Overuse of β2-agonists implies inadequate control. Poor control is suggested by the use of more than

Correct Answer: C

Rationale: Using more than 8 puffs per day suggests poor asthma control, necessitating medication adjustment.

Correct Answer: C

Rationale: Epstein-Barr virus and other infections can cause non-IgE-mediated urticaria through immune complex formation and cytokine release.

Correct Answer: D

Rationale: Hemolytic disease of the newborn is characterized by increased reticulocytes and nucleated RBCs,

Correct Answer: B

Rationale: Aplastic anemia results from bone marrow failure, leading to a reduced reticulocyte count, unlike hemolytic conditions where reticulocytes are increased.

Correct Answer: D

Rationale: Cervical spine immobilization is crucial in cases of suspected spinal cord injury to prevent further neurological damage.