Jiamjarasrangsi W, Bualert S, Chongthaleong A, Chaindamporn A, Udomsantisuk N, Euasamarnjit W
Department of Preventive and Social Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
Int J Tuberc Lung Dis. 2009 Apr;13(4):454-9.
Forty-two community and general hospitals in central Thailand.
To examine the adequacy of indoor ventilation for nosocomial tuberculosis (TB) prevention in public hospitals in central Thailand.
A cross-sectional survey was conducted among 323 patient care and ancillary areas in the target hospitals. Data on indoor ventilation rate were collected by the tracer gas method and reported as air changes per hour (ACH). The adequacy of the measured ventilation rates were then determined by comparison with the international recommended standard values.
Indoor ventilation rates were inadequate in almost half of the studied areas (144/323, 44.6%). The inadequacy was particularly serious in the emergency rooms (ERs) and radiological areas, where 73.8% (31/42 each) of the rooms had ACH below the recommended standards. Detailed analysis showed that most of the rooms with natural ventilation had air exchange rates that exceeded the recommended standards, while the opposite was the case for rooms with air-conditioning, particularly the window or wall-mount type.
Indoor ventilation in high-risk nosocomial TB areas in public hospitals in Thailand was inadequate due to the installation of air-conditioning systems in modern buildings.
泰国中部的42家社区医院和综合医院。
评估泰国中部公立医院室内通风对预防医院内结核病的充足性。
对目标医院的323个患者护理和辅助区域进行横断面调查。采用示踪气体法收集室内通风率数据，并以每小时换气次数（ACH）表示。然后将测量的通风率与国际推荐标准值进行比较，以确定其充足性。
近一半的研究区域（144/323，44.6%）室内通风率不足。急诊室和放射科区域的通风不足问题尤为严重，其中各有73.8%（42间中的31间）的房间ACH低于推荐标准。详细分析表明，大多数自然通风的房间换气率超过推荐标准，而配备空调的房间，尤其是窗式或壁挂式空调房间则相反。
由于现代建筑中安装了空调系统，泰国公立医院高风险医院内结核病区域的室内通风不足。
