Messina Gabriele, Spataro Giuseppe, Catarsi Laura, De Marco Maria Francesca, Grasso Anna, Cevenini Gabriele
Department of Molecular and Developmental Medicine, University of Siena, via Aldo Moro 2, Siena, Italy.
Department of Medical Biotechnologies, University of Siena, via Aldo Moro 2, Siena, Italy.
AIMS Public Health. 2020 Jul 2;7(3):469-477. doi: 10.3934/publichealth.2020038. eCollection 2020.
Surgical site infections are the second major cause of hospital acquired infections, accounting for a large part of overall annual medical costs. Airborne particulate is known to be a potential carrier of pathogenic bacteria. We assessed a mobile air particle filter unit for improvement of air quality in an operating room (OR). A new mobile air decontamination and recirculation unit, equipped with a crystalline ultraviolet C (Illuvia® 500 UV) reactor and a HEPA filter, was tested in an OR. Airborne particulate was monitored in four consecutive phases: I) device OFF and OR at rest; II) device OFF and OR in operation; III) device ON and OR in operation; IV) device OFF and OR in operation. We used a particle counter to measure airborne particles of different sizes: ≥0.3, ≥0.5, ≥1, ≥3, ≥5, >10 µm. Activation of the device (phases III) produced a significant reduction (p < 0.05) in airborne particulate of all sizes. Switching the device OFF (phase IV) led to a statistically significant increase (p < 0.05) in the number of particles of most sizes: ≥0.3, ≥0.5, ≥1, ≥3 µm. The device significantly reduced airborne particulate in the OR, improving air quality and possibly lowering the probability of surgical site infections.
手术部位感染是医院获得性感染的第二大主要原因，占年度医疗总成本的很大一部分。已知空气传播颗粒是病原菌的潜在载体。我们评估了一种移动式空气颗粒过滤器装置，以改善手术室（OR）的空气质量。在一个手术室中测试了一种新型的移动式空气净化和再循环装置，该装置配备了一个晶体紫外线C（Illuvia® 500 UV）反应器和一个高效空气过滤器（HEPA）。对空气传播颗粒进行了连续四个阶段的监测：I）装置关闭且手术室处于静止状态；II）装置关闭且手术室在运行中；III）装置开启且手术室在运行中；IV）装置关闭且手术室在运行中。我们使用颗粒计数器测量不同大小的空气传播颗粒：≥0.3、≥0.5、≥1、≥3、≥5、>10 µm。装置启动（阶段III）使所有大小的空气传播颗粒显著减少（p < 0.05）。关闭装置（阶段IV）导致大多数大小颗粒的数量在统计学上显著增加（p < 0.05）：≥0.3、≥0.5、≥1、≥3 µm。该装置显著减少了手术室中的空气传播颗粒，改善了空气质量，并可能降低手术部位感染的概率。
