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Trauma

SCRUBBING UNDER THE INFLUENCE: ALCOHOL-BASED SURGICAL HAND DISINFECTANT INCREASES ESTIMATED BLOOD ALCOHOL LEVEL

Scottish Committee for Orthopaedics and Trauma (SCOT) meeting, January 2016



Abstract

Alcohol-based cutaneous disinfectant use is well established in the surgical environment. However, during scrubbing, volatile alcohols are inspired into the pulmonary system. With the recent reduction in the national drink driving limit, even low levels of detected breath alcohol can have legal implications. This study aimed to determine the extent to which passive inhalation of alcohol-based surgical hand disinfectant affects estimated percentage blood alcohol concentration (%BAC) on breathalyser testing.

Over a one week period (September 2015), 24 theatre team members (13 surgeons, 6 scrub staff and 5 anaesthetists) were prospectively recruited. The mean cohort age was 43.7 years (50% female). Participants were instructed to scrub for 90 seconds with an alcohol-based hand disinfectant comprising of the active ingredients (per 100g): propan-1-ol 30.0g, propan-2-ol 45.0g and mecetroniumetilsulphate 0.2g. Estimated %BAC was recorded immediately before and after scrubbing, and every five minutes thereafter until levels returned to 0.00%BAC. Results ≥ 0.05%BAC were deemed above the Scottish legal driving limit.

All participants exceeded the 0.05%BAC threshold on immediate post scrub testing. The mean peak %BAC was 0.12% (± 0.05) with a maximum BAC documented at ≥0.20% in four subjects. In all participants, the %BAC descended to zero over a period ranging from 10–30 minutes with a mean time to zero of 16.7 (± 4.8) minutes.

Following the use of alcohol-based surgical hand disinfectant, estimated blood alcohol concentrations detected on breath sampling can rise up to four times the Scottish driving limit which may have legal and professional ramifications.