Safety and Efficacy of Low-dose hEparinization in Cerebral Angiography sTudy

As soon as the sheath was inserted, three different doses of heparin were administered according to the patients group assignment. In the conventional systemic heparinization (Regular-dose) group (The drug is Heparin Sodium Injection 2ml:12500 Units per bottle), systemic heparin was administered by intravenous injection at a dose of 83 Units/Kg. Patients in both the regular dose (83 units/kg) and low dose (42 units/kg) groups were given heparin intravenously once before the procedure of cerebral angiography, and no further heparin infusion was given during the angiography procedure. If the duration of the imaging procedure exceeded 1 hour, an additional 1/2 amount of the first dose of heparin was given.

In the micro-dose systemic heparinization (Micro-dose) group (the drug is Heparin Sodium Injection 2ml:12500 Units per bottle), systemic heparin was administered by intravenous injection at a dose of 42 Units/Kg. Patients in both the regular dose (83 units/kg) and low dose (42 units/kg) groups were given heparin intravenously once before the procedure of cerebral angiography, and no further heparin infusion was given during the angiography procedure. If the duration of the imaging procedure exceeded 1 hour, an additional 1/2 amount of the first dose of heparin was given.

No additional heparin was administered via the sheath or arterial route in the no heparinization group.