Answer: B - Cautery
A cautery is a surgical instrument that has a wire tip that carries an electrical current and is used to seal blood vessels and stop blood flow. Its current is supplied either by a free-standing power box or, when less or non-variable current is required, by a battery installed in the instrument itself. The cautery must always be checked for sufficient or appropriate power before the procedure begins.
Electrocautery uses alternating current at a high frequency to generate heat, which cuts, vaporizes, or coagulates tissue depending on the power. Electrocautery is a contact mode of tissue destruction and a variety of cautery probes are available including blunt-tip probes, knives, and snares.
