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KMID : 0356920160690010015
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Korean Journal of Anesthesiology
2016 Volume.69 No. 1 p.15 ~ p.20
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The effect of electromagnetic guidance system on early learning curve of ultrasound for novices
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:Kim Eun-Jung
:Min Ji-young/:Byon Hyo-Jin/:Song Jeong-Yun/:Song Kyung-Chul/:Song Jang-Ho
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Abstract
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Background : Electromagnetic guidance reveals needle alignment and position relative to the image plane on an ultrasound view. This study compared the early learning curves of novices performing ultrasound-guided needle placement with (n = 10) or without electromagnetic guidance (n = 10).
Methods : Participants performed 30 ultrasound-guided needle placements using an echogenic stick (0.3-cm diameter) as a target inside a phantom model; this early learning period was divided into sequential periods (P1: 1?5, P2: 6?10, P3: 11?15, P4: 16?20, P5: 21?25, P6: 26?30 attempts).
Results : Using an in-plane approach, the time required for needle placement in the EMG group was significantly shorter than that of the non-EMG group in P1, P2, P4, and P6 and the number of needle advances of the EMG group was significantly smaller than that of the non-EMG group in P1 and P2. Using an out-of-plane approaches, the time required for needle placement in the EMG group was significantly shorter than that of the non-EMG group in all periods, but the number of needle advances was similar between both groups in P1?P5.
Conclusions : The electromagnetic guidance system may be beneficial when performing ultrasound guided peripheral nerve blocks or vascular cannulation in the early learning period, especially by inexperienced operators with reducing patient risk.
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KEYWORD
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Electromagnetic fields, Learning curve, Ultrasonography
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