What is the typical target range for activated clotting time during PCI with unfractionated heparin?

What is the typical target range for activated clotting time during PCI with unfractionated heparin?

• A. Approximately 50–100 seconds.
• B. Approximately 250–300 seconds.
• C. Approximately 150–200 seconds.
• D. Approximately 350–400 seconds.

Answer: (B)

During PCI, unfractionated heparin is used to prevent clot formation on catheters, balloons, and stents. Because you’re manipulating the coronary arteries in a high-risk setting, anticoagulation is guided by the activated clotting time, a quick bedside test that reflects whole-blood coagulation. The goal is to keep the ACT high enough to inhibit thrombin generation during the procedure, but not so high that bleeding becomes excessive. A typical target is about 250–300 seconds. This range provides protective anticoagulation while maintaining a reasonable bleeding risk profile. If the ACT is below target, you give more heparin and recheck. If it’s above target, you reduce or reverse heparin with protamine as appropriate. In some situations, such as with additional antiplatelet therapy or complex interventions, clinicians may aim a bit higher, but 250–300 seconds is the standard baseline target.

During PCI, unfractionated heparin is used to prevent clot formation on catheters, balloons, and stents. Because you’re manipulating the coronary arteries in a high-risk setting, anticoagulation is guided by the activated clotting time, a quick bedside test that reflects whole-blood coagulation. The goal is to keep the ACT high enough to inhibit thrombin generation during the procedure, but not so high that bleeding becomes excessive. A typical target is about 250–300 seconds. This range provides protective anticoagulation while maintaining a reasonable bleeding risk profile. If the ACT is below target, you give more heparin and recheck. If it’s above target, you reduce or reverse heparin with protamine as appropriate. In some situations, such as with additional antiplatelet therapy or complex interventions, clinicians may aim a bit higher, but 250–300 seconds is the standard baseline target.