Question

Difficulty: MediumBipolar and Related Disorders

When managing patients with bipolar disorder, establishing an appropriate baseline before initiating pharmacotherapy is essential for long-term safety and adverse effect monitoring. Match each psychotropic medication below with its most critical baseline laboratory screening parameters.

  • LithiumThyroid-stimulating hormone (TSH), serum creatinine, and serum calcium
  • ValproateLiver function tests and platelet count
  • CarbamazepineComplete blood count, serum sodium, and HLA-B*1502 screening
  • OlanzapineFasting lipid panel, fasting plasma glucose, and waist circumference

Answer

Lithium matches with TSH/creatinine/calcium; Valproate matches with liver function/platelets; Carbamazepine matches with CBC/sodium/HLA-B*1502; Olanzapine matches with metabolic screening.
Each correct pairing directly aligns the psychotropic medication with its most dangerous or common adverse effect profile, ensuring that pre-existing abnormalities are identified before starting a medication that could exacerbate them.

Step-by-Step Solution

1
Identify the primary mechanism of action, metabolism, and major toxicities associated with each psychotropic medication.
Lithium affects kidneys/thyroid/parathyroid; Valproate is hepatotoxic and suppresses platelets; Carbamazepine causes marrow suppression, SIADH, and dermatologic reactions; Olanzapine causes metabolic syndrome.
Understanding the organ systems most at risk of drug-induced injury directly dictates the necessary baseline monitoring.
2
Pair the identified toxicities with their corresponding baseline screening laboratory tests.
Lithium pairs with renal and endocrine tests (right_1); Valproate pairs with hepatic and coagulation parameters (right_2); Carbamazepine pairs with hematologic, electrolyte, and genetic screens (right_3); Olanzapine pairs with metabolic parameters (right_4).
To ensure a safe baseline is established before exposing the patient to the medication.

Key Concept

Baseline laboratory monitoring for pharmacotherapy in Bipolar Disorder
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