<p begin="00:00:07.010" end="00:00:09.026" style="s2">- [Voiceover] A linear array transducer</p>
<p begin="00:00:09.026" end="00:00:11.485" style="s2">with a venous exam<br />type, is used to perform</p>
<p begin="00:00:11.485" end="00:00:14.424" style="s2">an ultrasound guided<br />insertion of a subclavian</p>
<p begin="00:00:14.424" end="00:00:17.250" style="s2">vein catheter via an transverse approach.</p>
<p begin="00:00:17.250" end="00:00:19.487" style="s2">The patient is in a supine position</p>
<p begin="00:00:19.487" end="00:00:21.144" style="s2">with the head neutral.</p>
<p begin="00:00:21.144" end="00:00:24.198" style="s2">The operator should stand<br />to the patient's right side.</p>
<p begin="00:00:24.198" end="00:00:26.531" style="s2">The transducer is placed transversely</p>
<p begin="00:00:26.531" end="00:00:29.380" style="s2">just inferior to the mid<br />portion of the clavicle,</p>
<p begin="00:00:29.380" end="00:00:31.338" style="s2">with the orientation marker directed</p>
<p begin="00:00:31.338" end="00:00:34.428" style="s2">to the patient's head at<br />a 12 o'clock position.</p>
<p begin="00:00:34.428" end="00:00:36.407" style="s2">The hyperechoic clavicle can be seen</p>
<p begin="00:00:36.407" end="00:00:39.304" style="s2">in the superior portion<br />of the ultrasound image.</p>
<p begin="00:00:39.304" end="00:00:41.387" style="s2">The vein is dark, and anechoic,</p>
<p begin="00:00:41.387" end="00:00:43.977" style="s2">just inferior and deep to the clavicle.</p>
<p begin="00:00:43.977" end="00:00:47.219" style="s2">The transducer should be<br />slowly moved one to two inches</p>
<p begin="00:00:47.219" end="00:00:49.877" style="s2">toward the shoulder, with<br />the face of the transducer</p>
<p begin="00:00:49.877" end="00:00:52.685" style="s2">staying below the clavicle<br />to obtain the best view</p>
<p begin="00:00:52.685" end="00:00:55.397" style="s2">of the subclavian or axillary vein.</p>
<p begin="00:00:55.397" end="00:00:58.063" style="s2">It is important to note<br />that the lung lies directly</p>
<p begin="00:00:58.063" end="00:00:59.861" style="s2">posterior to the vessel.</p>
<p begin="00:00:59.861" end="00:01:02.691" style="s2">So, posterior wall puncture<br />of the axillary vein</p>
<p begin="00:01:02.691" end="00:01:04.214" style="s2">should be avoided.</p>
<p begin="00:01:04.214" end="00:01:07.472" style="s2">Adjust the transducer so it<br />is centered over the vein.</p>
<p begin="00:01:07.472" end="00:01:10.469" style="s2">Follow the needle entry by<br />slowly sliding the transducer</p>
<p begin="00:01:10.469" end="00:01:12.943" style="s2">in the direction of needle advancement.</p>
<p begin="00:01:12.943" end="00:01:16.832" style="s2">The needle will appear as a<br />small, bright, hyperechoic dot.</p>
<p begin="00:01:16.832" end="00:01:19.415" style="s2">When the needle tip<br />appears, the transducer</p>
<p begin="00:01:19.415" end="00:01:21.964" style="s2">should be advanced a<br />short distance distally</p>
<p begin="00:01:21.964" end="00:01:24.265" style="s2">to follow the tip of<br />the needle trajectory,</p>
<p begin="00:01:24.265" end="00:01:26.819" style="s2">and stay in advance of the needle entry.</p>
<p begin="00:01:26.819" end="00:01:28.455" style="s2">The needle is slowly advanced</p>
<p begin="00:01:28.455" end="00:01:30.590" style="s2">under direct ultrasound visualization</p>
<p begin="00:01:30.590" end="00:01:34.266" style="s2">until the tip is seen to<br />puncture the subclavian vein.</p>
<p begin="00:01:34.266" end="00:01:37.399" style="s2">The probe should be moved<br />slightly proximally and distally</p>
<p begin="00:01:37.399" end="00:01:39.357" style="s2">to confirm that the needle tip lies</p>
<p begin="00:01:39.357" end="00:01:41.940" style="s2">in the mid portion of the vein.</p>