Assessing floor contamination by antineoplastic agents in a Japanese medical institution specializing in cancer treatment.

Introduction: This study investigated the extent of contamination with antineoplastic agents on floor surfaces of the ward and the outpatient chemotherapy center of a Japanese cancer center to evaluate healthcare workers' risk of occupational exposure to antineoplastic agents outside of the designated drug preparation areas.

Methods: In this study conducted at Aichi Cancer Center, the amount of fluorouracil detected on various floor surfaces was measured using liquid chromatography-tandem quadrupole mass spectrometry. Areas around the toilets were cleaned with a surfactant two or three times a day, whereas other floor surfaces were cleaned only with dry and wet mops.

Results: Fluorouracil was detected on all surveyed floor surfaces, with particularly high amounts detected around the toilet areas in the ward. Additionally, areas with more human traffic tended to have higher fluorouracil contamination.

Conclusions: This survey suggested that antineoplastic agent contamination occurring through patient excretions might spread throughout the hospital with human traffic. Therefore, controlling the spread of antineoplastic agent contamination in hospitals should include the review of measures to mitigate contamination around toilets and to implement effective cleaning methods for floor surfaces.