AST Surgical Technologist Practice Exam

What is the primary function of an electrosurgical unit in surgery?

1. Coagulation of tissues

2. Dissection of tissues

3. Stabilizing blood pressure

4. Suction of fluids

The correct answer is: Coagulation of tissues

The primary function of an electrosurgical unit in surgery is coagulation of tissues. Electrosurgery utilizes high-frequency electrical currents to generate heat, which can cut through tissue while simultaneously coagulating blood vessels. This process minimizes blood loss during surgical procedures, making it essential for many types of surgeries. By coagulating tissues, the electrosurgical unit effectively seals blood vessels, thus promoting hemostasis and reducing the risk of excessive bleeding. While dissection of tissues is a secondary function that can occur during electrosurgery, the focus of the unit is primarily on the ability to control bleeding through coagulation. Stabilizing blood pressure is not a direct function of an electrosurgical unit; instead, it is typically managed by the anesthesiology team. Suctioning fluids is also unrelated to the primary purpose of the electrosurgical unit, as this task is performed using suction devices designed specifically for that purpose during surgery. The ability to effectively manage hemostasis with minimal damage to surrounding tissues is what makes the electrosurgical unit vital in the operating room.