Der Anaesthesist
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The increasing use of cannulation of the internal jugular vein led to an increase of complications associated with this procedure. In most cases the reason is incorrect puncture. ⋯ The optimal site of puncture was detected with a sector scan by measuring volumes in both internal jugular veins in 12 patients dependent on the position and rotation of the head. As a result of our study we propose a modification in the cannulation technique with a headdown position and 45 degrees rotation of the head to the opposite site without palpating the carotid artery.