The following checks should be carried out at the beginning of each operating theatre session. In addition, specific checks should be carried out before each new patient during a session or when there is any alteration or addition to the breathing system, monitoring or ancillary equipment. It is the responsibility of the anaesthetist to make sure that these checks have been performed, and the anaesthetist must be satisfied that they have been carried out correctly. In the event of a change of anaesthetist during an operating session, the status of the anaesthetic equipment must be confirmed, including that a formal check has been performed. Before using any anaesthetic equipment,.
