• Cagdas Ince, Muge Gulen, Selen Acehan, Sarper Sevdimbas, Muhammet Balcik, Ali Yuksek, and Salim Satar.
• Clinic of Emergency Medicine, Health Sciences University Adana City Training and Research Hospital, Adana, Yuregir, 01370, Turkey.
• Ir J Med Sci. 2023 Dec 1; 192 (6): 272727342727-2734.

BackgroundVarious scores have been derived for the assessment of syncope patients in the emergency department (ED).AimWe aimed to compare the effectiveness of Canadian Syncope Risk Scores (CSRS), San Francisco Syncope Rules (SFSR), and Osservatorio Epidemiologico sulla Sincope nel Lazio (OESIL) risk scores in predicting the risk of major adverse cardiac events (MACE) and mortality among syncope patients within 30 days of the initial ED visit.MethodsWe performed a prospective, observational case series study of adults (≥ 18 years) with unexplained syncope/near-syncope who presented to ED. Demographic characteristics of the patients and clinical and laboratory data were recorded in the standard data collection form of the study. Our primary outcome was a 30-day mortality.ResultsA total of 421 patients (mean age 50.9 ± 20.8, 51.5% male) were enrolled. The rate of MACE development in the 30-day follow-up of the patients was 12.8% (n = 54). While 20.2% (n = 85) of the patients were hospitalized, two of the patients died in the emergency room and the 30-day mortality was 5.5% (n = 23). CSRS was found to have the highest predictive power of mortality (AUC: 0.869, 95% CI 0.799-0.939, p < 0.001). If the cut-off value of CSRS was 0.5, the sensitivity was found to be 82.6% and the specificity was 81.9%. Also CSRS (OR: 1.402, 95% CI: 1.053-1.867, p = 0.021) was found to be an independent predictor of the 30-day mortality.ConclusionThe CSRS may be used as a safety risk score for a 30-day risk of MACE and mortality after discharge from the emergency department.© 2023. The Author(s), under exclusive licence to Royal Academy of Medicine in Ireland.

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