Document Detail

A computer evaluation of ventilation performance in a negative-pressure operating theater.
MedLine Citation:
PMID:  17000803     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: A negative-pressure operating theater is required to limit the spread of respiratory diseases in patients with severe acute respiratory syndrome, tuberculosis, avian influenza, or similar infectious diseases. In Hong Kong, we converted a conventional operating theater into a negative-pressure operating theater that has been in service for more than a year. In this article, we introduce its ventilation design and evaluate the airflow performance in relation to different combinations of medical lamp configurations and modes of launching infectious particles into the room air. METHODS: We used a computational fluid dynamics technique for the numerical analysis. RESULTS: Our analyses showed that the airflow performance in the negative-pressure operating theater was satisfactory and comparable to the original positive-pressure design. The airflow pattern effectively controlled the dispersion of infectious particles. Our calculations demonstrated that the airflow contained the dispersion of infectious particles released from the patient sufficiently to protect the surgical team, and vice versa. CONCLUSIONS: Computational fluid dynamics can be used to assess airflow in a negative-pressure operating room and model the dispersion of infectious particles from the patient.
Tin-tai Chow; Anne Kwan; Zhang Lin; Wei Bai
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Publication Detail:
Type:  Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Anesthesia and analgesia     Volume:  103     ISSN:  1526-7598     ISO Abbreviation:  Anesth. Analg.     Publication Date:  2006 Oct 
Date Detail:
Created Date:  2006-09-26     Completed Date:  2006-10-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  1310650     Medline TA:  Anesth Analg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  913-8     Citation Subset:  AIM; IM    
Division of Building Science and Technology, City University of Hong Kong, China.
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MeSH Terms
Computer Simulation
Computer-Aided Design
Environment, Controlled*
Infection Control / methods*
Models, Biological*
Operating Rooms / methods*
Ventilation / methods*

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