Antibacterial effects on dry-fast and traditional water-based surgical scrubbing methods: a two-time points experimental study

Long-Term Disinfection in Operating Rooms Affects Skin Microbiota and Metabolites of Medical Personnel

INTRODUCTION

Disinfectants play a critical role in reducing healthcare-associated infections by eliminating microorganisms on surfaces. However, prolonged use of disinfectants may adversely affect the skin microflora, essential for skin health and infection prevention. This study investigates the impact of disinfection on the skin microbiota and metabolites of medical personnel in operating rooms, aiming to provide a scientific foundation for safeguarding their skin health.

METHODS

We conducted 16S sequencing and metabolomic analysis to assess the effects of disinfection on the skin microbiota and metabolites of medical personnel. Samples were collected from operating room personnel after disinfectant exposure to identify changes in microbial communities and metabolite profiles.

RESULTS

Our analysis revealed that prolonged use of disinfectants led to alterations in skin microbial communities and microbial metabolites. These alterations included the production of harmful metabolites that could potentially promote skin infections and other health issues among medical personnel.

CONCLUSION

The findings underscore the importance of minimizing disruptions to skin microbiota and metabolites caused by long-term disinfectant use to preserve the overall health of medical personnel. This study provides valuable insights into the relationship between disinfectant use, skin microbiota, and metabolites, highlighting the necessity for further research in this area.

Effectiveness of Surgical hand Washing with Chlorhexidine, Providone iodine and Alcohol on Reducing the Microorganisms on the Hands: A Systematic Review

Background: Postoperative infection is one of the causes of mortality and the hands of the surgical team are the most common cause. According to the The Center for Disease Control and Prevention (CDC), proper hand washing can reduce the occurrence of nosocomial infections by up to 30%. The aim of this study is to determine the effectiveness of surgical hand washing using chlorhexidine, providone iodine and alcohol in reducing the microorganisms on the hand.Method: The data was collected from the following electronic databases: Science Direct, Springer link, Scopus and ProQuest. The search obtained 11 articles in accordance with the inclusion criteria and we obtained the literature in full text form.Result: The results of the study found three articles that mentioned hand washing with an alcohol hand rub as being more effective than iodine and chlorhexidine providone. There was one article described that both alcohol hand rub and chlorhexidine are more effective than iodine providone, Another article mentioned that chlorhexidine, providone iodine and alcohol hand rub were equally effective at reducing microorganisms contaminating the hand.Conclusion: The conclusion of the study is that surgical hand washing using chlorhexidine, providone iodine and alcohol are all effective at reducing microorganisms.

Alcohol-based surgical hand preparation: translating scientific evidence into clinical practice

Background

Although alcohol-based surgical hand preparation offers potential advantages over the traditional surgical scrubbing technique, implementing it may be challenging due to resistance of surgeons in changing their practice. We aimed to implement alcohol-based surgical hand preparation in the hospital setting evaluating the impact of that on the quality and duration of the procedure, as well as on the prevention of surgical site infections.

Methods

A quasi-experimental study conducted at a tertiary-care university hospital from April 01 to November 01, 2017. Participants were cardiac and orthopedic surgical teams (n = 56) and patients operated by them (n = 231). Intervention consisted of making alcohol-based handrub available in the operating room, convincing and training surgical teams for using it, promoting direct observation of surgical hand preparation, and providing aggregated feedback on the quality of the preparation. The primary study outcome was the quality of the surgical hand preparation, inferred by the compliance with each one of the steps predicted in the World Health Organization (WHO) technique, evaluated through direct observation. Secondary study outcome was the patient’s individual probability of developing surgical site infection in both study periods. We used the Wilcoxon for paired samples and McNemar’s test to assess the primary study outcome and we build a logistic regression model to assess the secondary outcome.

Results

We observed 534 surgical hand preparation events. Among 33 participants with full data available for both study periods, we observed full compliance with all the steps predicted in the WHO technique in 0.03% (1/33) of them in the pre-intervention period and in 36.36% (12/33) of them in the intervention period (OR:12.0, 95% CI: 2. 4-59.2, p = 0.002). Compared to the pre-intervention period, the intervention reduced the duration of the preparation (4.8 min vs 2.7 min, respectively; p < 0.001). The individual risk of developing a surgical site infection did not significantly change between the pre-intervention and the intervention phase (Adjusted RR = 0.66; 95% CI 0. 16-2.70, p = 0.563).

Conclusion

Our results demonstrate that, when compared to the traditional surgical scrub, alcohol-based surgical hand preparation improves the quality and reduces the duration of the preparation, being at least equally effective for the prevention of surgical site infections.