"The reduction in deferrable elective surgery did reduce pressure on demand for beds.
"However, the wards remained under significant pressure."
Southland Hospital would maintain its low operation numbers for another week and the situation would then be reassessed, Cochrane said.
"Bookings for elective surgery are being closely monitored ... patients for the most part are incredibly understanding about postponements, but we know that the impact of a cancellation is huge, especially when wider family members make arrangements to support their whanau and these are changed, sometimes multiple times.
"Telling patients that they are being postponed is also very difficult for our staff to do, particularly when this becomes a regular occurrence."
Help was on its way for beleaguered wards, Cochrane said, as new graduate nurses would be starting work in both hospitals early next month.
"Staffing is expected to improve on both sites in March."
Dunedin Hospital emergency department clinical director Richard Stephenson said there had been a slight dip in numbers of patients during the holiday week, but demand at both Dunedin and Southland had quickly returned to the high pre-Christmas level.
"In particular, we have noticed a significant increase in our high acuity patients compared to 2019," Dr Stephenson said.
"High volumes of serious road trauma have been a major contributing factor ... the situation at Southland Hospital Emergency Department has been similar — however, without the high volume of serious road trauma."
The SDHB has emphasised that anyone who needed emergency care would receive it.
The board has long recognised issues with management of patient flow in its hospitals, and in recent times has instituted initiatives to try to ensure as many beds as possible are available each day.
Late last year it released draft details of an "escalation plan" to address delays in emergency departments, and involve all departments with recognising potential delays.
"Dunedin Hospital emergency department has frequent episodes of overcrowding that create practical obstructions to care, risk and distress to patients and families," a report to the board said.
"An overcrowded ED does not necessarily mean that the problem lies within that service, it is just that this is the point in the system where a flow problem becomes visible."