Thrombolytic Therapy for Stroke

What Is Thrombolytic Therapy?

Thrombolytic therapy, also known as clot-busting treatment, is a life-saving emergency intervention used to dissolve blood clots that are blocking blood flow to the brain during an ischemic stroke. There are two main types of thrombolytic medications: tenecteplase (commonly called TNKase) and alteplase (commonly referred to as tPA - tissue plasminogen activator).

By breaking up the clot quickly, thrombolytic therapy helps restore blood flow, minimize brain damage, and improve the chances of recovery.

Why Is It Done?

Thrombolytic therapy is done to:

• Treat ischemic stroke, which is caused by a blood clot blocking an artery in the brain
• Preserve brain function by restoring blood flow as soon as possible
• Reduce disability and improve recovery outcomes

It must be administered within a specific time window, typically within 3 to 4.5 hours after the last known time the patient had no stroke symptoms (known as “last known well”). The sooner it’s given, the better the results.

Before the Therapy

• Emergency medical teams will assess your symptoms and perform urgent brain imaging (usually a CT scan) to confirm the stroke type.
• Thrombolytic therapy is only used for ischemic strokes, not for hemorrhagic strokes (which involve bleeding in the brain).
• Your medical history will be reviewed to ensure you’re a candidate for thrombolytics, as some conditions may increase risk of bleeding.

During the Therapy

• You will receive the medication through an IV in your arm.
• The medication works by dissolving the clot and restoring blood flow.
• Depending on the medication, it may be given all at once or slowly over a period of time.
• You’ll be closely monitored throughout the process for any signs of complications.

After the Therapy

• You’ll be transferred to an intensive care unit (ICU) for monitoring.
• Doctors will check your neurological status, blood pressure, and bleeding risk.
• Depending on your response, additional treatments like mechanical thrombectomy may be considered.

Thrombolytic therapy is generally safe and well tolerated when given in time. However, like all medical treatments, it comes with risks:

• Bleeding in the brain (hemorrhage) – the most serious potential complication
• Allergic reactions (rare)
• Bleeding at IV or catheter sites

Despite these risks, the benefits often outweigh the potential complications, especially when used early in the course of a stroke. Your stroke care team will work with you to determine the best course of treatment for your individual situation.