In response to the education and teaching reform, West China School of Medicine/West China Hospital, Sichuan University, initiated a general course on clinical engineering technology assessment and evaluation for the undergraduates in 2018. Through the course practice in the past two years, the number of students increased significantly, and we also achieved certain teaching achievements. At the same time, the teaching evaluation among undergraduates was excellent. Nevertheless, there are still certain deficiencies in the content of teaching, teaching methods and faculty. Therefore, this article summarizes the experience and lessons since the start of the course, and proposes corresponding teaching reform measures, providing reference for the establishment or reform of related interdisciplinary courses such as clinical engineering technology assessment and evaluation in the future.
ObjectiveTo explore the main failure components related to maintenance cost and downtime of gastrointestinal endoscopy.MethodsThe analytic hierarchy process (AHP) was used to process and analyze the maintenance data of gastrointestinal endoscopy in West China Hospital of Sichuan University from January 2010 to April 2019.ResultsThe results involved 110 gastrointestinal endoscopy, 322 major repairs, 364 minor repairs, and a total of 1 651 failed components, in which the top three components were buttons (380 pieces, 23.02%), the insertion tubes (223 pieces, 13.51%), and lenses (179 pieces, 10.84%). The main failure components causing high maintenance cost and long downtime of major repairs were charge coupled devices (F=849.702, P<0.001; F=9.525, P=0.002) and light guides (F=8.190, P=0.005; F=6.384, P=0.012). The failure components affecting the maintenance cost of minor repair were lenses (F=25.464, P<0.001) and angle steel wires (F=5.652, P=0.018). The failure components prolonging the maintenance time of minor repair were lenses (F=10.384, P=0.001) and electrical interfaces (F=4.816, P=0.029).ConclusionQuantitative analysis of maintenance data is helpful to objectively analyze the main failure components of maintenance cost and downtime.
ObjectiveTo investigate the neural mechanisms of subjects with anisometropic amblyopia using event-related potential (ERP) technology.MethodsNineteen subjects diagnosed with anisometropic amblyopia were consecutively recruited from the outpatients of the West China Hospital of Sichuan University from June 2013 to February 2014, and twenty normal subjects were recruited as control subjects. All subjects were given different orientation Gabor stimuli with three spatial frequencies (1, 2, 8 cpd) and their ERP was recorded. The differences of P3b, including amplitude and latency, were compared between amblyopic eye and fellow or control eye.ResultsAmong the three groups of amblyopic eye and fellow or control eye, there was no statistically significant difference in accuracy or response time at three spatial frequencies (P>0.05), in latency or amplitude of P3b at low spatial frequencies (1, 2 cpd) ((P>0.05), or in amplitude of P3b at high spatial frequency (8 cpd) (P>0.05). P3b latency of amblyopic eye extended at high spatial frequency (8 cpd), compared to fellow or control eye. Amblyopic eye was most significantly weakened in Brodmann area 17 at the P3b wave of each spatial frequency (1, 2, 8 cpd), and there was most significantly weakened in high spatial frequency (8 cpd).ConclusionThe P3b latency of amblyopic eye extended at high spatial frequency suggests that the cognitive function of amblyopia is impaired, at an extent, in the late visual processing stage.