Agrawal Megha, Devi Ms Kusuma
Department of Physiology, All India Institute of Medical Sciences AIIMS, Bathinda, Punjab, India.
Department of Physiology, Bangalore Medical College and Research Institute, Bengaluru, Karnataka, India.
Indian J Occup Environ Med. 2023 Apr-Jun;27(2):177-182. doi: 10.4103/ijoem.ijoem_280_22. Epub 2023 Jul 3.
Air conditioners (AC) have become indispensable in the contemporary World. However, their effects on respiratory health need to be explored further using dynamic and static lung functions.
The objectives were: 1. To evaluate and compare dynamic parameters (FEV1, FVC, FEV1/FVC, PEFR, and FEF25-75) in AC users and non-users of Bengaluru. 2. To evaluate and compare airway resistance and specific airway conductance as additional parameters.
After applying ATS-ERS criteria for lung disorders, 30 AC users and non-users of Bengaluru, aged 18-40 yrs were assessed using body plethysmography. A significant association of restrictive pattern was seen in AC users (9 AC users out of 60 participants, Chi-square 8.37, = 0.0038) having an Odd's ratio of 26.95 (CI: 1.4876 to 488.3558, Z = 2.229, = 0.0258). Airway resistance (Raw) was comparable in both groups further indicating a non-obstructive pathology.
AC users had a significant decrease in flow rates (PEFR and FEF25-75) as well as an association with restrictive lung disorder suggesting the need for proper ventilation and hygiene. It is crucial to develop policies to maintain indoor air quality.
在当代社会，空调已变得不可或缺。然而，其对呼吸健康的影响需要通过动态和静态肺功能进一步探究。
目标如下：1. 评估并比较班加罗尔空调使用者和非使用者的动态参数（第一秒用力呼气容积、用力肺活量、第一秒用力呼气容积/用力肺活量、呼气峰值流速和25%-75%用力呼气流量）。2. 评估并比较气道阻力和比气道传导率作为附加参数。
应用美国胸科学会-欧洲呼吸学会的肺部疾病标准后，使用体容积描记法对30名年龄在18至40岁的班加罗尔空调使用者和非使用者进行评估。在空调使用者中观察到限制性模式有显著关联（60名参与者中有9名空调使用者，卡方值为8.37，P = 0.0038），优势比为26.95（置信区间：1.4876至488.3558，Z = 2.229，P = 0.0258）。两组的气道阻力（Raw）相当，进一步表明为非阻塞性病变。
空调使用者的流速（呼气峰值流速和25%-75%用力呼气流量）显著降低，且与限制性肺部疾病有关联，这表明需要适当的通风和卫生条件。制定维护室内空气质量的政策至关重要。
