Hung-Lin Hsu ¹ Chung-Han Ho ^2,3 Ying-Jia Lin ³ Kang-Ting Tsai ^4,5 Pei-Chi Yang ¹ Shu-Lien Hsu ^6,7 An-Chi Peng ⁶ Chien-Chin Hsu ^1,8 Sam Yu-Chieh Ho ^1,4 Chien-Cheng Huang ^1,10,8,9*

• ¹ Department of Emergency Medicine, Chi Mei Medical Center, Tainan, Taiwan
• ² Department of Medical Research, Chi Mei Medical Center, Yongkang, Tainan County, Taiwan
• ³ Department of Information Management, Southern Taiwan University of Science and Technology, Tainan, Taiwan
• ⁴ Division of Geriatrics and Gerontology, Department of Internal Medicine, Chi Mei Medical Center., Tainan, Taiwan
• ⁵ Department of Senior Services, Southern Taiwan University of Science and Technology, Tainan, Taiwan
• ⁶ Department of Nursing, Chi Mei Medical Center, Tainan, Taiwan
• ⁷ School of Nursing, College of Health Care, China Medical University, Taichung, Taiwan
• ⁸ School of Medicine, College of Medicine, National Sun Yat-sen university., Kaohsiung, Taiwan
• ⁹ Department of Emergency Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
• ¹⁰ Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan, Tainan County, Taiwan

Aim: Transitional care in the emergency department (ED) has the potential to improve outcomes for older patients, but the specific population benefits from it and impact in Taiwan remain unclear. Therefore, we conducted this study.Methods: An interdisciplinary team comprising emergency physicians, dedicated transitional care nurse (TCN), nurse practitioners, nurses, geriatricians, and social workers was established at a tertiary medical center. TCN conducted screenings of ED patients (≥75 years) awaiting hospitalization to identify those in need of social or care support and aid as required. The team held regular meetings to address transitional care challenges. A retrospective analysis was conducted, comparing patients who received transitional care with those who did not, between February 1, 2022, and October 31, 2022, followed by a three-month outcome assessment.We successfully implemented a novel ED transitional care model, involving 183 patients with TCN assistance and 374 patients without. Compared to patients without TCN, those with TCN were older, had more underlying comorbidities, required more nasogastric feeding and Foley indwelling, and had higher rates of hospice and palliative care. The common needs for TCN included providing home care instructions to a foreign caregiver (38.4%), long-term care referral (30.0%), care instructions for family members of older adults in long-term care facilities (26.3%), social worker referral (3.2%), and home healthcare referral (2.1%). Follow-up analysis showed no significant outcome differences between the two cohorts.The model we implemented identified the population benefiting from this service. Despite the frailty of patients receiving TCN, their outcomes were not inferior, suggesting the potential benefits of TCN for this population. Further research is warranted.