
Amsterdam Leiden Intensive care Focused Echography, interested in: #POCUS #TTE #TOE #CriticalCareEcho #Echo. Tweeted by @cvelzokraemer
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ALT a When the needle is guided into the scan plane, b the first point of brightness to appear is the needle tip. c Next, the scan plane is moved slightly forward, which causes the point of brightness to disappear. d The needle is again advanced slowly into the scan plane, which causes a point of brightness to reappear. e Repeating this manipulation, needle gradually reaches the target vein. f When the needle tip touches anterior wall of the vein, it creates a small dimple, turning the vein into a heart shape. Pushing the needle into the vein with a snapping motion allows it to move a short distance so that it only penetrates the anterior wall. (Venous pressure is normally low; thus, if the needle is pressed slowly into the anterior wall and the tip reaches the posterior wall, it could penetrate the posterior wall as well) g Finally, anterior wall returns to its original shape, the shaft comes into view, and the tip can no longer be seen. h To see the tip, move the scan line forward.



















































