The Nurses Organisation's warning busy wards brought on by an extension to hospital visitor hours could be detrimental

Health New Zealand's announced the policy, which will allow family members to be nominated to support patients in hospital 24/7, outside visiting hours.

Healthcare Assistant and Nurses Organisation delegate Al Dietschin says lots of hospitals have multi-bed rooms.

He says having one or two family members present for each person all the time will crowd the room, making it hard for patients to rest.