Does the conventional landmark help to place the tip of REBOA catheter in the optimal position? A non-controlled comparison study

Flow chart of patient inclusion in this study. Of the 1897 patients in two facilities, and among the 76 patients in whom REBOA was inserted, a total of 28 patients had taken a contrast CT. The inserted length of REBOA itself and the center line of the blood vessel from the common femoral artery to the tip of REBOA would be equivalent to the blood vessel length. We excluded one patient whose tip of REBOA did not reach aortic zone III and analyzed 27 patient