Certification Board for Sterile Processing and Distribution (CBSPD) Sterile Processing Technician Practice Exam

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What is the primary purpose of the chromium oxide layer on surgical instruments?

  1. To improve grip

  2. To enhance appearance

  3. To make the instrument resistant to corrosion

  4. To increase conductivity

The correct answer is: To make the instrument resistant to corrosion

The primary purpose of the chromium oxide layer on surgical instruments is to make the instrument resistant to corrosion. This layer forms on the surface when chromium is exposed to oxygen, creating a protective barrier that inhibits the formation of rust and degradation caused by moisture and other environmental factors. Surgical instruments are often subjected to various cleaning and sterilization processes where they come into contact with water and chemicals; therefore, having this protective layer is crucial for maintaining their integrity and functionality over time. By ensuring that instruments remain corrosion-free, the chromium oxide layer contributes to the longevity of the equipment, ultimately ensuring patient safety and effective healthcare delivery.