Measuring Activated Clotting Time during Cardiac Catheterization and PCI: The Effect of the Sampling Site

Figure 1

Screening, procedure and analysis. CAG = coronary angiography; PCI = percutaneous intervention; IU = International Units; UFH = unfractionated heparin; IVL = intravenous line; patients were eligible for inclusion when it was expected that the scheduled procedure would be accomplished with a single bolus of heparin. At the start of the procedures, an injection of UFH was administered over the arterial sheath. Patients who underwent CAG or PCI received, respectively, 5000 IU or 70–100 IU/kg of UFH. At the end of the procedure, blood samples from the arterial sheath, catheter, and IVL were collected and the ACT measurement was performed.