Senlin Chen, David A Dzewaltowski, Richard R Rosenkranz, Lorraine Lanningham-Foster, Spyridoula Vazou, Douglas A Gentile, Joey A Lee, Kyle J Braun, Maren M Wolff, Gregory J Welk
Feasibility study of the SWITCH implementation process for enhancing school wellness
BMC public health
visual expertise refers advanced visual skills demonstrated performing domainspecific visual tasks prior research emphasized fact medical experts rely perceptual patternrecognition skills interpreting medical images particularly field electrocardiogram ecg interpretation analyzing modeling cardiology practitioners visual behavior across different levels expertise health care sector crucial namely understanding acquirable visual skills may help train less experienced clinicians interpret ecgs accurately study aims quantify analyze use eyetracking technology differences visual behavior methodological practices different expertise levels cardiology practitioners medical students cardiology nurses technicians fellows consultants interpreting several types ecgs total 63 participants different levels clinical expertise took part eyetracking study consisted interpreting 10 ecgs different cardiac abnormalities counterbalanced withinsubjects design used one independent variable consisting expertise level cardiology practitioners two dependent variables eyetracking metrics fixations count fixation revisitations eye movements data revealed specific visual behaviors analyzed according accuracy interpretation frequency interpreters visited different partsleads standard 12lead ecg addition median sd iqr fixations count mean sd ecg lead revisitations calculated accuracy interpretation ranged 98 among consultants 87 among fellows 70 among technicians 63 among nurses finally 52 among medical students results eye fixations count eye fixation revisitations indicate less experienced cardiology practitioners need interpret several ecg leads carefully making decision however experienced cardiology practitioners rely skills recognize visual signal patterns different cardiac abnormalities providing accurate ecg interpretation results show visual expertise ecg interpretation linked practitioners role within health care system number years practical experience interpreting ecgs cardiology practitioners focus different ecg leads different waveform abnormalities according role health care sector expertise levels