Fun with electricity: A novel ballistics gelatin model with LED tracking for ultrasound needle guidance

被引:0
|
作者
Wallace, Elizabeth R. [1 ]
Gregoski, Mathew J. [2 ]
Shah, Aalap [3 ]
机构
[1] Med Univ South Carolina, Coll Med, Charleston, SC USA
[2] Med Univ South Carolina, Dept Publ Hlth Sci, Coll Med, Charleston, SC USA
[3] Med Univ South Carolina, Dept Emergency Med, 169 Ashley Ave MSC 300, Charleston, SC 29425 USA
基金
美国国家卫生研究院;
关键词
PHANTOM; COST; RELIABILITY; PERFORMANCE; SIMULATION; VALIDITY;
D O I
10.1002/aet2.11018
中图分类号
R4 [临床医学];
学科分类号
1002 ; 100602 ;
摘要
BackgroundUse of ultrasound (US) for procedural needle guidance can improve success rates, safety, and accuracy. Often, training is performed on task trainers, which can be prohibitively expensive. Determining undesired needle placement is difficult when the needle is poorly visualized with US. Currently available simulation phantoms cannot provide real-time feedback on the location of needle placement.ObjectivesThe primary objective was to develop and determine feasibility of a low-cost simulation phantom with an internal circuit and LED light system to determine when a needle contacts internal structures. We also aimed to determine whether its use was associated with increased comfort level.MethodsEmergency medicine (EM) residents (PGY-1 to PGY-3) performed in-plane and out-of-plane US needle guidance using homemade phantoms. Comfort levels were assessed by pre- and post intervention survey. Outcomes were measured on Likert scale (minimum = 1, maximum = 5). The primary outcome was change in confidence markers before and after the simulation task. Secondary outcomes were survey results of comparisons of these models to prior training experiences on simulators and humans.ResultsAll EM residents (30) in our program were invited to participate. Twenty participants enrolled and completed the study. In the primary outcome, median comfort with out-of-plane and in-plane guidance increased after using the model but was more pronounced for out-of-plane guidance. On a posttest survey, residents rated the models overall very similar to prior experience on simulators (median 5/5 [IQR 4.0-5.0]) and moderately similar to humans (median 3/5 [IQR 3.0-4.0]).ConclusionsWe created a low-cost ballistic gelatin phantom with an internal electric needle guidance system. Use of the phantom for training was associated with increased learner comfort with the procedure. Learners rated the characteristics of the phantom as similar to higher-cost commercial equipment and humans.
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页数:7
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