 Objectives: To compare, regardless of the number of venous puncture attempts, peripheral venous access obtained in children, according to VUS use or traditional method for peripheral intravenous catheter PIC insertion; assertiveness in the use of PIC in children, defined as success in the first attempt of puncture and PIC withdrawal according to release of treatment, related to VUS or traditional method and to describe the influence of VUS on PIC dwell time and development of local complications related to the use of intravenous therapy in children. 