A motion has passed unanimously.
Nurses may go on strike later this year, if action isn't taken to address unsafe staffing.
An emergency motion on the matter passed unanimously at the INMO conference in Kerry this afternoon.
It called for all members of the nursing union to be balloted this coming September, unless significant progress is made before then.
Members say they need to ensure the "catastrophic impact of events endured last winter" is not repeated.
Meanwhile, the HSE is to move away from the 'winter plan' format and create a new system to deal with year-round problems facing emergency departments.
Its Chief Executive says a new strategy will take effect from June, which aims to 'consistently' respond to issues with urgent care.
594 patients are waiting on trolleys - with eight without a bed in Mullingar and two in Portlaoise.
CEO of the HSE Bernard Gloster says the problem will not fix the current issues within EDs, but will alleviate some of the pressures:
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