Electrosurgery is widely used in the practice of otolaryngology-head a
nd neck surgery. Despite its popularity, few training programs give fo
rmal education in the optimal use of electrosurgical instruments. This
article reviews the history, physics, and tissue effects of these com
monly used devices. Armed with this knowledge, the head and neck surge
on can take full advantage of electrosurgery's ability to dissect tiss
ues with precision and minimal blood loss.