A new sampling algorithm demonstrates that ultrasound equipment cleanliness can be improved.

Area of Science:

• Healthcare-associated infections
• Medical device reprocessing
• Diagnostic imaging technology

Background:

• Australian guidelines exist for cleaning reusable ultrasound probes and equipment.
• This preliminary study assessed the cleanliness of patient-ready ultrasound equipment across five healthcare facilities in a major city.

Purpose of the Study:

• To investigate the cleanliness standards of ultrasound equipment in clinical use.
• To evaluate the effectiveness of adenosine triphosphate (ATP) testing as a quality assurance tool for equipment cleanliness.

Main Methods:

• Adenosine triphosphate (ATP) testing with a sampling algorithm was used to assess surface cleanliness, measuring relative light units (RLUs).
• Surfaces were tested for compliance with literature-recommended cleanliness levels (<100 RLUs).
• A cleaning intervention step (CIS) using disposable wipes was performed, followed by retesting for ATP levels.

Main Results:

• Out of 253 tested surfaces, 26% (66/253) showed inadequate cleanliness.
• Following the cleaning intervention, over 91% (135/148) of surfaces demonstrated significant improvement in cleaning standards (P>.001).
• For 6% (9/148) of surfaces, the cleaning intervention needed repeating to achieve target cleanliness (<25 RLUs).

Conclusions:

• Adenosine triphosphate (ATP) testing serves as an effective, real-time quality assurance method for monitoring ultrasound probe and equipment cleanliness.
• The study highlights the need for consistent adherence to cleaning protocols to ensure patient safety.