Saleh Solin, Uppal Sundeep, Sharma Vikas
College of Medicine University of Saskatchewan, Saskatoon, Sask., Canada;.
Department of Ophthalmology, University of Saskatchewan, Saskatoon, Sask., Canada.
Can J Ophthalmol. 2015 Oct;50(5):350-3. doi: 10.1016/j.jcjo.2015.06.004.
To determine whether greater nondominant hand proficiency, or handedness approaching ambidexterity, is associated with better two-handed anterior segment surgical outcomes.
Repeated-measures study.
Our study included 14 resident physicians from various medical specialties, including ophthalmology, from our academic institution.
The Eyesi surgical simulator was used to measure the surgical proficiency of 14 resident physicians at our institution on a dominant hand, nondominant hand, and separate bimanual task. The Edinburgh Handedness Inventory (EHI) was used to provide a measure of handedness for each participant.
The measured parameters were dominant hand, nondominant hand, and bimanual task scores as determined by the Eyesi surgical simulator and gradients of handedness as determined by the Edinburgh Handedness Inventory for each participant. Having greater nondominant hand proficiency did not enhance two-handed surgical outcomes (p = 0.23). Surgical proficiency was greater bimanually compared with use of the nondominant hand alone (median score 74.0 vs 61.0; p = 0.0007), and bimanual and dominant hand surgical performances were not statistically significantly different from each other (median score 74.0 vs 70.5; p = 0.17).
Our study shows that having greater nondominant hand proficiency is not a necessary trait for simulated anterior segment surgical aptitude. Two-handed surgical outcomes are directly related to dominant hand surgical performance but less so to the nondominant hand.
确定非优势手操作熟练程度更高或接近双手同利是否与双手前段手术的更好结果相关。
重复测量研究。
我们的研究纳入了来自我们学术机构的14名住院医师，他们来自包括眼科在内的各个医学专业。
使用Eysi手术模拟器测量我们机构的14名住院医师在优势手、非优势手和单独的双手任务上的手术熟练程度。使用爱丁堡手性量表（EHI）来衡量每位参与者的手性。
测量参数为每位参与者由Eysi手术模拟器确定的优势手、非优势手和双手任务得分，以及由爱丁堡手性量表确定的手性梯度。非优势手操作熟练程度更高并不会提高双手手术结果（p = 0.23）。与单独使用非优势手相比，双手操作的手术熟练程度更高（中位数得分74.0对61.0；p = 0.0007），并且双手和优势手的手术表现彼此之间无统计学显著差异（中位数得分74.0对70.5；p = 0.17）。
我们的研究表明，非优势手操作熟练程度更高并非模拟前段手术能力的必要特征。双手手术结果与优势手手术表现直接相关，但与非优势手的相关性较小。
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