Effect of Ventilation on Occupational Exposure to Airborne Biological Contaminants in an Isolation Room

Effect of Ventilation on Occupational Exposure to Airborne Biological Contaminants in an Isolation Room

Jafari MJ¹ ; Hajgholami MR¹ ; Omidi L² ; Jafari M³ ; Tabarsi P⁴ ; Salehpour S⁵ ; Amiri Z⁶

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1. Department of Occupational Health Engineering, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2. Department of Occupational Health Engineering, Tehran University of Medical Sciences, Tehran, Iran
3. Department of Pathology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
4. Mycobacteriology Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
5. Occupational Medicine, Chronic Respiratory Diseases Research Center, NRITLD, Tehran, Iran
6. Biostatistics Department, Shahid Beheshti University of Medical Sciences, Tehran, Iran

Source: Tanaffos Published:2015

Abstract

Background: Airborne pathogens play an important role in a hospital air quality. Respiratory infections are the most common occupational disease among the health care staff. The aim of this study was to determine the effect of ventilation system parameters and patient bed arrangements on concentration of airborne pathogens in indoor air of an isolation room. Materials and Methods: A single-bed room was considered in which a patient diagnosed with tuberculosis had been admitted. Five different ventilation types, each at four different capacities were installed in the room while two different locations for the patient’s bed were assessed. A direct-impact sampling method (blood agar plate) was used in order to determine the intensity of the bio-aerosols in indoor air of the isolation room. Results: The results showed that when the air was supplied through a circular vent located on the northern wall and the vented air was exhausted via a linear vent located on the southern wall, the average concentration of the bio-aerosols in the air, (with 12 air changes per hour) was reduced to 25 colonies per cubic meter (cfu/m3) (in the range of 25-88 cfu/m3 and a 95 percent confidence interval). In accordance with the analysis applied upon the two different locations of the bed, no significant difference was observed (P>0.05). Conclusion: Installation of ventilation systems as determined by the study is recommended for tuberculosis isolation rooms. © 2015 NRITLD.

Style	Citing Format
MLA	Jafari MJ, et al.. "Effect of Ventilation on Occupational Exposure to Airborne Biological Contaminants in an Isolation Room." Tanaffos, vol. 14, no. 2, 2015, pp. 141-148.
APA	Jafari MJ, Hajgholami MR, Omidi L, Jafari M, Tabarsi P, Salehpour S, Amiri Z (2015). Effect of Ventilation on Occupational Exposure to Airborne Biological Contaminants in an Isolation Room. Tanaffos, 14(2), 141-148.
Chicago	Jafari MJ, Hajgholami MR, Omidi L, Jafari M, Tabarsi P, Salehpour S, Amiri Z. "Effect of Ventilation on Occupational Exposure to Airborne Biological Contaminants in an Isolation Room." Tanaffos 14, no. 2 (2015): 141-148.
Harvard	Jafari MJ et al. (2015) 'Effect of Ventilation on Occupational Exposure to Airborne Biological Contaminants in an Isolation Room', Tanaffos, 14(2), pp. 141-148.
Vancouver	Jafari MJ, Hajgholami MR, Omidi L, Jafari M, Tabarsi P, Salehpour S, et al.. Effect of Ventilation on Occupational Exposure to Airborne Biological Contaminants in an Isolation Room. Tanaffos. 2015;14(2):141-148.
BibTex	@article{ author = {Jafari MJ and Hajgholami MR and Omidi L and Jafari M and Tabarsi P and Salehpour S and Amiri Z}, title = {Effect of Ventilation on Occupational Exposure to Airborne Biological Contaminants in an Isolation Room}, journal = {Tanaffos}, volume = {14}, number = {2}, pages = {141-148}, year = {2015} }
RIS	TY - JOUR AU - Jafari MJ AU - Hajgholami MR AU - Omidi L AU - Jafari M AU - Tabarsi P AU - Salehpour S AU - Amiri Z TI - Effect of Ventilation on Occupational Exposure to Airborne Biological Contaminants in an Isolation Room JO - Tanaffos VL - 14 IS - 2 SP - 141 EP - 148 PY - 2015 ER -

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Abstract