One hundred and counting: Centenarian use of emergency departments in New South Wales.

To study ED utilisation by people aged 100 years and over with a focus on patient demographics, reasons for presentation and patient flow factors. This is a retrospective descriptive analysis of linked ED Data Collection Registry for presentations to New South Wales (NSW) EDs over a 5 year period. Patients were included if they presented to an ED and were aged 100 years and over at the time of presentation. Demographics, triage category, presenting problem, ED length of stay, disposition and ED re-presentation were determined for this age group. A total of 4033 presentations to 115 NSW EDs during 2010-2014 were analysed. We found that 78% of the patients were females and 76% still living at home. This group were the second most common age group to present to ED, after the 90-99 year age group, with 87% arriving via ambulance. Most presentations were triaged as a category 3 or 4, with the most common presenting problem being because of injury (28.5%) followed by respiratory disease (11.4%) and cardiovascular disease (10.0%). Overall, 64% required hospital admission and the average length of stay for all patients was 5.7 h. Centenarians ED presentations are increasing over time with injuries as the most common reason for presentation. Most patients have prolonged ED length of stay and many require hospital admission. Early streaming of these patients through specialised geriatric assessment units may be more appropriate to reduce the demand on EDs and improve patient care. Models that facilitate rapid access to supported living arrangements and improved advanced care planning may be more realistic for many centenarians and different models of care need to be considered for this age group.

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