[Wastage of anesthetic related drugs in a university hospital].

Background: The cost of wasted anesthetic related agents has not been clear in Japanese hospitals. We investigated whether the trainees in anesthesiology influence the cost of wasted anesthetic related agents.
Methods: Investigation was carried out at the University of Tokyo Hospital. We interviewed each trainee in anesthesiology about all prepared anesthetic drugs and wasted ones at the end of each anesthetic management.
Results: The percentage of wasted ampoules of anesthetic related agents was 15.85%, but the percentage of wasted cost was 5.15%. A large difference was not observed in transition of training period, and this percentage was not improved by training. We considered that this wasted cost is within permissible ranges in comparison with other reports.
Conclusions: During the training it is also important to develop a sense of medical economics.