• Olivia Paradis, Lauren Bitterman, Kimberly H Park, Stacey Ernest, Amy Russell, Deena I Bengiamin, and Timothy P Young.
• Laboratory for Innovations in Medical Education, Loma Linda University School of Medicine, Loma Linda, California.
• J Emerg Med. 2022 Feb 1; 62 (2): 210-215.

BackgroundRadial arterial line placement is commonly performed in various clinical settings, including the emergency department. However, learners are successful on the first attempt only half of the time. Simulation can provide learners with procedure practice opportunities outside of clinical practice to increase confidence and chances of success.ObjectivesWe set out to build an arterial line trainer that would be inexpensive and reusable, wearable, anatomically realistic, and echogenic to allow for ultrasound use. We also hoped to devise a clear option that would allow for demonstration of procedure pitfalls.DiscussionThe arterial line trainer requires 4 hours of assembly time and costs $160. This includes enough material to make 48 tissue pads. The ballistics gel pad is echogenic; it can be customized with clear gel for direct anatomic visualization or dyed gel for more realism. The trainer also has a pulsatile artery for practice using anatomic landmarks. Visualization of the following important arterial line placement pitfalls is possible: suboptimal angle of approach, inadequate advancement of the catheter, and through-and-through vessel puncture.ConclusionsOur inexpensive trainer can help physicians and physicians in training conceptualize, practice, and troubleshoot the pitfalls of arterial line placement. Training programs looking to help learners understand the mechanics of arterial line placement may find it a useful tool.Copyright © 2021 Elsevier Inc. All rights reserved.

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