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Magnetic needle‐tracking device for ultrasound guidance of radial artery puncture: A randomized study on a simulation model
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International audience. Ultrasound-guidance of radial artery catheter insertion improves the first attempt success and reduces the occurrence of hematomas. Needle-tracking devices optimize needle-ultrasound beam alignment by displaying in real-time the needle tip position. We compared the median time need by experienced physicians to achieve radial artery puncture using either a conventional ultrasonography device (CUD) or a magnetic needle-tracking ultrasound device (MUD) in a simulation training arm model.Methods: Fifty experienced residents and physicians performed two punctures in randomized order with the CUD and the MUD. The primary outcome was puncture duration; the secondary outcomes were puncture success, rate of accidental vein puncture, and practitioner's comfort (subjective scale 0-10).Results: The median [lower-upper quartile] puncture time was 10 [6-14] seconds when using CUD and 4 [3-7] seconds when using MUD (P < .01). In the multivariate analysis, MUD use was associated with decreased puncture duration whatever the puncture order (OR 1.13 [1.07-1.20], P < .01). The participants performed 99 (99%) successful punctures: 50 with the MUD (100%) and 49 with the CUD (98%). There was no accidental venous puncture. The practitioner's comfort level was 6.5 [6, 7] with the CUD and 8 [7-9] with the MUD (P < .01).Conclusion: MUD reduced radial artery puncture time and improved physician comfort in a simulation training arm model.
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