bipolar disorder.
- Haloperidol also has a higher risk of extrapyramidal symptoms and does not prevent future mood episodes.
*Psychotherapy*
- **Psychotherapy** is a crucial component of long-term management for bipolar disorder but is not effective as a sole treatment for acute mania.
- Patients in acute mania are often too agitated, impulsive, and lack sufficient insight to meaningfully engage in therapeutic interventions.
- Psychotherapy should be initiated after mood stabilization with pharmacotherapy.
*Clozapine*
- **Clozapine** is an atypical antipsychotic reserved for treatment-resistant schizophrenia or treatment-resistant bipolar disorder, particularly with prominent psychotic features that have not responded to multiple other medications.
- Given its significant side effect profile, including agranulocytosis requiring regular blood monitoring, it is not a first-line or even second-line treatment for an initial presentation of mania.
- This patient has no psychiatric history and requires standard first-line treatment, not a medication reserved for refractory cases.
Bipolar disorder US Medical PG Question 2: A 58-year-old man with a past medical history of diabetes, hypertension, and hyperlipidemia was brought into the emergency department by his wife after she observed him go without sleep for several days and recently open and max out several credit cards. She also reports that he has quit his bartending job and has been excessively talkative and easily annoyed for the last several weeks. The patient has no previous psychiatric history. Routine medical examination, investigations, and toxicology rule out a medical cause or substance abuse. Lab results are consistent with chronically impaired renal function. What is the single best treatment for this patient?
- A. Valproic acid (Correct Answer)
- B. Lithium
- C. Gabapentin
- D. Pregabalin
- E. Lamotrigine
Bipolar disorder Explanation: ***Valproic acid***
- This patient presents with symptoms highly suggestive of **acute mania (Bipolar I disorder)**, including decreased need for sleep, impulsivity (maxing out credit cards), grandiosity (quitting job), pressured speech (excessively talkative), and irritability. **Valproic acid** is a first-line treatment for **acute mania**, particularly when kidney function is impaired.
- Given the patient's **chronically impaired renal function**, valproic acid is preferred over lithium as its excretion is primarily hepatic, minimizing the risk of drug accumulation and toxicity in the context of renal impairment.
*Lithium*
- While **lithium** is a highly effective mood stabilizer for bipolar disorder, it is predominantly cleared renally.
- The patient's **impaired renal function** would significantly increase the risk of **lithium toxicity**, making it a less safe and unsuitable choice in this scenario.
*Gabapentin*
- **Gabapentin** is an anticonvulsant primarily used for neuropathic pain and seizure disorders, sometimes used off-label as an adjunct for anxiety or sleep.
- It is **not a primary mood stabilizer** and lacks sufficient evidence for monotherapy treatment of acute mania in bipolar disorder.
*Pregabalin*
- **Pregabalin**, similar to gabapentin, is an anticonvulsant and neuropathic pain medication.
- It is **not indicated as a first-line treatment** for acute mania due to insufficient efficacy as a mood stabilizer.
*Lamotrigine*
- **Lamotrigine** is an effective mood stabilizer, particularly for the **depressive phases of bipolar disorder**, and for maintenance therapy.
- However, it has limited efficacy in treating **acute manic episodes**, making it less suitable for the patient's current presentation.
Bipolar disorder US Medical PG Question 3: A 33-year-old woman is brought to the physician by her husband because of persistent sadness for the past 2 months. During this period, she also has had difficulty sleeping and an increased appetite. She had similar episodes that occurred 2 years ago and 9 months ago that each lasted for 4 months. Between these episodes, she reported feeling very energetic and rested after 3 hours of sleep. She often went for long periods of time without eating. She works as a stock market trader and received a promotion 5 months ago. She regularly attends yoga classes on the weekends with her friends. On mental status examination, she has a blunted affect. She denies suicidal thoughts and illicit drug use. Which of the following is the most likely diagnosis?
- A. Major depressive disorder with seasonal pattern
- B. Persistent depressive disorder
- C. Bipolar II disorder (Correct Answer)
- D. Major depressive disorder with atypical features
- E. Cyclothymic disorder
Bipolar disorder Explanation: ***Bipolar II disorder***
- The patient exhibits recurrent episodes of **major depression** (sadness, sleep difficulties, increased appetite) interspersed with periods of **hypomania** (energetic, reduced need for sleep, long periods without eating, successful work performance with promotion)
- This pattern is characteristic of **Bipolar II disorder**: major depressive episodes plus at least one hypomanic episode
- No evidence of **frank mania** (e.g., psychosis, severe impairment requiring hospitalization) is present, which distinguishes this from Bipolar I disorder
*Major depressive disorder with seasonal pattern*
- While the patient presents with depressive symptoms, the episodes of **hypomania** (increased energy, decreased need for sleep) rule out unipolar depression
- The history of episodes at various times (2 years ago, 9 months ago, current) does not fit a **seasonal pattern**
- The **hypomanic phases** between depressive episodes are inconsistent with any form of major depressive disorder
*Persistent depressive disorder*
- This condition involves **chronic depressive symptoms** lasting at least 2 years, but typically less severe than major depressive episodes
- The presence of distinct, severe **major depressive episodes** and recurrent **hypomanic periods** contradicts this diagnosis
- Persistent depressive disorder does not include hypomania or mood elevation
*Major depressive disorder with atypical features*
- Atypical features include **increased appetite**, **hypersomnia**, leaden paralysis, interpersonal rejection sensitivity, and mood reactivity
- While increased appetite is present during depressive phases, the alternating periods of **hypomania** exclude this from being major depressive disorder
- Any form of major depressive disorder is ruled out by the presence of hypomanic episodes
*Cyclothymic disorder*
- Cyclothymic disorder involves numerous periods of **hypomanic symptoms** and **depressive symptoms** for at least 2 years, but symptoms do not meet full criteria for major depressive or hypomanic episodes
- This patient explicitly experiences **major depressive episodes** (persistent sadness, neurovegetative symptoms lasting 4 months), which exceed the threshold for cyclothymia
- The severity and duration of depressive episodes make Bipolar II disorder the correct diagnosis
Bipolar disorder US Medical PG Question 4: A 24-year-old woman is brought to the emergency department by her roommate because of bizarre behavior and incoherent talkativeness for the past week. Her roommate reports that the patient has been rearranging the furniture in her room at night and has ordered a variety of expensive clothes online. The patient says she feels “better than ever” and has a lot of energy. She had absence seizures as a child and remembers that valproate had to be discontinued because it damaged her liver. She has been otherwise healthy and is not taking any medication. She is sexually active with her boyfriend. She does not smoke, drink alcohol, or use illicit drugs. Physical and neurologic examinations show no abnormalities. Her pulse is 78/min, respirations are 13/min, and blood pressure is 122/60 mm Hg. Mental status examination shows pressured and disorganized speech, flight of ideas, lack of insight, and affective lability. Which of the following is the best initial step before deciding on a therapy for this patient's condition?
- A. Obtain CBC, liver function studies, and beta-HCG
- B. Obtain TSH, β-hCG, and serum creatinine concentration (Correct Answer)
- C. Obtain BMI, HbA1c, lipid levels, and prolactin levels
- D. Perform urine drug testing and begin cognitive behavior therapy
- E. Assess for suicidal ideation and obtain echocardiography
Bipolar disorder Explanation: ***Obtain TSH, β-hCG, and serum creatinine concentration***
- This patient presents with symptoms highly suggestive of **mania** (bizarre behavior, incoherent talkativeness, grandiosity, increased energy, pressured speech, flight of ideas). Before initiating treatment, it's crucial to rule out other medical conditions that can **mimic mania**, such as **hyperthyroidism** (TSH), **pregnancy** (β-hCG), or **kidney dysfunction** (creatinine), which can impact medication choice and dosage.
- TSH levels are essential as **hyperthyroidism** can cause symptoms like agitation, rapid speech, and increased energy, mimicking mania. A **pregnancy test (β-hCG)** is critical for women of childbearing age to ensure that any potential psychiatric medications are safe for both the mother and fetus. **Serum creatinine** helps assess kidney function, which is important for dosing many psychotropic medications eliminated by the kidneys.
*Obtain CBC, liver function studies, and beta-HCG*
- While a **β-hCG** is appropriate, **CBC** and **liver function studies (LFTs)** are typically obtained if there are specific concerns for anemia, infection, or liver damage (which the patient mentions about valproate in childhood, but there's no immediate indication for current LFTs before diagnosis confirmation).
- Although LFTs are important for certain antidepressant or mood stabilizer monitoring (e.g., valproate, carbamazepine), they are not the most immediate initial screen for ruling out medical mimics of mania in this context as **TSH** and **renal function** are more critical.
*Obtain BMI, HbA1c, lipid levels, and prolactin levels*
- These tests are important for **monitoring long-term metabolic side effects** of certain antipsychotics and mood stabilizers, but they are not the best initial steps for ruling out acute medical causes of manic symptoms.
- **BMI, HbA1c, and lipid levels** are typically assessed *after* diagnosis and initiation of treatment to establish a baseline for future metabolic monitoring. **Prolactin levels** might be checked if there is concern for hyperprolactinemia, which is a side effect of some antipsychotics, but not usually a cause of acute mania.
*Perform urine drug testing and begin cognitive behavior therapy*
- While **urine drug testing** is often performed in acute psychiatric presentations to rule out substance-induced mania, it is not listed as the *best initial step* alone, as other medical conditions also need to be ruled out concurrently.
- **Cognitive behavioral therapy (CBT)** is not an appropriate initial treatment for acute mania due to the patient's severe symptoms, lack of insight, and disorganized thought processes. **Pharmacotherapy** is the cornerstone of acute mania management.
*Assess for suicidal ideation and obtain echocardiography*
- Assessing for **suicidal ideation** is crucial in every psychiatric evaluation, but it is a mental status component rather than a diagnostic lab test. While important for patient safety, it doesn't rule out medical mimics of mania.
- **Echocardiography** is not indicated in the initial work-up of acute mania unless there are specific cardiac symptoms or a history that suggests underlying heart disease.
Bipolar disorder US Medical PG Question 5: A 21-year-old female is brought to the emergency department by her roommate. Her roommate says that the patient has been acting “strangely” for the past 10 days. She has noticed that the patient has been moving and talking on the phone at all hours of the night. She doesn’t think that the patient sleeps more than one to two hours a night. She also spends hours pacing up and down the apartment, talking about “trying to save the world.” She also notices that the patient has been speaking very fast. When asking the patient if anything seems different, the patient denies anything wrong, only adding that, “she’s made great progress on her plans." The patient said she has felt like this on one occasion 2 years ago, and she recalled being hospitalized for about 2 weeks. She denies any history of depression, although she said about a year ago she had no energy and had a hard time motivating herself to go to class and see her friends for months. She denies hearing any voices or any visual hallucinations. What is the most likely diagnosis in this patient?
- A. Bipolar II disorder
- B. Bipolar I disorder (Correct Answer)
- C. Major depressive disorder
- D. Persistent Depressive Disorder
- E. Schizoaffective disorder
Bipolar disorder Explanation: ***Bipolar I disorder***
- The patient exhibits clear symptoms of a **manic episode**, including decreased need for sleep, grandiosity ("saving the world"), pressured speech, and increased goal-directed activity, which are characteristic of Bipolar I disorder.
- The history of a prior hospitalization for similar symptoms ("felt like this on one occasion 2 years ago, and she recalled being hospitalized") and self-reported depressive episodes ("she had no energy... for months") further supports the diagnosis of Bipolar I disorder, which requires at least one manic episode.
*Bipolar II disorder*
- Bipolar II disorder involves at least one **hypomanic episode** and at least one major depressive episode.
- The severity of the patient's current symptoms, including significant functional impairment and a prior hospitalization for similar symptoms, indicates a **manic episode**, not a hypomanic episode.
*Major depressive disorder*
- This diagnosis is characterized solely by **major depressive episodes** without any history of manic or hypomanic episodes.
- The patient's presentation clearly includes symptoms of **mania**, ruling out a sole diagnosis of major depressive disorder.
*Persistent Depressive Disorder*
- This disorder is characterized by **chronic, mild depressive symptoms** lasting at least two years.
- The patient's current presentation of severe manic symptoms and past episodes of clear mania differentiates her condition from persistent depressive disorder.
*Schizoaffective disorder*
- Schizoaffective disorder involves a period of uninterrupted illness during which there is a **major mood episode (depressive or manic) concurrent with symptoms of schizophrenia**, such as hallucinations or delusions, for at least two weeks in the absence of a major mood episode.
- The patient **denies hearing any voices or visual hallucinations**, making schizoaffective disorder less likely; her symptoms are primarily mood-related.
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