Evans Annie, Shevlin Sean, Burckett-St Laurent David, Bowness James, Kearns Rachel J, MacFarlane Alan
General Surgery, West of Scotland Foundation Deanery, Glasgow Royal Infirmary, Glasgow, GBR.
Anaesthesia, Belfast Health and Social Care Trust, Belfast, GBR.
Cureus. 2023 Jun 9;15(6):e40197. doi: 10.7759/cureus.40197. eCollection 2023 Jun.
Introduction Needle insertion and visualisation skills needed for ultrasound (US)-guided procedures can be challenging to acquire. The novel NeedleTrainer device superimposes a digital holographic needle on a real-time US image display without puncturing a surface. The aim of this randomised control study was to compare the success of trainees performing a simulated central venous catheter insertion on a phantom either with or without prior NeedleTrainer device practice. Methods West of Scotland junior trainees who had not performed insertion of a central venous catheter were randomised into two groups (n=20). Participants undertook standardized online training through a pre-recorded video and training on how to handle a US probe. Group 1 had 10 minutes of supervised training with the NeedleTrainer device. Group 2 were a control group. Participants were assessed on needle insertion to a pre-defined target vein in a phantom. The outcome measures were the time taken for needle placement (secs), number of needle passes (n), operator confidence (0-10), assessor confidence (0-10), and NASA task load index score. Results The mean mental demand score in the control group was 7.65 (SD 3.5) compared to 12.8 (SD 2.2, p=0.005) in the NeedleTrainer group. There was no statistical difference between the groups in any of the other outcome measures. Discussion This was a small pilot study, and small participant numbers may have impacted the statistical significance. There is natural variation of skill within participants that could not have been controlled for. The difference in pressure needed using the NeedleTrainer compared to a real needle may impact the outcome measures.
引言 超声（US）引导操作所需的进针和可视化技能可能难以掌握。新型针训练器设备可将数字全息针叠加在实时超声图像显示器上，而无需刺穿表面。本随机对照研究的目的是比较学员在有无使用针训练器设备进行预练习的情况下，在模拟人体模型上进行中心静脉导管插入操作的成功率。方法 未进行过中心静脉导管插入操作的苏格兰西部初级学员被随机分为两组（n = 20）。参与者通过预先录制的视频进行标准化在线培训以及关于如何操作超声探头的培训。第1组使用针训练器设备进行10分钟的监督训练。第2组为对照组。对参与者在模拟人体模型中插入针至预先定义的目标静脉的情况进行评估。结果测量指标为针放置所需时间（秒）、进针次数（n）、操作者信心（0 - 10）、评估者信心（0 - 10）以及美国国家航空航天局任务负荷指数得分。结果 对照组的平均心理需求得分为7.65（标准差3.5），而针训练器组为12.8（标准差2.2，p = 0.005）。在其他任何结果测量指标上，两组之间均无统计学差异。讨论 这是一项小型试点研究，且参与者数量较少可能影响了统计显著性。参与者自身技能存在自然差异，无法进行控制。与真实针相比，使用针训练器所需的压力差异可能会影响结果测量指标。
