A record number of people were seen at Hawke's Bay Hospital's Emergency Department on Monday last week.
The hospital saw 188 presentations to its ED over 24 hours, forcing some planned care operations to be postponed.
Chief medical and dental officer Robin Whyman said the hospital was experiencing very high demand with the majority of presentations being serious medical conditions that needed hospital admission and care – most of the patients were aged over 50.
Emergency Department head Mark Barlow said the unprecedented demand may be a predictor for the coming winter months and urged people to be proactive about their health.
"With winter approaching we want people to think about their health and to take steps to get medical attention if they began to feel unwell," he said.