TY - CHAP M1 - Book, Section TI - Left Anterior Fascicular Block 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 - QRS duration normal or slightly prolongedLeft axis deviation (without any other reasons for leftward axis on ECG)Small R wave and large S wave in the inferior leads (II, III, aVF)Small Q with a large R wave in the lateral leads (I, aVL) SN - PB - McGraw-Hill CY - New York, NY Y2 - 2024/10/03 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=1181052433 ER -