TY - CHAP M1 - Book, Section TI - Pericardial Effusion A1 - Huis in ‘t Veld, Maite A. A1 - Mattu, Amal A1 - Thurman, R. Jason A2 - Knoop, Kevin J. A2 - Stack, Lawrence B. A2 - Storrow, Alan B. A2 - Thurman, R. Jason PY - 2021 T2 - The Atlas of Emergency Medicine, 5e AB - Sinus tachycardiaLow voltage of QRS complex (QRS averaging < 5 mm height in limb leads or < 10 mm height in precordial leads)Electrical alternans (beat-to-beat change in electrical axis and/or amplitude of the QRS complex) SN - PB - McGraw-Hill CY - New York, NY Y2 - 2024/03/29 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=1181052814 ER -