Conversion reactions are best characterized by

Correct Answer: D

Rationale: Conversion reactions often have sudden onset, are linked to psychological stressors, and may mimic neurological conditions like pseudoseizures. They typically resolve once the underlying stressor is addressed.

Correct Answer: D

Rationale: Anaphylactic shock is a severe allergic reaction, often triggered by vaccines or medications. It leads to vasodilation, hypotension, and airway obstruction, requiring immediate administration of epinephrine.

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: B

Rationale: For children, the recommended depth of chest compressions is about 4-5 cm (one-third the anteroposterior diameter of the chest).

Correct Answer: C

Rationale: A bag-valve mask (Ambu bag) can be used with room air or supplemental oxygen for ventilation.