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

The standard dynamic-air-removal steam sterilization cycle time for wrapped items is correctly identified as 3 minutes at 275°F (135°C) and 28 to 30 psi. This specification is grounded in the principles of steam sterilization, which relies on the effective removal of air and the precise relationship between temperature, pressure, and sterilization time to ensure the destruction of microorganisms.

In dynamic-air-removal sterilizers, air is not simply displaced by steam; instead, it is removed in a controlled manner to facilitate the penetration of steam into wrapped items. The specified time of 3 minutes at the higher temperature and pressure allows for efficient sterilization without compromising the integrity of the items being sterilized. This short period is sufficient because the elevated temperature effectively kills pathogens while minimizing the risk of damage to the wrapped instruments.

Understanding the proper cycle time and conditions is vital for maintaining effective sterilization practices, as variations in temperature and pressure can lead to inadequate sterilization and potentially compromise patient safety.