MDRAO Practice Exam 2025 – Complete Exam Prep Resource

For all medical devices that have a lumen, it is essential to perform thorough cleaning procedures before mechanical cleaning. This includes hand washing, flushing, and brushing the device. The lumen, which is a narrow channel within the device, can easily trap debris, blood, and other contaminants.

Hand washing helps to remove surface contaminants, while flushing with an appropriate solution ensures that any remaining particles within the lumen are dislodged and rinsed away. Brushing further aids in cleaning by physically removing any stubborn residues adhered to the inner surfaces. This combination is crucial for ensuring that the device is effectively cleaned and prepared for disinfection or sterilization processes that follow.

In contrast, rinsing with alcohol may not effectively remove all types of contaminants or debris present in the lumen. Soaking in bleach can damage certain materials and is not a routine cleaning step for all devices. Cleaning without special consideration would likely lead to inadequate cleaning, potentially posing a risk of infection or transmission of pathogens. Therefore, the comprehensive approach of hand washing, flushing, and brushing is necessary for ensuring that the device is properly cleaned prior to further processing.