Fujifilm Sonosite Training Hub
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Transcript

- [Narrator] This video is for demonstration

and educational purposes only.

Please follow your own institutional guidelines

on sterility and safety.

A linear array transducer with a venous exam type

is used to perform an ultrasound guided insertion

of an internal jugular catheter via a transverse approach.

The patient is in a supine position

with the head slightly turned

towards the contralateral side.

The operator is positioned at the head of the bed.

The transducer is placed transversely just below the apex

of the sternocleidomastoid muscle triangle,

with the orientation marker directed to the operator's left

at a nine o'clock position.

The most superficial structure identified

in the ultrasound image is the sternocleidomastoid muscle.

Deeper to this, the internal jugular vein

will appear as an anechoic elliptical shape

that is compressible with transducer pressure.

In contrast, the anechoic circular artery will be pulsatile.

The thyroid gland lies medial to these structures

and has a light gray echo signature.

In the ultrasound image, the internal jugular vein

will appear superficial to the carotid artery.

Adjust the transducer so the internal jugular vein

is centered within the ultrasound image.

With the needle positioned just superior to the transducer,

slowly insert the needle next to the center line

on the transducer.

The needle will appear as a small bright dot

in the ultrasound image.

When the needle tip appears,

slide the transducer a short distance away,

until the tip is no longer visible.

Once again, advance the needle slowly

until it is visible in the ultrasound image.

Repeat the process to ensure that the needle tip is advanced

under direct ultrasound guidance.

Continue advancing the needle

until the tip is seen to indent

and then puncture the internal jugular vein.

Confirm that the needle tip

lies in the mid portion of the jugular vein

by rotating the probe 90 degrees

to get an in plane longitudinal view of the needle

within the jugular vein.

手順:超音波ガイド下内頸静脈中心静脈カテーテル挿入法

このトレーニング動画では、静脈検査用プリセットが設定されたリニアアレイトランスデューサーを用いた、超音波ガイド下内頸静脈カテーテル挿入の手技を実演しています。この手技は、患者を仰臥位にし、頭を対側に向けて横方向のアプローチで行われ、 操作者はベッドの頭側に立ち、プローブを胸鎖乳突筋三角の下に配置し、マーカーを9時の方向に向けます。 超音波画像では、胸鎖乳突筋が最も表層の構造として確認され、内頸静脈は、より円形を呈し脈動が認められる頸動脈の表層に位置する、圧迫可能な無エコーの楕円形構造として映し出されます。一方、甲状腺は内側に位置し、より明るい灰色のエコーパターンを示しており、周囲の血管解剖構造の識別に役立ちます。 リアルタイムの針誘導は、プローブのすぐ上方へ針を進め、針先を明るい点として可視化しながら、プローブを断続的にスライドさせて針先を再配置し、超音波による直接視認の下で繰り返し針を進め、穿刺の全過程を通じて針先の追跡を維持することで行われます。

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