USMLE Step 1 Question of the day #74

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Questions:

Psychiatry
1. _______ is a mood stabilizer used in bipolar disorders that is treated like Na at the proximal tubule.

Immunology
2. Which cell type is the only cell that does not have MHC I on its surface?

Reproductive
3. _______ are a Congenital Disruption that involves fibrous bands that form after partial ruptures of the amniotic sac and cause damage after normal development has occurred.

Respiratory
4. Which sinus is most affected in Rhinosinusitis in adults?

Pharmacology
5. How do Triglyceride levels change following the administration of Bile Acid Resins (Antihyperlipidemics)?

Answers:

1. _______ is a mood stabilizer used in bipolar disorders that is treated like Na at the proximal tubule.
A: Lithium
Hence it is influenced by GFR and plasma volume changes and requires a patient with good kidney function.

2. Which cell type is the only cell that does not have MHC I on its surface?
A: Mature RBCs

3. _______ are a Congenital Disruption that involves fibrous bands that form after partial ruptures of the amniotic sac and cause damage after normal development has occurred.
A: Amniotic Bands
fibrous bands

4. Which sinus is most affected in Rhinosinusitis in adults?
A: Maxillary
Rhinosinusitis

5. How do Triglyceride levels change following the administration of Bile Acid Resins (Antihyperlipidemics)?
A: Slight increase
All other antihyperlipidemics decrease triglycerides or don’t have an effect.

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