The combination of medications and cognitive-behavioral therapy (CBT) has shown the best treatment for patients with obsessive-compulsive disorder (OCD). Of the following, the BEST initial treatment for children with OCD is

Correct Answer: A

Rationale: Fluoxetine is an SSRI that effectively reduces OCD symptoms in children, making it a first-line pharmacological treatment.

Correct Answer: B

Rationale: Exercise does not contribute to hormonal rhinitis, which is typically associated with hormonal imbalances from conditions such as pregnancy, thyroid dysfunction, or systemic diseases.

Correct Answer: A

Rationale: Dilated cardiomyopathy results in impaired contractility, leading to heart failure and chamber dilation.

Correct Answer: C

Rationale: Obstructive sleep apnea syndrome is suggested by snoring, daytime sleepiness, and enlarged tonsils, whereas tonsillitis or abscess would present with additional signs of infection.

Correct Answer: B

Rationale: Tumor lysis syndrome results from rapid tumor cell breakdown, leading to hyperkalemia due to massive potassium release from lysed cells.