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2 results on '"Omidi, Leila"'

1. Association of Sick Building Syndrome with Indoor Air Parameters

Author

Jafari, Mohammad Javad, Khajevandi, Ali Asghar, Mousavi Najarkola, Seyed Ali, Yekaninejad, Mir Saeed, Pourhoseingholi, Mohammad Amin, Omidi, Leila, and Kalantary, Saba

Subjects
Sick Building Syndrome, Offices, Parameters, Indoor air, Original Article
Abstract

Background: Energy crisis in 1973 led to smaller residential and office buildings with lower air changes. This resulted in development of Sick Building Syndrome (SBS). The objective of this study was to assess the association of SBS with individual factors and indoor air pollutants among employees in two office buildings of Petroleum Industry Health Organization in Tehran city. Materials and Methods: The association between personal and environmental factors and SBS symptoms was examined by a reliable and valid combined questionnaire. Environmental parameters were measured using calibrated instruments. Results: The results suggested that SBS symptoms were more common in women than men. Malaise and headache were the most common symptoms in women and men. Throat dryness, cough, sputum, and wheezing were less prevalent among employees in both offices. Light-intensity was significantly associated with some symptoms such as skin dryness (P = 0.049), eye pain (P = 0.026), and malaise (P = 0.043). There were no significant differences in prevalence of SBS symptoms between female workers of the two offices (P>0.05) Conclusion: The main causes of SBS among the employees were recycling of air in rooms using fan coils, traffic noise, poor lighting, and buildings located in a polluted metropolitan area.

Published
2015

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

Author

Jafari, Mohammad Javad, Hajgholami, Mohammad Reza, Omidi, Leila, Jafari, Mina, Tabarsi, Payam, Salehpour, Soussan, and Amiri, Zohre

Subjects
ARTIFICIAL respiration, AIRBORNE infection, INDOOR air quality
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. [ABSTRACT FROM AUTHOR]

Published
2015

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