(2) Although heparin is routinely prescribed for maintaining catheter patency from simple peripheral intravenous catheters to central venous catheters and usually for arterial catheters as well ...
guidelines recommend that intravenous unfractionated heparin (UFH) be dosed by weight with a bolus dose of 60 U/kg to a maximum of 4000 U and an infusion dose of 12 U/kg/h to a maximum of 1000 U/h.