J Med Assoc Thai 1999; 82 (2):186

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Anatomical Landmark for Internal Jugular Vein Catheterization for Detection of Jugular Venous 02 Saturation (Sjv02) in Thai People
Sripairojkul B Mail, Oewsakul T , Adultrakoon A

Thirty-two (32) cadavers were dissected to find the anatomical landmark for puncturing
the internal jugular vein. The point for the right internal jugular vein was 2 em above and 2.17 em
lateral to the right clavicular head, and that for the left internal jugular vein was 2 em above and
2.08 em lateral to the left clavicular head. The right internal jugular vein was found to dominate
eighty-eight per cent (88%) of the cadavers. The anatomical point 2 em above and 2 em lateral to
the head of the clavicle was appropriate for puncturing the internal jugular vein. After puncturing
the internal jugular vein, a catheter was inserted ascending to the jugular bulb where jugular venous
O2 saturation (Sjv O2) related to the cerebral metabolism was detected.
Key word : Internal Jugular Vein Catheterization, Jugular Venous O2 Saturate, Anatomical Landmark, Thai People

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