Heparin 100 U/mL in the maintenance of peripheral venous catheters was more effective
than saline solution, in that it reduced the number of catheter-related phlebitis/occlusions and the number
of catheters per patient, with potential advantages to both patients and the health system. It also appeared
safe. However, subjects with platelet or coagulation defects were excluded, and, therefore, caution should
be used when prescribing this type of catheter maintenance to patients at risk of bleeding.