We read with great interest the study recently published by Wu et al., investigating the incidence of catheter-related thrombosis (CRT) in the largest cohort of critically ill patients thus far [
1]. The authors screened by ultrasound (US) the venous district immediately before and daily after the placement of a central venous catheter (CVC), and reported a CRT incidence of 16.9% (213/1262), mostly affecting the left side and the internal jugular vein, which accounted for the 54% of CVCs. …