An update on thrombolytic therapy for acute stroke

Peter D Schellinger1, Markku Kaste, Werner Hacke

  • 1Department of Neurology, University Hospital, Heidelberg, Germany. peter_schellinger@med.uni-heidelberg.de

Insights

Thrombolysis is an effective treatment for acute ischemic stroke, improving outcomes when guided by advanced imaging beyond traditional time windows. This approach personalizes stroke care, aiming to reduce disability and the socioeconomic burden of stroke.

Area of Science:

  • Neurology
  • Cardiovascular Medicine
  • Medical Imaging

Background:

  • Stroke is a leading cause of death and disability globally.
  • Thrombolysis is the primary treatment for acute ischemic stroke within 3 hours.
  • Current treatment often relies on rigid time windows, potentially excluding eligible patients.

Purpose of the Study:

  • To provide an overview of thrombolytic therapy in acute stroke.
  • To present a diagnostic approach for individualized stroke management.
  • To develop a treatment algorithm based on pathophysiological reasoning and advanced imaging.

Main Methods:

  • Review of current thrombolytic therapy status in stroke.
  • Development of a treatment algorithm using multiparametric stroke magnetic resonance imaging (MRI).
  • Integration of pathophysiological information for patient selection.

Main Results:

  • Thrombolysis is effective intravenously (3h) and intra-arterially (3-6h).
  • Evidence supports extended thrombolysis beyond 3 hours with advanced MRI selection criteria.
  • Thrombolytic therapy remains underutilized despite proven efficacy.

Conclusions:

  • Personalized stroke management using advanced MRI can optimize thrombolysis.
  • Expanding treatment eligibility criteria may increase thrombolysis use.
  • Increased adoption of effective thrombolysis can reduce the socioeconomic impact of stroke.
Abstract

Related Concept Videos

Clot Retraction and Fibrinolysis01:16

Clot Retraction and Fibrinolysis

After a fibrin clot is formed, the next step is clot retraction, a vital process facilitated by platelet contractile proteins, such as actin and myosin. These proteins pull the fibrin strands closer together and condense the clot. This action reduces the size of the clot, creating a smaller, denser structure that effectively seals off the damaged vessel. Clot retraction consolidates the clot and helps with wound healing by bringing the edges of the damaged blood vessel closer together.
Acute Coronary Syndrome I: Introduction01:30

Acute Coronary Syndrome I: Introduction

Acute Coronary Syndrome (ACS) encompasses a spectrum of heart conditions caused by sudden obstruction of coronary arteries, typically resulting from the rupture of an atherosclerotic plaque and subsequent thrombus (blood clot) formation. This obstruction can lead to partial or complete blockage of blood flow, causing varying degrees of myocardial ischemia or infarction.ACS includes the following clinical entities:Unstable Angina (UA)Non-ST-Elevation Myocardial Infarction (NSTEMI)ST-Elevation...
Venous Thrombosis III: Interprofessional Care01:29

Venous Thrombosis III: Interprofessional Care

Venous thrombosis requires effective prevention and treatment strategies to improve patient outcomes and reduce potential complications.Prevention StrategiesHealthcare providers must prioritize preventing venous thromboembolism (VTE) for all adult patients upon admission. Interventions depend on bleeding and thrombosis risk, medical history, current medications, diagnoses, planned procedures, and patient preferences. Patients on bed rest should change positions every two hours and, if not...
Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care01:29

Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care

Diagnosing Pulmonary EmbolismDiagnosing pulmonary embolism (PE) involves clinical assessment and advanced imaging tests. The preferred diagnostic tool is the spiral (helical) CT scan or CT angiography (CTA), which uses intravenous contrast media to visualize the pulmonary vasculature and identify emboli.A ventilation-perfusion (V/Q) scan is an alternative for patients unable to receive contrast media. This scan includes both perfusion and ventilation scanning. Perfusion scanning involves...
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...