Table 3: Flows analysis results.

IJV flow before cannulationIJV flow after cannulationAbsolute variationIJV flow variation rate
Mean Mean

IJV 0°Apex −36.90.14−1.8%0.44
Base −68.20.01−5.5%0.14
IJV 30°Apex −25.10.12−2.7%0.31
Base −26.40.18−0.4%0.90