Airborne contamination control through directed airflow in the exam room: A pilot study using a membrane diffuser

Debajyoti Pati, Michael P. Pietrzak, David Duthu, Ting Kwo George Lei, David Vincent, Tom Franklin, Thomas E. Harvey, Troy Ransdell

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Airborne infections have been documented as a major source of hospital acquired infection - one of the major concerns in healthcare delivery. An important factor contributing to airborne infection is cross contamination through air particulate dispersion as affected by the ventilation system design. Clean room technology (with membrane ceiling) has been successfully used in technology and pharmaceutical industries to control airborne contamination. This study examined the performance of membrane ceiling technology in controlling air particulate dispersion in a mock-up exam room. It included both performance tests in a mock-up room and a simulation study of six different ventilation system designs using Computational Fluid Dynamics (CFD) analysis. Findings suggest that a membrane diffuser directed airflow ventilation strategy occupying approximately 20% to 30% of the ceiling surface and placed over the patient in a contemporary sized exam room provides a less turbulent airflow pattern and less mixing of the air between the patient and others in the room.

Original languageEnglish
Pages (from-to)655-674
Number of pages20
JournalJournal of Healthcare Engineering
Volume1
Issue number4
DOIs
StatePublished - Dec 2010

Keywords

  • Emergency department
  • HVAC system
  • Infection control
  • Membrane ceiling

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