Shafqat Atif, Ferguson Eamonn, Thanawala Vishal, Bedforth Nigel M, Hardman Jonathan G, McCahon Robert A
From the University Department of Anesthesia and Intensive Care, Queen's Medical Centre, Nottingham University Hospitals NHS Trust, University of Nottingham, Nottingham, United Kingdom (A.S., V.T., N.M.B., J.G.H., R.A.M.); and School of Psychology, Personality, Social Psychology and Health (PSPH) Research Group, University of Nottingham, Nottingham, United Kingdom (E.F.).
Anesthesiology. 2015 Nov;123(5):1188-97. doi: 10.1097/ALN.0000000000000870.
Visuospatial ability correlates positively with novice performance of simple laparoscopic tasks. The aims of this study were to identify whether visuospatial ability could predict technical performance of an ultrasound-guided needle task by novice operators and to describe how emotional state, intelligence, and fear of failure impact on this.
Sixty medical student volunteers enrolled in this observational study. The authors used an instructional video to standardize training for ultrasound-guided needle advancement in a turkey breast model and assessed volunteers' performance independently by two assessors using composite error score (CES) and global rating scale (GRS). The authors assessed their "visuospatial ability" with mental rotation test (MRT), group embedded figures test, and Alice Heim group ability test. Emotional state was judged with UWIST Mood Adjective Checklist (UMACL), and fear of failure and general cognitive ability were judged with numerical reasoning test.
High CES scores (high error rate) were associated with low MRT scores (ρ = -0.54; P < 0.001). Better GRS scores were associated with better MRT scores (ρ = 0.47; P < 0.001). Regarding emotions, GRS scores were low when anxiety levels were high (ρ = -0.35; P = 0.005) and CES scores (errors) were low when individuals reported feeling vigorous and active (ρ = -0.30; P = 0.01).
An MRT predicts novice performance of an ultrasound-guided needling task on a turkey model and as a trait measure could be used as a tool to focus training resources on less-able individuals. Anxiety adversely affects performance. Therefore, both may prove useful in directing targeted training in ultrasound-guided regional anesthesia.
视觉空间能力与新手在简单腹腔镜任务中的表现呈正相关。本研究的目的是确定视觉空间能力是否可以预测新手操作者在超声引导下的穿刺任务中的技术表现，并描述情绪状态、智力和对失败的恐惧如何影响这一表现。
60名医学生志愿者参与了这项观察性研究。作者使用教学视频对在火鸡胸部模型中进行超声引导下穿刺推进的训练进行标准化，并由两名评估者使用综合误差评分（CES）和整体评分量表（GRS）独立评估志愿者的表现。作者使用心理旋转测试（MRT）、团体镶嵌图形测试和爱丽丝·海姆团体能力测试评估他们的“视觉空间能力”。使用UWIST情绪形容词检查表（UMACL）判断情绪状态，使用数字推理测试判断对失败的恐惧和一般认知能力。
高CES评分（高错误率）与低MRT评分相关（ρ = -0.54；P < 0.001）。更好的GRS评分与更好的MRT评分相关（ρ = 0.47；P < 0.001）。关于情绪，焦虑水平高时GRS评分低（ρ = -0.35；P = 0.005），而当个体报告感觉精力充沛和活跃时CES评分（错误）低（ρ = -0.30；P = 0.01）。
MRT可预测新手在火鸡模型上进行超声引导下穿刺任务的表现，作为一种特质测量方法，可作为一种工具，将训练资源集中于能力较差的个体。焦虑会对表现产生不利影响。因此，两者可能都有助于指导超声引导区域麻醉的针对性训练。
