A revamped system to help Victoria's hospital emergency departments and ambulances communicate will be rolled-out to ease overcrowding.

Health Minister David Davis says the IT system, which is currently being trialled, will help emergency departments manage incoming patients.

"We're confident that the additional information will help our emergency departments to plan better," Mr Davis said.

The system is due to be installed in a couple of weeks and is just one of the short-term measures the state government is taking to reduce congestion at emergency departments.

The move comes after the widow of a man who died while being shuffled around in an ambulance between busy hospitals demanded the government fix a brewing health system crisis.

The 71-year-old man had waited on an ambulance trolley at the Frankston Hospital emergency department for two hours in June, before his chest pain worsened.

He suffered a heart attack and, for unknown reasons, was then transferred to the Monash Medical Centre, but died on the way, the ambulance union said.

Mr Davis said more beds had been opened at local hospitals and "a suite of other measures" would be announced soon.

On Wednesday, work officially began on a big upgrade to the Frankston Hospital that will increase in-patient capacity and almost double the size of the emergency department.