Tampo Akihito
Department of Emergency Medicine, Asahikawa Medical University, 2-1-1-1 Midorigaoka-Higashi, Asahikawa, Hokkaido, 078-8510, Japan.
J Med Ultrason (2001). 2018 Oct;45(4):671-673. doi: 10.1007/s10396-018-0885-y. Epub 2018 Jun 13.
Real-time ultrasound guidance for central venous catheterization has become a standard technique. This technique has been reported to yield high success rates and fewer complications compared with landmark techniques. However, it can be risky when the practitioner does not possess proper knowledge and skills. Lose sight of the needle tip can lead to severe complications such as arterial puncture or pneumothorax. Also, posterior wall penetration of the target vessels must be avoided. Misplacement of the catheter to other vessels can sometimes occur, and may only be discovered after the catheterization procedure. To avoid these complications, we perform a three-step procedure to place an internal jugular vein catheter under ultrasound guidance. The three steps are: (a) advance the needle tip to the internal jugular vein with a short-axis image with an out-of-plane technique, (b) rupture the anterior wall by using a long-axis image with an in-plane technique, and (c) confirm the guidewire position from the internal jugular vein to the brachiocephalic vein using a short-axis image, and a coronal image from the supraclavicular fossa. For safe needle advancement and penetration of the anterior wall of the vein, combined use of short-axis and long-axis images is helpful, and guidewire placement should be confirmed by scanning with the short-axis image and the coronal image.
实时超声引导下的中心静脉置管已成为一种标准技术。据报道,与体表标志技术相比,该技术成功率高且并发症少。然而,当操作者不具备适当的知识和技能时,它可能存在风险。看不到针尖可能会导致严重并发症,如动脉穿刺或气胸。此外,必须避免穿透目标血管的后壁。导管有时会误置入其他血管,且可能仅在置管操作后才被发现。为避免这些并发症,我们在超声引导下采用三步法放置颈内静脉导管。这三个步骤是:(a) 采用平面外技术通过短轴图像将针尖推进到颈内静脉;(b) 采用平面内技术通过长轴图像刺破前壁;(c) 使用短轴图像以及锁骨上窝的冠状图像确认导丝从颈内静脉到头臂静脉的位置。为了安全地推进针头并穿透静脉前壁,联合使用短轴和长轴图像是有帮助的,并且应通过短轴图像和冠状图像扫描来确认导丝的放置。