Validation of Preoperative Shower Quality Assessment by ATPmetry (PRODOUCH'Eval)

Ambulatory Surgical Procedures

According to the 2013 guidelines of the French Society for Hospital Hygiene (SF2H), it is recommended to carry out at least one preoperative shower, with an antiseptic soap or a mild soap as close as possible to the operation. This preoperative shower aims to eliminate dirt and make the skin clean to facilitate the subsequent action of the antiseptic in the operating theatre. Thus, detersion is no longer carried out systematically but is only recommended in the presence of soiled skin. The preoperative shower, and the verification of its effectiveness, therefore become essential steps in the preoperative skin preparation. Indeed, the cleanliness of the skin influences the quality of the antisepsis performed in the operating theatre. Visual assessment of preoperative skin cleanliness by the nurse is currently the reference technique. However, a qualitative pilot study (Consiglio et al., Rech Soins Inf 2021) of nine obese patients and eleven surgical nurses revealed a lack of visual verification of skin cleanliness, which caregivers found difficult to perform. In a second multicentre study of 430 patients (Boulet et al., under review by Nursing Open), only 17% reported visual verification of skin cleanliness. Thus, this initial work highlights a barrier for caregivers to visually check preoperative skin cleanliness. The ATPmetry method was initially developed to assess the cleanliness of surfaces. In a second phase, the manufacturer (Hygiena®) showed through a study of 20 professionals that this method also allowed the evaluation of skin cleanliness of hands after washing. This method would have the advantage of being objective, potentially improving acceptability to caregivers and patients compared to direct visual inspection of skin cleanliness. Thus, ATPmetry appears to us as a method of interest for assessing preoperative skin cleanliness, but needs to be validated for this indication. To date, there is no other method than the simple subjective visual skin assessment by the caregiver, which is highly exposed to a bias of non-reproducibility and inter-observer variability.

This study aims to evaluate a simple and objective method of measuring preoperative skin cleanliness (by swabbing and ATPmetry), in order to eventually standardise this method for routine practice. The reproducibility of the ATPmetry measurement will be assessed as well as its concordance with two other methods (visual skin inspection and visual swab inspection). An statistical analysis will assess its agreement with each of the other two methods, as compared to the agreement between the two methods.

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