Which of the following statements likely condition in someone with atrial fibrillation?

Correct Answer: C

Rationale: Atrial fibrillation causes an irregular and often rapid ventricular rate due to erratic atrial impulses.

Correct Answer: D

Rationale: M-protein aids Streptococcus pyogenes adhesion to host cells.

Correct Answer: B

Rationale: Cutaneous leukocytoclastic vasculitis affects small vessels, causing purpura.

Correct Answer: C

Rationale: Carvedilol has both beta and alpha-blocking activity, beneficial in heart failure.

Correct Answer: C

Rationale: Sodium nitroprusside is the drug of choice for hypertensive crisis due to rapid action.