A Performance Assessment of Airborne Infection Isolation Rooms

Details

• Personal Author:
  Raynor PC ; Saravia SA ; Streifel AJ
• Description:
  Background: Airborne infection isolation rooms (AIIRs) help prevent the spread of infectious agents in hospitals. The performance of 678 AIIRs was evaluated and compared with construction design guidelines. Methods: The pressure differentials (DP) between the isolation rooms and adjacent areas were measured, and ventilation and construction details were recorded for each room. Ultrafine particle concentrations were evaluated in the rooms, surrounding areas, and ventilation systems serving the rooms. Measurements were analyzed as a function of room parameters. Results: Only 32% of the isolation rooms achieved the recommended DP of 22.5 Pascals (Pa) relative to surrounding areas. AIIRs with solid ceilings had an average DP of 24.4 Pa, which was significantly higher than the average DP of 22.0 Pa for rooms with dropped ceilings (P 5 .0002). Isolation room ultrafine particle concentrations were more highly correlated with particle levels in surrounding areas (R2 5 0.817) than in the ventilation systems serving the rooms (R2 5 0.441). Almost all ventilation filters serving AIIRs collected fewer particles than anticipated. Conclusion: The results indicate that hospitals are not all maintaining AIIRs to correspond with current guidelines. The findings also support the contention that having tightly sealed rooms helps maintain appropriate pressure differentials. [Description provided by NIOSH]
• Subjects:
  Air Pollutants, Occupational Construction Industry Construction Materials Environmental Health Environmental Monitoring Hazardous Substances Health Care Facilities Workforce And Services Inhalation Exposure Lung Occupational Health Particulate Matter Personal Protective Equipment Respiratory System Risk Assessment Risk Factors Safety Urogenital System Workplace

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• Keywords:
  Airborne-particles Biohazards Biological-effects Construction Construction-materials Control-technology Environmental-factors Exposure-assessment Exposure-levels Exposure-methods Health-care-facilities Inhalants Inhalation-studies Lung-irritants Mathematical-models Medical-facilities Particle-aerodynamics Particulate-sampling-methods Particulates Physiological-effects Pollutants Protective-measures Quantitative-analysis Reproductive-system Risk-analysis Risk-factors Statistical-analysis Work-environment

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• ISSN:
  0196-6553
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Minnesota ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  324-331
• Volume:
  35
• Issue:
  5
• NIOSHTIC Number:
  nn:20037371
• Citation:
  Am J Infect Control 2007 Jun; 35(5):324-331
• Contact Point Address:
  Peter C. Raynor, PhD, MSEE, Division of Environmental Health Sciences, University of Minnesota, Mayo MC 807, 420 Delaware St. SE, Minneapolis, MN 55455
• Email:
  praynor@umn.edu
• Federal Fiscal Year:
  2007
• Performing Organization:
  University of Minnesota Twin Cities
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  American Journal of Infection Control
• End Date:
  20250630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:fcbf1d7b307705d381f910a79eb644e51c000454488a9284463467c488be1143bd43a8d388e9132a940789305fd1b0435291c4dbb5e2ac45780e9311969d5e4f
• Download URL:
  https://stacks.cdc.gov/view/cdc/188472/cdc_188472_DS1.pdf
• File Type:
  [PDF - 419.36 KB ]