Monitoring hygiene practices in gynaecological ultrasound: a new approach

Background

Ultrasound is essential in gynaecology and obstetrics, but inadequate hygiene practices can pose infection risks. Though infections directly linked to ultrasound are rare, poor disinfection facilitates microbial transmission. This study evaluates hygiene practices and contamination during ultrasound consultations to improve infection control using a new audit methodology.

Aim

To assess hygiene practices during gynaecology ultrasound consultations using a new audit approach; to evaluate microbial contamination post-consultation; and to correlate practices with contamination levels to optimize protocols.

Methods

Hygiene-related consumables used during consultations were recorded and compared to targets based on current guidelines. Microbiological samples were taken from probes and surfaces after consultations. A survey assessed healthcare professionals' knowledge and perceptions. Personalized training was conducted after initial audits, followed by a control audit.

Findings

Initial audits showed major gaps in hygiene, especially regarding hand hygiene and probe disinfection. Indicators of usage were <100%. After targeted training, they exceeded 120% of objectives. Initial contamination was high (median cfu: 15 on probes, 29 on surfaces), especially on abdominal probes. Post training, contamination significantly decreased (Kruskal–Wallis, P < 0.05). Detected flora included Gram-positive cocci and pathogens such as Enterobacter hormaechei, Staphylococcus aureus, and Pseudomonas spp.

Conclusion

This innovative audit tool effectively assesses hygiene without observer bias and serves as a reliable indicator of good practice. Combined with the survey, it provides objective data. Targeted training improved compliance. Rigorous disinfection of all ultrasound components (including unused probes) between patients remains essential to minimize infection risks.