Most common cause of precocious puberty in boys is

ATI LPN

ATI LPN Test Bank

Most common cause of precocious puberty in boys is:

A. Adrenal tumor B. Testicular tumor C. Idiopathic D. Hypothyroidism

Correct Answer: A

Rationale: Adrenal tumor is the most common cause of precocious puberty in boys, per AAP (doc p148, Q563).

Best initial management in a child with newly diagnosed type 1 diabetes and ketoacidosis is:

A. Oral hypoglycemics B. Insulin therapy C. IV fluids and insulin D. Diet modification

Correct Answer: C

Rationale: IV fluids and insulin treat diabetic ketoacidosis, per AAP (doc p150, Q595).

A 4-year-old girl presents with fever and a vesicular rash on the trunk. Most likely diagnosis is:

A. Measles B. Chickenpox C. Herpes zoster D. Rubella

Correct Answer: B

Rationale: Chickenpox features fever and vesicular rash, per CDC. A, C-E differ.

A 2-month-old infant presents with poor feeding and cyanosis. Echocardiogram shows a single ventricle. Most likely diagnosis is:

A. Tetralogy of Fallot B. Tricuspid atresia C. Hypoplastic left heart syndrome D. Transposition of the great arteries

Correct Answer: C

Rationale: HLHS features a single ventricle, per AHA. A, B, D, E differ.

A 6-year-old boy presents with night sweats and weight loss. Chest x-ray shows mediastinal widening. Most likely diagnosis is:

A. Pneumonia B. Tuberculosis C. Lymphoma D. Asthma

Correct Answer: C

Rationale: Lymphoma features night sweats and mediastinal widening, per NCI. A, B, D, E differ.

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