Certified Instrument Specialist (CIS) Practice Exam 2025 - Free CIS Practice Questions and Study Guide

The impingement method refers to the use of pressurized water to remove bioburden, which is critical in healthcare settings for ensuring that instruments are thoroughly cleaned before sterilization. This technique relies on the force of water jets to dislodge contaminants, such as blood, tissue, and debris, from the surfaces of instruments.

Pressurized water can effectively reach into crevices and complex geometries of medical devices, ensuring a high level of cleanliness. This method is particularly effective when combined with suitable detergents that enhance the cleaning process. It is a common practice in instrument reprocessing, promoting both hygiene and safety in a surgical environment.

In contrast, the application of chemical disinfectants to surfaces primarily focuses on killing pathogens and may not physically remove dirt or debris. Manual cleaning techniques for dirty instruments involve human effort and may not achieve the same effectiveness as pressurized methods. A drying method for surgical tools is a subsequent process that takes place after cleaning has been completed, emphasizing the importance of cleanliness prior to drying. Therefore, utilizing pressurized water in the impingement method is vital for preparing instruments for safe use in medical procedures.