Yamamoto T, et al. - In this study performed on pediatric patients with congenital heart diseases who underwent cardiovascular surgery, researchers intended to find out a simple and practical way to predict the ideal central venous catheter insertion depth following the real-time ultrasound-guided right internal jugular vein, or left or right supraclavicular approach in pediatric patients. Whereas they found no significant difference in ideal central venous catheter insertion depths for the right internal jugular vein approach and the left supraclavicular approach, a significantly shorter ideal central venous catheter insertion depth was reported for the right supraclavicular approach as compared with that of the other two approaches. Using only the real-time ultrasound-guided insertion technique, a visually simple and practical bar graph to predict the ideal central venous catheter depth inserted was successfully identified for the right internal jugular vein, left supraclavicular, and right supraclavicular approaches in this study.