• W A Soong.
• Department of Anaesthesia, Mater Misericordiae Hospital, Brisbane, Queensland.
• Anaesth Intensive Care. 1999 Oct 1; 27 (5): 493-6.

AbstractThere have been several reports of propofol becoming extrinsically contaminated with bacteria. These reports have usually related to infusions or delays in administration after the ampoule has been opened. This observational study was performed to examine bacterial contamination of propofol during usual practice in the operating theatres of a single large hospital group. One hundred samples of propofol were collected and cultured. Samples were taken immediately after administration in cases where the delay between opening the ampoule and administration was at least 15 minutes. The samples were classified according to whether the propofol was kept in the ampoule or a syringe after opening the ampoule and whether the intended use was for a single patient or multiple patients. The time between opening the ampoule and administration was recorded. There were three positive bacterial cultures. These samples all came from ampoules used for more than one patient, without the later dose (does) being drawn into a syringe at the time the ampoule was opened. This common clinical practice, especially in paediatric anaesthesia, does not comply with the manufacturer's recommendations. The clinical significance of the bacterial contamination detected is not clear. It is recommended that propofol should be handled in an aseptic fashion and measures taken to minimize the risk of bacterial contamination.

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