無菌層流ユニット運転下でナースの動作により発生した空気中浮遊微粒子と浮遊細菌数との関係

概要

論文の詳細を見る
In this study, we estimated the number of airborne microorganisms a patient might inhale while nurses dispersed particles during their care. Although the amenity in biological clean room (BCR) is of great importance for immunocompromised patients such as post bone marrow transplantation, taking care of a patient in BCR with direct contact or face-to-face is strictly limited in many facilities in Japan. Little was known about the actual risk of air contamination caused by nurses. We built a model of a patients room with HEPA filter unit in order to conduct an experimental study of bed making, which seems to generate the most particles among all nursing care behaviors. While changing bed cloths, we samples aerosol by M Air TTM to find colonies of bacteria and measured the number concentration of particles ( > 0.1 μm) by a laser particle counter. There was no significant correlation between colonies and particles (p-value > 0.05), although the colony data followed poisson distribution. The air exchange rate of the affected part seemed to be more important than the correlation. These findings allowed nurses with care ful preparation to provide positive care to patient in BCR.
日本エアロゾル学会の論文
2002-06-20