A 32-Year-Old Man Undergoes Evaluation for Episodes of Paroxysmal Supraventricular

A 32-year-old man undergoes evaluation for episodes of paroxysmal supraventricular tachycardia.  An electrophysiology study reveals focal atrial tachycardia that originates in the crista terminalis of the right atrium.  Radiofrequency ablation is planned to destroy the ectopic focus and treat the arrhythmia.  Which of the following nerves is in close proximity to the treatment site and is at risk for injury during the ablation?

A) Accessory nerve
B) Long thoracic nerve
C) Phrenic nerve
D) Recurrent laryngeal nerve
E) Sympathetic trunk

Correct Answer:

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