Surgical Tech Practice Exam

What method is used for sterilizing delicate instruments with vaporized hydrogen peroxide?

1. Eto sterilization

2. Steam autoclaving

3. Sterrad

4. Dry heat sterilization

The correct answer is: Sterrad

The correct answer is Sterrad, which utilizes vaporized hydrogen peroxide as a method of sterilization. This process is specifically designed for heat- and moisture-sensitive medical instruments. Sterrad systems generate a mist of hydrogen peroxide vapor that permeates and sterilizes the surfaces of instruments without causing damage, which is particularly beneficial for delicate surgical tools. This method effectively kills a broad range of microorganisms, including bacteria, viruses, and spores, providing a thorough sterilization process while being gentle enough for fragile items. The other methods listed are suitable for sterilizing different types of materials but are less appropriate for delicate instruments. Ethylene oxide (EtO) sterilization, while also effective for heat-sensitive items, typically requires a longer exposure time and careful handling due to the toxicity of the gas. Steam autoclaving is the most common method for sterilizing instruments but operates at high temperatures and pressures, which can damage delicate instruments. Dry heat sterilization requires high temperatures over an extended period and is often not suitable for moisture-sensitive instruments due to the risk of degradation.