What are the criteria that determine when a catheter is a high flow catheter? I am confused by the INS standard that lumps HD and apheresis catheters under this heading. Many catheters are marketed as HD catheters and many are marketed as central VADs that happen to be appropriate for apheresis. Is there a criteria for determining when a catheter should be packed with 10, 100, 100units/ml heparin or something else? I'm concerned that if this isn't more clear, patients will be inadvertently bolused with therpeutic doses of heparin during routine dressing changes because of confusion over the type of line that is in place. IFUs are not helpful as they invariably refer back to hospital policy for packing solutions.
One fix is to always require that staff aspirate twice the volume of the catheter prior to flushing, but I still think it would be helpful to know what criteria determines the ideal solution/concentration of packing solution.
What does everyone think?