Further research should focus on its applicability in a clinical setting. The NASA-TLX questionnaire appears to be a reliable tool for measuring subjective workload. The scores obtained correctly represented the assumed influences of the examined covariates on the perceived workload. The new visualization technologies Visual Patient and Visual Clot resulted in significantly lower total raw NASA-TLX scores and all subscores, including high self-rated performance, when compared with conventional monitoring (all P<.001).Ĭonclusions: This study validated a modified raw NASA-TLX questionnaire for patient monitoring tasks. There was no gender difference regarding perceived workload ( P=.26). Standardized distraction resulted in higher rated total raw NASA-TLX scores ( P<.001) and subscores. Staff physicians rated significantly lower workload scores than residents ( P=.001), whereas nurse anesthetists did not show any difference in the same comparison ( P=.83). Good test performance and higher self-rated diagnostic confidence correlated significantly with lower raw NASA-TLX scores and the subscores (all P<.001). Results: We assessed a total of 1160 raw NASA-TLX questionnaires after performing specific patient monitoring tasks. We analyzed the raw NASA-TLX scores by fitting mixed linear regression models and univariate models with different covariates. The participants were resident and staff anesthesia and intensive care physicians, and nurse anesthetists with completed specialization qualification. In these already published studies, we compared conventional patient monitoring with two newly developed situation awareness–oriented monitoring technologies called Visual Patient and Visual Clot. All of them were conducted in three hospitals with a high standard of care in central Europe. Methods: In this pooled analysis, we evaluated raw NASA-TLX scores collected after performing patient monitoring tasks in four different investigator-initiated, computer-based, prospective, multicenter studies. Objective: This study aimed to validate a modified version of the raw NASA-TLX in patient monitoring tasks by investigating its correspondence with expected lower and higher workload situations and its robustness against nonworkload-related covariates. However, only few studies have investigated the validity of the NASA-TLX in the health care sector. Among the many methods available to assess perceived workload, the National Aeronautics and Space Administration Task Load Index (NASA-TLX) provides the most widely accepted tool. Reducing workload helps to free cognitive resources and thus influences human performance, which ultimately improves the quality of care. JMIR Bioinformatics and Biotechnology 23 articlesĮmail: Patient monitoring is indispensable in any operating room to follow the patient’s current health state based on measured physiological parameters.JMIR Biomedical Engineering 61 articles.JMIR Perioperative Medicine 69 articles.
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