连台手术不同自净时间对Ⅲ级洁净手术室空气质量及手术部位感染的影响

doi:10.3969/j.issn.1671-7171.2025.11.007

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Abstract 【Objective】To explore the effect of different air self-cleaning times between consecutive surgeries on air quality and surgical site infection (SSI) in Class Ⅲ clean operating rooms. 【Methods】A cluster randomized design was adopted. Twelve Class Ⅲ clean operating rooms were randomly divided into Groups A, B, C, and D, with the air self-cleaning time between consecutive surgeries set to 5 min, 10 min, 15 min, and 20 min, respectively. Finally, 100 patients (100 surgeries) were included in each group. Immediately after air self-cleaning, the total number of bacterial colonies and the number of 0.5 μm and 5.0 μm dust particles in the central and peripheral areas of the operating room were detected. Meanwhile, the occurrence of SSI within 30 days after surgery was tracked for all patients. 【Results】The qualification rates of bacterial colonies in the peripheral and central areas of Group A were 72.00% and 77.00%, respectively, while those of Groups B-D were all 100.00%. The qualification rates of bacterial colonies in the peripheral and central areas of Group A were significantly different from those of Groups B, C, and D (P<0.05), but there were no significant differences among Groups B, C, and D (P>0.05). The number of 0.5 μm dust particles in Groups A, B, C, and D was (1168.37±19.46) particles/m³, (500.97±12.40) particles/m³, (466.92±12.00) particles/m³, and (445.78±12.44) particles/³, respectively. Group A was significantly different from Groups B, C, and D (P<0.05); there was no significant difference between Group B and Group C (P>0.05), but there was a significant difference between Group B and Group D (P<0.05); no significant difference was found between Group C and Group D (P>0.05). The number of 5 μm dust particles in Groups A, B, C, and D was (314.24±2.18) particles/m³, (166.60±2.39) particles/m³, (148.10±2.24) particles/m³, and (137.92±2.33) particles/m³, respectively, with significant differences among all groups (P<0.05). There was no significant difference in the incidence of SSI among the four groups (P＝0.245). 【Conclusion】For Class Ⅲ clean operating rooms, when the number of medical staff is less than 10 and the surgical incisions are Class Ⅰ or Ⅱ, an air self-cleaning time of 10 min between consecutive surgeries can effectively improve the air quality of the operating room without increasing the risk of SSI, which is beneficial to improving the turnover efficiency of the operating room.

Key words： Operating Rooms Air Pollution, Indoor Surgical Wound Infection

Received: 23 September 2025

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R124.33

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http://journal07.magtech.org.cn/yxlcyj/EN/10.3969/j.issn.1671-7171.2025.11.007 OR http://journal07.magtech.org.cn/yxlcyj/EN/Y2025/V42/I11/1864

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