A -week-old infant is brought to the emergency room in coma with retinal hemorrhages and severe pallor He was born at home and was first seen by a physician at days of age and placed on amoxicillin for otitis media His diet is breast milk Diagnostic tests should include all of the following EXCEPT

Correct Answer: D

Rationale: Lumbar puncture is contraindicated in cases of severe coagulopathy or intracranial hemorrhage, as it could worsen the condition

Correct Answer: C

Rationale: Persistent Tic Disorder involves motor or vocal tics that last for more than a year. Tourette's Disorder requires both motor and vocal tics, while Provisional Tic Disorder lasts less than a year. Sydenham Chorea is typically associated with rheumatic fever.

Correct Answer: B

Rationale: Diarrhea leads to metabolic acidosis with a normal anion gap due to excessive bicarbonate loss in stool. This type of acidosis is known as hyperchloremic acidosis, where chloride replaces lost bicarbonate.

Correct Answer: D

Rationale: Nasal corticosteroids, such as budesonide, are the most effective treatment for persistent allergic rhinitis, reducing inflammation and nasal symptoms more effectively than antihistamines or leukotriene inhibitors.

Correct Answer: A

Rationale: Hepatitis B virus (HBV) primarily affects the liver and is not typically associated with significant intrauterine or transplacental effects compared to rubella, toxoplasmosis, and Parvovirus B19.