RT Book, Section A1 Hsu, Jonathan A1 Scheinman, Melvin M. A2 Crawford, Michael H. SR Print(0) ID 1198112241 T1 Atrial Fibrillation T2 Current Diagnosis & Treatment: Cardiology, 6e YR 2023 FD 2023 PB McGraw Hill Education PP New York, NY SN 9781264643578 LK accesscardiology.mhmedical.com/content.aspx?aid=1198112241 RD 2024/10/15 AB ESSENTIALS OF DIAGNOSISAbsence of discrete P waves on the electrocardiogram.Irregularly irregular ventricular rhythm.