RT Book, Section A1 Leuck, Jo Anna A2 Cydulka, Rita K. A2 Fitch, Michael T. A2 Joing, Scott A. A2 Wang, Vincent J. A2 Cline, David M. A2 Ma, O. John SR Print(0) ID 1143139964 T1 Syncope T2 Tintinalli's Emergency Medicine Manual, 8e YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9780071837026 LK accessemergencymedicine.mhmedical.com/content.aspx?aid=1143139964 RD 2023/03/20 AB Syncope accounts for up to 2% of all emergency department (ED) visits and 6% of hospital admissions. Syncope is defined as a transient loss of consciousness accompanied by loss of postural tone, followed by complete resolution without intervention. Although syncope often is a benign vasovagal event, it may represent a life-threatening dysrhythmia or other condition, particularly in the elderly. Near-syncope, or feeling an impending loss of consciousness without syncope, may carry the same risk as syncope. In up to half of syncope cases presenting to the ED, there is no definite etiology established for the syncopal episode.