The incidence of unintentional arterial puncture during cannulation of femoral vein was high(20-50%). The addition of knee flexion to abcudtion-exorotation position (frog position) have been shown to increase the cross sectional area of femoral vein. The purpose of this study is to compare the distance between femoral artery and vein in frog position, abduction-exorotation position and anatomical position.~This study is an analytical observational study with cross sectional design within one grup with repeated measurement. The distance between artery and vein was measured in three position. The measurement was taken twice for each position. First picture was taken by one operator and one ultrasonography for all patient. Then another operator measured the distances with caliper feature on the ultrasonograph.
The purpose of this study is to compare the distance between femoral artery and vein in frog position, abduction-exorotation position and anatomical position.