Transcript
- [Instructor] This video is for demonstration
and educational purposes only.
Please follow your own institutional guidelines
on sterility and safety.
A linear array transducer
with an arterial exam type
is used to perform an ultrasound-guided insertion
of a radial artery catheter via a transverse approach.
The patient is in a supine position
with the arm abducted 45 degrees and externally rotated.
The wrist is extended by placing a small roll
beneath the wrist crease.
The transducer is placed transversely
just proximal to the wrist crease,
with the orientation marker directed to the patient's right.
The radial artery is superficial and seen as an anechoic,
round, pulsatile structure on the lateral aspect
of the wrist amid static, echodense material.
There are two radial veins that accompany the radial artery,
which can be compressed with gentle transducer pressure.
The radius bone can be seen as a hyperechoic structure
approximately one centimeter posterior to the radial artery.
Adjust the transducer so it is centered
over the radial artery.
With the needle positioned just superior to the transducer,
slowly insert the needle
next to the centerline 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 radial artery.
Confirm that the needle tip lies
in the mid-portion of the artery
by rotating the probe 90 degrees
to get an in-plane longitudinal view
of the needle within the artery.
手順：超音波ガイド下橈骨動脈アクセス
動脈検査用のリニアアレイトランスデューサーを用いて、横方向アプローチによる橈骨動脈カテーテルの超音波ガイド下挿入を行います。
