Correct Answer: A

Rationale: Hemolytic uremic syndrome (HUS) typically presents with hematuria, anorexia, hypertension, and purpura due to the hemolytic anemia, thrombocytopenia, and renal failure that characterize this condition.

Correct Answer: B

Rationale: Signs of kidney transplant rejection include fever, diminished urinary output, and swelling/tenderness in the graft area. These symptoms indicate that the body may be rejecting the transplanted organ, requiring immediate medical attention.

Correct Answer: C

Rationale: Siblings should be examined for VUR as it can run in families, and early detection can prevent complications. Limiting fluids is not advisable, and cranberry juice is not effective in preventing VUR. Surgery is usually not indicated for scarring reversal.

Correct Answer: D

Rationale: Acetaminophen (Tylenol) is recommended to help relieve the discomfort associated with acute otitis media, such as pain and fever. Elevating the baby's head during sleep can also help with drainage and relieve pressure, making choice A incorrect. Administering an antibiotic may be necessary for bacterial otitis media but is not usually the first-line treatment for acute otitis media, so choice B is incorrect. Placing the baby to sleep with a bottle can increase the risk of ear infections due to the pooling of milk around the Eustachian tube, so choice C is incorrect.

Correct Answer: D

Rationale: Early repair of congenital genitourinary defects like hypospadias is important to promote a normal body image and avoid psychological issues as the child grows. It also helps prevent urinary complications and allows for normal development.