Victoria is the only state in Australia that doesn't have a comprehensive monitoring system, and the report said it was unable to provide complete figures, reports Herald Sun.
The Auditor-General's report Patient Safety in Public Hospitals estimated 135,000 patients had been exposed to medical mistakes, but concluded there could be more.
Of these cases, 97 were labelled "sentinel events", which include "procedures involving the wrong patient or body part, retained instruments after surgery and death from a medication error".
Health Minister Daniel Andrews said work had started on an appropriate monitoring system to be in place by 2010, reports Nick Higginbottom
But Opposition health spokeswoman Helen Shardey said 2010 was too late for patients.
"Despite a previous audit of patient safety in public hospitals in 2005 and a departmental review of quality and safety last year, there has been a distinct failure by the Government to implement all the recommendations," she said.
Premier John Brumby yesterday defended saying the state had seen improvement in the key indicators of ulcers, superbug infections and deaths.
"That's not to say there aren't issues. We welcome the Auditor-General's report and we will be implementing his recommendations," he said.
Source: Medindia
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