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Validation of the effectiveness of augmented reality-assisted vascular puncture: An experimental model.
Journal of Vascular Access 2023 Februrary 28
PURPOSE: To demonstrate that the augmented reality-assisted puncture technique improves the efficacy of ultrasound-guided puncture to get central venous access (CVA), allows the image to be obtained without limitations, freeing the hands and keeping the gaze continuously on the working field, which contributes to improving the safety of the procedure.
MATERIAL AND METHODS: A gelatin mould with a latex surface and a chicken breast with silicone tubes inside were used to simulate vascular punctures. Images were obtained by an ultrasound scanner and post-processed with a specific software. A hologram was obtained and projected onto the previously delimited surface to be punctured. The variables related to image acquisition, the characteristics of the structure to be cannulated and the percentage of successes in the first attempt were analysed. Six operators were involved, using different ultrasound scanners. Efficiency was examined after the application of technical improvements in the process.
RESULTS: Seventy-six punctures were performed, guided by two different ultrasound scanners, divided into two groups: 37 with 33 successes (sigma = 3.52 with a process efficiency of 97.98%) and after technical improvements, 39 with 38 successes (sigma = 4.07 with a process efficiency of 99.4%). There are no significant differences among the operators (X2 p = 0.47) and between the ultrasound scanners (X2 p = 0.56).
CONCLUSIONS: The augmented reality ultrasound-assisted CVA technique may be the next step in standardising the process of cannulation of vascular structures. This technique provides greater accuracy, greater comfort by freeing the hands and keeping the gaze on the working field, better ultrasound image quality, and eliminates variability between operators and sonographers.
MATERIAL AND METHODS: A gelatin mould with a latex surface and a chicken breast with silicone tubes inside were used to simulate vascular punctures. Images were obtained by an ultrasound scanner and post-processed with a specific software. A hologram was obtained and projected onto the previously delimited surface to be punctured. The variables related to image acquisition, the characteristics of the structure to be cannulated and the percentage of successes in the first attempt were analysed. Six operators were involved, using different ultrasound scanners. Efficiency was examined after the application of technical improvements in the process.
RESULTS: Seventy-six punctures were performed, guided by two different ultrasound scanners, divided into two groups: 37 with 33 successes (sigma = 3.52 with a process efficiency of 97.98%) and after technical improvements, 39 with 38 successes (sigma = 4.07 with a process efficiency of 99.4%). There are no significant differences among the operators (X2 p = 0.47) and between the ultrasound scanners (X2 p = 0.56).
CONCLUSIONS: The augmented reality ultrasound-assisted CVA technique may be the next step in standardising the process of cannulation of vascular structures. This technique provides greater accuracy, greater comfort by freeing the hands and keeping the gaze on the working field, better ultrasound image quality, and eliminates variability between operators and sonographers.
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