Ophthalmic Assistant

Category - Assisting in Surgery

Which of the following surgical instruments has a wire tip that carries an electrical current and is used to seal blood vessels and stop blood flow?
  1. Hemostat
  2. Cautery
  3. Cannula
  4. Suture
Explanation
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.
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