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Updated: Aug 11, 2026

Prehospital Thrombolysis: A Manual from Berlin
Published on: November 26, 2013
Thrombolytic therapy for acute myocardial infarction: a brief review
1Department of Medicine, University of Washington School of Medicine, Seattle.
Insights
Early thrombolytic therapy for acute myocardial infarction (MI) reduces mortality and preserves heart function. Ongoing research explores new agents like tissue-type plasminogen activator (t-PA) and prehospital interventions to further improve outcomes.
Area of Science:
- Cardiology
- Emergency Medicine
- Pharmacology
Background:
- Acute myocardial infarction (MI) poses significant mortality risks.
- Timely intervention is crucial for preserving myocardial function and reducing mortality.
Purpose of the Study:
- To evaluate the efficacy of early thrombolytic therapy in reducing mortality and improving left ventricular function in acute MI patients.
- To assess the potential benefits of newer thrombolytic agents and adjunctive therapies.
- To explore the feasibility and impact of prehospital thrombolytic therapy.
Main Methods:
- Review of existing data on thrombolytic therapy within 4-6 hours of evolving acute MI.
- Evaluation of tissue-type plasminogen activator (t-PA) in multicenter trials.
- Comparison of early versus delayed coronary artery angioplasty.
- Assessment of adjunctive beta-blocker therapy.
- Planning for studies on prehospital thrombolytic therapy.
Main Results:
- Thrombolytic therapy within the first 4-6 hours appears to reduce in-hospital and 1-year mortality rates.
- Early treatment may improve residual left ventricular function by preserving ischemic myocardium.
- Newer agents like t-PA show promise for more effective thrombolysis.
Conclusions:
- Early thrombolytic therapy is beneficial for acute MI patients.
- Further research into advanced thrombolytic agents and prehospital administration holds potential for substantial mortality reduction.
Abstract:
Thrombolytic therapy given within the first 4 to 6 hours to patients with evolving acute MI appears to reduce in-hospital and 1-year mortality rates. In addition, patients who receive treatment in the first few hours may also benefit through improved residual left ventricular function, resulting from the preservation of ischemic myocardium. Newer agents that are more effective in lysing intracoronary thrombi are currently under development. The most promising is tissue-type plasminogen activator (t-PA), which is being evaluated in a number of large multicenter trials, including the National Heart, Lung, and Blood Institute's Thrombolysis in Myocardial Infarction (TIMI) trial. In this study researchers are also comparing the additional value of early versus delayed coronary artery angioplasty and are evaluating a subset of patients randomly assigned to early beta-blocker therapy to assess the value of adjunctive pharmacologic therapy. In the future, it is likely that studies will be carried out to determine the usefulness of thrombolytic therapy given to patients by paramedics before hospitalization. Such a study is being planned in several communities. It is hoped that by means of prehospital therapy, it may be possible to treat a substantial group of patients with symptoms and electrocardiographic findings of acute MI before extensive left ventricular myocardial necrosis has occurred. If this goal can be realized, it may be possible to achieve a very substantial reduction in mortality resulting from acute MI. Initial experience with prehospital intravenous streptokinase therapy has already been reported from Jerusalem, Israel.(ABSTRACT TRUNCATED AT 250 WORDS)
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