Short report
The effect of whole body disinfection on intraoperative wound contamination

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Abstract

As part of a large whole body disinfection (WBD) trial two small sub-groups of patients who showered preoperatively with either a 4% chlorhexidine (CHX; N = 29) or placebo (N = 27) detergent were studied to assess intraoperative wound contamination. The groups were well matched for age, sex and length of surgery. A membrane filter contact technique was used for bacterial recovery from the wounds after the initial skin incision and before wound closure. The membrane filters were incubated aerobically on blood agar plates with a CHX neutralizer for 48 h at 37 °C and colonies were counted. The results show a significant difference between the bacterial counts at the start and end of surgery in the CHX and placebo groups. There was no difference in bacterial counts at the start of surgery between the CHX and placebo groups. There was a significant difference in the bacterial counts at the end of surgery between the CHX and placebo groups. These results indicate that preoperative WBD with CHX reduces intraoperative wound contamination but the effect of this on postoperative wound sepsis rates awaits the results of a large WBD trial.

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