目的 分析多功能空气消毒机在普通内科病房的动态消毒效果，为病房空气质量的控制提供参考依据。 方法 2010年9月－2011年4月对普通内科病房在动态状态下进行细菌检测并使用多功能空气消毒机消毒，并就消毒前后的空气细菌菌落总数进行分析比较。 结果 在动态状态下，病房关门关窗并开启空调机时，使用多功能空气消毒机消毒前的空气细菌菌落总数显著高于消毒后，差异有统计学意义（P＜0.05）；病房在开门开窗时，使用多功能空气消毒机消毒前后的空气细菌菌落总数比较，差异无统计学意义（P＞0.05）。 结论 普通内科病房在关门关窗并开启空调机动态状态下，使用多功能空气消毒机可以降低空气细菌菌落总数，改善房间空气质量。
Objective To establish the reference intervals for platelet-related parameters among the elderly population in Longquanyi District, Chengdu. Methods From November 1st to December 31st 2021, elderly individuals aged between 60 and 80 years were selected from the Longquanyi branch of a natural population cohort study initiated by West China Hospital of Sichuan University in 2021. Complete blood cell analysis was performed to obtain the platelet-related parameters. IBM SPSS Statistics 25 software was used to analyze the data and establish the reference intervals for platelet-related parameters among the elderly population in Longquanyi District. Results A total of 1938 reference individuals were selected by inclusion and exclusion criteria, and finally 1669 reference individuals, including 665 males and 1004 females, were included to establish the reference intervals after excluding outliers. The reference range of blood platelet count was (95.03-301.32)×109/L for elderly men and (112.13-320.75)×109/L for elderly women, respectively. The reference range of mean platelet volume was 8.97-13.80 fL for elderly men and 9.10-13.90 fL for elderly women, respectively. The reference range of plateletcrit was 0.13%-0.30% for elderly men and 0.14%-0.32% for elderly women, respectively. The reference range of platelet distribution width was 15.80-16.90 for elderly men and 15.70-16.90 for elderly women, respectively. Conclusion It is of practical significance to establish platelet-related parameters in the elderly in local region.