Decontamination and Cleaning Processes Flashcards

A Sterile Processing technician is manually cleaning a set of surgical instruments from an orthopedic procedure. Which of the following actions is MOST critical to perform first to ensure effective cleaning?

Answer: Disassemble multi-part instruments and open all hinged clamps.

Disassembling instruments and opening box locks and hinges is the crucial first step in manual cleaning. This action exposes all surfaces, including crevices and joints where bioburden is likely to accumulate, to the cleaning solution and manual friction, ensuring a thorough decontamination process.

The process of cavitation, which uses microscopic bubbles imploding to dislodge soil from instrument surfaces, is characteristic of which cleaning method?

Answer: Ultrasonic Cleaner

Ultrasonic cleaners work by generating high-frequency sound waves that create microscopic bubbles in the cleaning solution. These bubbles implode, a process called cavitation, creating a powerful scrubbing action that removes soil from hard-to-reach areas like joints, crevices, and lumens.

When preparing to load a washer-disinfector, which of the following is an INCORRECT practice?

Answer: Ensuring hinged instruments are in the closed and locked position.

Hinged instruments must be in an open and unratcheted position when placed in a washer-disinfector. This allows the water and detergent spray to reach and clean all surfaces, especially the critical box lock and jaw areas where bioburden can be trapped.

A new SPD technician is working in the decontamination area. They notice that instruments coming out of the manual cleaning sink still have dried blood in the serrations after being scrubbed. What is the MOST likely cause of this issue?

Answer: The water temperature was too high, causing blood to coagulate.

Using hot water for the initial rinse or wash of proteinaceous soils like blood can cause it to coagulate (cook) onto the instrument surface, making it much more difficult to remove. Cleaning should begin with cool or tepid water.

Which of the following is considered the first step in the decontamination process, beginning immediately after a surgical procedure?

Answer: Point-of-use cleaning.

The decontamination process begins at the point of use. Instruments should be wiped to remove gross soil and kept moist with a pre-treatment spray or damp towel to prevent blood and bioburden from drying before they are transported to the SPD.

To verify the cleaning efficacy of a mechanical washer-disinfector, a technician should use a:

Answer: Cleaning verification device, such as a TOSI.

Cleaning verification tests, like the TOSI (Test Object Surgical Instrument), are specifically designed to challenge the cleaning process of automated washers. They use a standardized soil (like dried blood on a stainless steel plate) to provide a consistent, repeatable method for evaluating the machine's cleaning effectiveness. Biological indicators and chemical integrators are used to monitor sterilization processes, not cleaning.