Final answer:
Thrombolytic agents such as tissue plasminogen activator and streptokinase are injected to dissolve clots and are particularly critical in treating thrombotic strokes within 3 hours to improve patient outcomes.
Step-by-step explanation:
Thrombolytic agents, such as tissue plasminogen activator (tPA) or streptokinase (TPS), are used to dissolve clots that have already formed in the body. TPA is an enzyme that facilitates the conversion of plasminogen to plasmin, which plays a central role in breaking down clots. Streptokinase, another thrombolytic agent, is effective in the management of conditions like myocardial infarction (heart attack), where clots obstruct blood vessels. The administration of thrombolytic agents is especially crucial after a thrombotic stroke, as it can significantly improve a patient's prognosis if given within 3 hours of the event. It is important to determine the type of stroke before administering thrombolytics, as they are contraindicated in hemorrhagic strokes. Emerging research on thrombolytic compounds derived from snake venom may enhance future therapeutic options.