Akoma Ugochi N, Shumard Kristina M, Street Linda, Brost Brian C, Nitsche Joshua F
Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina USA (U.N.A., K.M.S., L.S., J.F.N.); and Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota USA (B.C.B.).
J Ultrasound Med. 2015 Oct;34(10):1793-9. doi: 10.7863/ultra.15.14.12004. Epub 2015 Aug 31.
The purpose of this study was to construct an inexpensive anatomy-based obstetric ultrasound task trainer and investigate whether introduction of this trainer into a hands-on obstetric ultrasound course improved course participants' ultrasound scanning skills.
The trainer was created by placing fetal pigs into preservative-filled heat-sealed polyethylene bags. Twenty-four participants in an obstetric ultrasound course at Wake Forest School of Medicine were randomized to receive hands-on scanning with pregnant women or hands-on scanning and fetal pig simulation. Biometric scans were performed before and after the course. The time to complete the scans, margin of error of biometric measurements, and number of technically adequate images per scan were compared between groups.
Twelve participants were randomized into each group. Although a direct comparison of postcourse biometric scans demonstrated no difference between groups, participants that received simulation training showed significant improvements in the time to complete the biometric scan (P < .05) and number of technically adequate images obtained (P < .05), whereas those who did not receive simulation training did not show significant improvements.
Addition of the fetal pig ultrasound task trainer resulted in improvements in the course participants' scanning efficiency even after very limited exposure. Incorporating the task trainer earlier and more broadly into obstetric ultrasound training may benefit trainees.
本研究的目的是构建一种低成本的基于解剖学的产科超声任务训练器，并调查将该训练器引入产科超声实践课程是否能提高课程参与者的超声扫描技能。
通过将胎猪放入装有防腐剂的热封聚乙烯袋中制作训练器。维克森林医学院产科超声课程的24名参与者被随机分为两组，一组接受对孕妇的实践扫描，另一组接受实践扫描和胎猪模拟扫描。在课程前后进行生物特征扫描。比较两组完成扫描的时间、生物特征测量的误差范围以及每次扫描获得的技术上合格图像的数量。
每组有12名参与者。虽然课程后生物特征扫描的直接比较显示两组之间没有差异，但接受模拟训练的参与者在完成生物特征扫描的时间（P < 0.05）和获得的技术上合格图像的数量（P < 0.05）方面有显著改善，而未接受模拟训练的参与者则没有显著改善。
即使经过非常有限的接触，添加胎猪超声任务训练器也能提高课程参与者的扫描效率。更早、更广泛地将任务训练器纳入产科超声培训可能会使学员受益。
