ATP測定法による診察室の汚染実態および看護師と清掃者の意識調査

摘要

外来診察室を対象にATP測定法を用いた業務前後の汚染度調査を行い、実測値から8箇所、計11の環境表面に対する汚染度を評価した。また、看護師と清掃者の意識の差異や意識と環境表面汚染度との関係を明らかにすることを目的として外来診察室を担当する看護師および清掃者に汚染に対する意識調査を行った。%Contact infection is known to be the main route of health-care associated infection. To prevent transmission of contact infections, environmental surfaces must be cleaned to get rid of contamination. It is important to use scientific methods to estimate the degree of contamination on examination room surfaces in order to determine which areas should be intensively cleaned. A field measurement was conducted using an Adenosine tri-phosphate (ATP) measurement method (EnSURB® & SuperSnap™; Hygiena) of 11 surfaces in two examination rooms. The handrail of the doctor's chair has a significantly greater contamination than the patient's chair (before and after the work: p ＜ 0.01) because the doctor's chair was about twofold greater contact frequency in the mean. The handrail of the doctor's chair were highly contaminated before and after the work. The doctor's chair had uneven surface that seems one of the reason of its high-contamination. The levels of contamination in these areas can be decreased by changing the timing and/or the frequency of cleaning. The attitude survey showed that medical staff are attentive to high touching surface but cleaning staff are attentive to dust-collecting surface. Surface contamination level can be decreased by changing cleaning staff consciousness.