What is the purpose of administering a heparin bolus during a stroke procedure?

The administration of a heparin bolus during a stroke procedure primarily serves the purpose of preventing clot formation. In the context of acute ischemic stroke interventions, such as thrombectomy or intra-arterial thrombolysis, the use of heparin is crucial to maintain blood flow and minimize the risk of thrombus development during the procedure. Heparin acts as an anticoagulant, inhibiting various factors in the coagulation cascade, which helps inhibit the propagation of existing clots and prevents new clots from forming as the interventionalists manipulate instruments within the vascular system.

By preventing clot formation, heparin allows for more effective stroke management and enhances the chances of restoring proper cerebral blood flow. The anticoagulation effect is particularly important during interventions that require manipulation of catheters and devices, which can inadvertently disrupt the delicate balance of coagulation and lead to further occlusion if not properly managed. Thus, heparin plays a vital role in optimizing patient outcomes during acute stroke interventions.