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ANZ J Surg. 2010 Mar;80(3):169-73. doi: 10.1111/j.1445-2197.2009.05200.x.

Use of face masks by non-scrubbed operating room staff: a randomized controlled trial.

Author information

1
Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia. joan_webster@health.qld.gov.au

Abstract

BACKGROUND:

Ambiguity remains about the effectiveness of wearing surgical face masks. The purpose of this study was to assess the impact on surgical site infections (SSIs) when non-scrubbed operating room staff did not wear surgical face masks.

METHODS:

Eight hundred twenty-seven participants undergoing elective or emergency obstetric, gynecological, general, orthopaedic, breast or urological surgery in an Australian tertiary hospital were enrolled. Complete follow-up data were available for 811 patients (98.1%). Operating room lists were randomly allocated to a 'Mask group' (all non-scrubbed staff wore a mask) or 'No Mask group' (none of the non-scrubbed staff wore masks). The primary end point, SSI was identified using in-patient surveillance; post discharge follow-up and chart reviews. The patient was followed for up to six weeks.

RESULTS:

Overall, 83 (10.2%) surgical site infections were recorded; 46/401 (11.5%) in the Masked group and 37/410 (9.0%) in the No Mask group; odds ratio (OR) 0.77 (95% confidence interval (CI) 0.49 to 1.21), p = 0.151. Independent risk factors for surgical site infection included: any pre-operative stay (adjusted odds ratio [aOR], 0.43 (95% CI, 0.20; 0.95), high BMI aOR, 0.38 (95% CI, 0.17; 0.87), and any previous surgical site infection aOR, 0.40 (95% CI, 0.17; 0.89).

CONCLUSION:

Surgical site infection rates did not increase when non-scrubbed operating room personnel did not wear a face mask.

[Indexed for MEDLINE]

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