Match each clinical vignette describing a patient with a bipolar spectrum illness to the most appropriate next best step in management or pharmacologic rationale.
- A 28-year-old man on bipolar maintenance therapy presents with ataxia, confusion, and a coarse tremor after starting a new medication for hypertension. Serum drug concentration is 2.1 mEq/L.Discontinue the offending thiazide diuretic, administer intravenous hydration, and prepare for possible hemodialysis due to severe neurotoxicity.
- A 24-year-old woman with a history of recurrent depression presents with severe psychomotor agitation, pressured speech, and grandiosity three weeks after initiating citalopram.Discontinue the selective serotonin reuptake inhibitor immediately due to treatment-emergent mania, and initiate an antimanic agent.
- A 32-year-old pregnant woman at 7 weeks gestation requires hospital admission for acute, severe mania with psychotic features. She has no prior psychiatric medication history.Initiate an antipsychotic such as haloperidol to manage acute agitation; avoid teratogenic mood stabilizers.
- A 40-year-old man with bipolar I disorder requires maintenance pharmacotherapy but has a history of severe hepatic steatosis and markedly elevated transaminases.Initiate lithium, as it is renally excreted and avoids hepatic metabolism, making it safe for patients with severe liver disease.
- A 35-year-old woman with bipolar disorder presents with a diffuse, painful vesicular rash and mucosal ulcerations two weeks after her medication dosage was rapidly doubled.Discontinue lamotrigine immediately and admit for supportive care due to the development of Stevens-Johnson syndrome.
Answer
The correct matches align each unique clinical scenario with its definitive management: lithium toxicity requires hydration/hemodialysis; SSRI-induced mania requires stopping the SSRI; first-trimester mania is treated with antipsychotics; hepatic impairment necessitates renally cleared lithium; and lamotrigine-induced rash requires immediate cessation for Stevens-Johnson syndrome.
Each vignette represents a classic, high-yield clinical scenario in bipolar disorder management requiring a specific targeted intervention. Lithium is renally cleared and subject to thiazide toxicity. Antidepressants like citalopram can trigger manic switches and must be stopped. First-trimester mania is managed with antipsychotics rather than teratogenic mood stabilizers. Liver disease precludes hepatically cleared drugs like valproate, favoring lithium. Rapid lamotrigine titration causes Stevens-Johnson syndrome.
Step-by-Step Solution
Key Concept
Management of bipolar disorder requires tailoring pharmacotherapy to patient-specific factors, recognizing drug-drug interactions (e.g., lithium and thiazides), managing unique toxicities (e.g., lamotrigine-induced Stevens-Johnson syndrome), and avoiding antidepressant monotherapy.