Objective: Full-year, reproducible operational profiles derived from hospital information systems are rarely reported. This study aimed to describe a 2025 institution-level emergency department operational profile derived from a hospital information management system.
Material and Methods: We performed a retrospective, descriptive, single-center analysis of aggregated, de-identified outputs for all presentations to adult/general, pediatric, and obstetric/gynecology emergency units between January 1 and December 31, 2025. Indicators included visit volume and triage category; laboratory test-ing, imaging, and consultation activity; mean triage-to-first-physician waiting time by shift; observation unit length-of-stay categories; quarterly 24-hour revisits with the same diagnosis; and the 50 most frequently assigned International Classification of Diseases, 10th Revision diagnosis codes, grouped by chapter.
Results: There were 1,421,126 presentations; the triage distribution was 68.9% green, 28.3% yellow, 2.8% red, and 0.006% black. Resource use increased with acuity (lab-oratory testing: 9.7%, 21.5%, and 58.0%; any imaging: 13.7%, 39.0%, and 78.3% for green, yellow, and red triage, respectively). The mean triage-to-first-physician waiting time was 12.0 minutes overall and 5.5 minutes overnight (00:00–08:00). Observation stays totaled 268,847, of which 89.8% lasted 0–2 hours. The 24-hour revisit rate was 1.44%, increasing from 1.09% (January–March) to 1.62% (October–December).
Conclusion: Aggregated hospital system outputs can support a reproducible operational dashboard describing demand, acuity-stratified care processes, flow, early returns, and diagnostic mix for monitoring and benchmarking.
Keywords: Crowding, emergency service, health services research, hospital information systems, triage
, Cem Yıldırım1 
