1. Pollution of the medical air at a university hospital in the metropolitan Tokyo area.
- Author
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Nakata Y, Kawasaki Y, Matsukawa K, Goto T, Niimi Y, and Morita S
- Subjects
- Carbon Monoxide analysis, Humans, Nitric Oxide analysis, Nitrogen Dioxide analysis, Operating Rooms, Prospective Studies, Sulfur Dioxide analysis, Time Factors, Tokyo, Ventilation, Air Pollution, Indoor analysis, Hospitals, University
- Abstract
Study Objective: To investigate the quality of medical air in a hospital in the metropolitan area., Design: Prospective study., Setting: University hospital in the metropolitan Tokyo area., Interventions: Medical air introduced into a bio-clean operating room was sampled., Measurements: The concentrations of nitric monoxide (NO), nitrogen dioxide (NO(2)), sulfur dioxide (SO(2)), and carbon monoxide (CO) in the medical air were measured every 30 minutes for 15 days., Main Results: The concentrations (mean +/- SD) of NO, NO(2), SO(2), and CO were 34.4 +/- 35.0 ppb (range 0-200 ppb), 7.7 +/- 5.5 ppb (0-29 ppb), 33.8 +/- 2.9 ppb (21-46 ppb), and 1.65 +/- 0.87 ppm (0.5-7.5 ppm), respectively. The concentrations of these gases peaked at rush hours within a day., Conclusions: In the metropolitan area, we occasionally provide our patients with medical air of poor quality.
- Published
- 2002
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