RT Book, Section A1 Boyd, Jeremy S. A1 Melton, Myles A1 Rupp, Jordan D. A1 Ferre, Robinson M. A2 Knoop, Kevin J. A2 Stack, Lawrence B. A2 Storrow, Alan B. A2 Thurman, R. Jason SR Print(0) ID 1181488437 T1 Procedural Guidance: Ultrasound-Guided Venous Access T2 The Atlas of Emergency Medicine, 5e YR 2021 FD 2021 PB McGraw-Hill PP New York, NY SN 9781260134940 LK accessemergencymedicine.mhmedical.com/content.aspx?aid=1181488437 RD 2024/04/24 AB Vascular access is a necessity for evaluation and treatment of many patients in the ED. Traditionally, knowledge of common venous anatomy in experienced hands was the standard method of obtaining venous access. Factors such as obesity, prior access, and volume depletion can increase the difficulty of the conventional approach. This increased difficulty not only leads to failure to obtain access, but also increases the risk of complications.