RT Book, Section A1 Miller, Chadwick D. A2 Cline, David M. A2 Ma, O. John A2 Cydulka, Rita K. A2 Meckler, Garth D. A2 Handel, Daniel A. A2 Thomas, Stephen H. SR Print(0) ID 56272093 T1 Chapter 20. Low Probability Acute Coronary Syndromes T2 Tintinalli's Emergency Medicine Manual, 7e YR 2012 FD 2012 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-178184-8 LK accessemergencymedicine.mhmedical.com/content.aspx?aid=56272093 RD 2024/04/24 AB Patients with chest pain or other symptoms suggesting coronary ischemia require stratification based upon the probability of acute coronary syndrome (ACS) for proper treatment and disposition. This chapter discusses the features of low probability ACS, or possible ACS. By definition, patients classified into this group have no objective evidence of acute coronary ischemia or infarction—no characteristic electrocardiogram (ECG) ST-segment elevation or depression, and normal levels of cardiac markers.