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Survey of biological and non biological airborne particles in selective wards of Qazvin Shaheed Rajaee and Velayat hospital, Iran during 2017

Choubdar, Mohadeseh and Nikpey, Ahmad and Safari Variani, Ali (2018) Survey of biological and non biological airborne particles in selective wards of Qazvin Shaheed Rajaee and Velayat hospital, Iran during 2017. Masters thesis, Qazvin University of Medical Sciences, Qazvin, Iran.

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Abstract

Backgrand and aim: The prevalence of hospital infections is widespread and serious throughout the world, affecting the health of patients, staff and even the community. Due to the importance of air quality in the occurrence of such infections, aim of the present study was to survey of biological and non biological airborne particles in selective wards of Qazvin Shaheed Rajaee and Velayat hospitals. Material and Methods: This descriptive-analytical study was performed in 13 wards of two hospitals and ambient air, during the winter and spring seasons. Bioaerosols sampling was done by Quick Take 30 sampler base on NIOSH method 0800 and EPA standard, in 5-10 min. Number and density of PM0.3, PM2.5 and PM10, CO2 concentration, temperature and humidity ratio were determined by direct monitoring devices. Results: ICU and the operating room’s wards have the cleanest air, highest biological particles contaminations was observed in emergency room and patient lift elevators. Spp. of A. niger, Cladosporium and Penicillium were the most frequency species. Concentration of PM2.5 and PM10, in all wards, in spite of operating rooms, exceed the EPA and WHO permissible limits. Counts of PM0.3 in women's surgery, emergency rooms, and elevators were more than ISO acceptable levels. A significant correlation between biological particles concentration with density and number of non-biological particulate matter (p<0.05). There was a significant relationship between fungal density, temperature and humidity ratio (p<0.05). Washing, number of people, bed sheets replacement and windows status were related in particulate matters contaminations (p<0.05). Conclusion: In Shahid Rajaee Hospital, air microbial contamination was more than ambient air (I/O>1). In Velayat Hospital, entering of contaminated outdoor air was the main reason of the high density of biological particles. Measurement of particles densities and counts can be used as an easy, inexpensive and quick tool for predicting of microbial air quality in hospital. In order to control the microbial growth, it is recommended to improve the ventilation system, use of air purifier systems, preventing overcrowding, education and continual assessment of indoor air quality. Keywords: Hospital, Air Pollution, Particulate Matters, Cross Infection, Fungi.

Item Type: Thesis (Masters)
Subjects: R Medicine > RN Health > RN1003 Occupational Health
Divisions: University Thesis > Faculty of Health > Professional Health
Depositing User: Health School Students
Date Deposited: 20 Jun 2019 05:28
Last Modified: 20 Jun 2019 05:28
URI: http://eprints.qums.ac.ir/id/eprint/8761

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