The accelerated reduction and elimination of toxics in Canada: The case of mercury-containing medical instruments in Quebec hospital centres

Abstract

In Canada, medical instruments containing mercury (Hg) are still widely used in hospitals. These are mostly thermometers and sphygmomanometers. Mercury present in these instruments does not in itself constitute a risk of contamination since this metal is contained within a closed system. However, breakage, inadequate maintenance and disposal of such instruments can expose workers and the public to this toxic substance. In Quebec, 80% of the 28 hospitals surveyed still use Hg sphygmomanometers and 45% Hg thermometers. Besides, 35% do not have any recovery procedures in case of spillage and most mercury spills are apparently not reported. Two main courses of action are recommended: the gradual replacement of these medical instruments by aneroid sphygmomanometers and electronic thermometers, and the establishment and communication, in the form of a handbook, of guidelines to handle and dispose of mercury safely.