[1] Xie Xiaojian, Li Yuguo, Sun Hequan, Liu Li, et al. Droplet generation due to two health care procedures [J]. Journal of Southeast University (English Edition), 2010, 26 (2): 274-278. [doi:10.3969/j.issn.1003-7985.2010.02.029]

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Droplet generation due to two health care procedures()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

26

Issue:

2010 2

Page:

274-278

Research Field:

Biological Science and Medical Engineering

Publishing date:

2010-06-30

Info

Title:

Droplet generation due to two health care procedures

Author(s):

Xie Xiaojian¹;  Li Yuguo²;  Sun Hequan²;  3;  Liu Li²

¹School of Power Engineering, Nanjing Normal University, Nanjing 210042, China
²Department of Mechanical Engineering, the University of Hong Kong, Hong Kong, China
³Department of Military Oceanography, Dalian Naval Academy, Dalian 116018, China

Keywords:

droplet;  taking nasopharyngeal aspirates(NPA);  nebulizer therapy;  infection transmission

PACS:

R183.3;X513

DOI:

10.3969/j.issn.1003-7985.2010.02.029

Abstract:

Preliminary experiments are carried out to characterize the droplets generated in two aerosol-generating health care procedures, i.e.taking nasopharyngeal aspirates(NPA)and nebulizer therapy.Glass slides and water-sensitive paper(WSP)are used to collect large droplets when taking NPA.Droplet stain-marks on glass slides are counted under a microscope, and then a size analysis is performed.During nebulizer therapy dust monitors are used to detect small droplets and droplet nuclei at different positions around the nebulizer and in the room.From the preliminary results it is found that taking NPA can stimulate coughing and generate large droplets.Nebulizers can generate more than tens of millions fine droplets ranging from 0.3 to 20 μm per minute, a large volume of which can escape from the holes on the nebulizer’s facemask and disperse in the whole room.Droplets coagulate on the inner surface of the mask and the volunteer’s face, suggesting a great possibility of drug solution contamination by patients’ secretion during nebulizer therapy.

References:

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Memo

Memo:

Biography: Xie Xiaojian(1981—), female, doctor, associate professor, xxjtulip@gmail.com.
Foundation item: The Project of Research Grants Council of the Hong Kong Special Administrative Region(No.HKU7150/06).
Citation: Xie Xiaojian, Li Yuguo, Sun Hequan, et al.Droplet generation due to two health care procedures[J].Journal of Southeast University(English Edition), 2010, 26(2):274-278.

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