Which form of hypersensitivity reaction is characterized by antigen-antibody reactions on the cell membrane with activation of complement and destruction of the involved cell?

Correct Answer: B

Rationale: Type II hypersensitivity involves antibody-mediated cell destruction via complement activation.

Correct Answer: D

Rationale: Long-term corticosteroid use can lead to osteoporosis, hypertension, and diabetes mellitus, making 'All of the above' the correct answer.

Correct Answer: B

Rationale: Chest compressions in pediatric basic life support should be delivered with extended elbows for effective force generation.

Correct Answer: C

Rationale: Serotonin reuptake inhibitors (SSRIs) are preferred over older medications like tricyclics due to better safety profiles and efficacy in pediatric depression.

Correct Answer: B

Rationale: Coarctation of the aorta typically causes weak femoral pulses but does not affect the right brachial pulse significantly, as the narrowing is usually distal to the right subclavian artery.