 Insert the introducer
into subcutaneous tissue in the customary manner. Flush the needle to remove any
air bubbles that may have collected as the needle passed through the skin. The
doppler enables you to hear arterial or venous flow as you approach the
vessel. |
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Note: These are not streaming files. For smooth playback please download sound files to your hard drive,
then play (Netscape users: right-click and Save link as..., Internet Explorer users:
right-click and Save target as...)
 Move the tip in a circular
motion, slowly sweeping (scanning) while listening for the desired flow sounds.
When the doppler detects the flow sound - STOP! Scan for maximum arterial or
venous signal. Intensity of the sound increases as the needle advances toward the
vessel. |
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