INVESTIGATION OF NATURAL VENTILATION POTENTIAL IN DIFFERENT HOSPITAL WARDS AFFILIATED TO TEHRAN UNIVERSITY OF MEDICAL SCIENCES IN 2014

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SARMADI MOHAMMAD; YAGHMAEIAN KAMYAR; NABIZADEH RAMIN; NADDAFI KAZEM; SAEEDI REZA; YOUSEFZADEH SAMIRA

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Journal: IRAN OCCUPATIONAL HEALTH JOURNAL Year:2017 | Volume:14 | Issue:4 Page(s): 150-158

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Title

INVESTIGATION OF NATURAL VENTILATION POTENTIAL IN DIFFERENT HOSPITAL WARDS AFFILIATED TO TEHRAN UNIVERSITY OF MEDICAL SCIENCES IN 2014

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Keywords

NATURAL VENTILATIONQ1

INFECTION CONTROLQ1

AIR CHANGES PER HOURQ1

HOSPITALQ2

Abstract

Background and aims: The current conventional effective elements on transporting or reducing of airborne aerosols and building indoor air quality are NATURAL VENTILATION systems. NATURAL VENTILATION is supplying fresh air and cooling down by replacing ambient air which is one of the effective parameter on social hygiene and health aspect through controlling airborne pathogens and their related nosocomial infections in different part of life particularly in HOSPITALs; and is known as one of the cost-effective solutions in this field. The aim of this study is investigation of NATURAL VENTILATION potential in the different ward of Tehran University of Medical Sciences affiliated HOSPITALs.Methods: In this cross-sectional study, humidity, temperature, wind speed and room characteristics of 35 wards of 12 HOSPITALs affiliated to Tehran University of Medical Sciences which consisted a total of 269 rooms were investigated, and results were compared with related standards and guidelines. Investigated wards included infectious, blood, gastrointestinal and tuberculosis wards which have importance from airborne pathogens perspective. The correlation between ACH index and altitude, temperature and humidity along with wards classification to airborne and non-airborne sections, and evaluation of their ACH mean were conducted with Kruskal–Wallis and Fligner-Killeen test by R (version 3.2.0) and Excel 2013 software.Results: The minimum, maximum and average values of wind speed, humidity and temperature in airborn and non-airborn sections were measured as (0 and 2.9 m/s), (13.5% and 40%) and (24 and 30.7oC), respectively. Also, the means of ACH in airborne and non-airborne were 20.5 and 31, respectively. In addition, significant relations among the different parameters of study according to the Kruskal–Wallis test were observed (p<0.05).Conclusion: According to the obtained results of present study and comparing the results with related standards (ACH=12) indicated that opening of the doors and windows of rooms have high potential in reducing the nosocomial infection in studied HOSPITALs. Furthermore, more energy costs can be saved by using NATURAL VENTILATION in different wards.

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APA: Copy

SARMADI, MOHAMMAD, YAGHMAEIAN, KAMYAR, NABIZADEH, RAMIN, NADDAFI, KAZEM, SAEEDI, REZA, & YOUSEFZADEH, SAMIRA. (2017). INVESTIGATION OF NATURAL VENTILATION POTENTIAL IN DIFFERENT HOSPITAL WARDS AFFILIATED TO TEHRAN UNIVERSITY OF MEDICAL SCIENCES IN 2014. IRAN OCCUPATIONAL HEALTH JOURNAL, 14(4 ), 150-158. SID. https://sid.ir/paper/128939/en

Vancouver: Copy

SARMADI MOHAMMAD, YAGHMAEIAN KAMYAR, NABIZADEH RAMIN, NADDAFI KAZEM, SAEEDI REZA, YOUSEFZADEH SAMIRA. INVESTIGATION OF NATURAL VENTILATION POTENTIAL IN DIFFERENT HOSPITAL WARDS AFFILIATED TO TEHRAN UNIVERSITY OF MEDICAL SCIENCES IN 2014. IRAN OCCUPATIONAL HEALTH JOURNAL[Internet]. 2017;14(4 ):150-158. Available from: https://sid.ir/paper/128939/en

IEEE: Copy

MOHAMMAD SARMADI, KAMYAR YAGHMAEIAN, RAMIN NABIZADEH, KAZEM NADDAFI, REZA SAEEDI, and SAMIRA YOUSEFZADEH, “INVESTIGATION OF NATURAL VENTILATION POTENTIAL IN DIFFERENT HOSPITAL WARDS AFFILIATED TO TEHRAN UNIVERSITY OF MEDICAL SCIENCES IN 2014,” IRAN OCCUPATIONAL HEALTH JOURNAL, vol. 14, no. 4 , pp. 150–158, 2017, [Online]. Available: https://sid.ir/paper/128939/en

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