Department of Ophthalmology, University Hospital Virgen de la Victoria, Málaga, Spain.
University of Málaga, Málaga, Spain.
Retina. 2021 Nov 1;41(11):2215-2220. doi: 10.1097/IAE.0000000000003202.
To investigate the bacterial growth in the surgical face masks used by patients who received intravitreal injections and study the effect of povidone-iodine on the periocular area (PA) of masks.
Forty patients who attended for intravitreal injections were divided in those with less (<4 hours) and more (>4 hours) than 4 hours of mask use. Each group was divided depending on the application or not of povidone-iodine in the PA of the mask. Bacterial load was studied on PA and mouth area samples.
The bacterial load in the PA was higher in the >4 hours group compared with the <4 hours group (13.2 vs. 48.75 colony-forming units/μL; P = 0.03). The contamination in the PA significantly decreased after applying povidone-iodine in the >4 hours group (P = 0.01). The use or not of povidone-iodine was strongly correlated to a positive culture (OR = 9.0, P = 0.00. CI 1.63-49.44).
Surgical face masks worn for more than 4 hours present higher contamination in the PA than those with less use. Bacterial load in the PA is reduced with povidone-iodine on masks used for more than 4 hours. This contamination should be considered in the asepsis protocol of intravitreal injections.
研究接受玻璃体腔内注射的患者使用的手术口罩中的细菌生长情况，并研究聚维酮碘对口罩眼周区域（PA）的影响。
将 40 名接受玻璃体腔内注射的患者分为口罩使用时间少于（<4 小时）和多于（>4 小时）4 小时的两组。每组根据是否在口罩的 PA 上应用聚维酮碘进一步分组。研究 PA 和口腔区域样本中的细菌负荷。
与<4 小时组相比，>4 小时组的 PA 细菌负荷更高（13.2 vs. 48.75 菌落形成单位/μL；P = 0.03）。在>4 小时组中，在 PA 上应用聚维酮碘后，污染明显减少（P = 0.01）。聚维酮碘的使用与否与阳性培养结果密切相关（OR = 9.0，P = 0.00. CI 1.63-49.44）。
口罩使用时间超过 4 小时时，PA 的污染程度高于使用时间较短的口罩。在>4 小时使用的口罩上使用聚维酮碘可降低 PA 中的细菌负荷。在玻璃体腔内注射的无菌操作方案中应考虑这种污染。
