Related Experiment Videos
[Revascularization in the acute phase of myocardial infarction. Study of left ventricular function in the 3d week and
J P Favier1, J M Mossard, S Roman
1Service de Cardiologie, Hôpital de Hautepierre, Strasbourg.
Insights
Early thrombolysis for myocardial infarction significantly improves heart function in anterior cases. Prompt treatment leads to better ejection fraction, highlighting the importance of rapid revascularization.
Area of Science:
- Cardiology
- Interventional Cardiology
- Emergency Medicine
Context:
- Primary myocardial infarction requires timely intervention to preserve cardiac function.
- Intravenous thrombolysis followed by angiography is a standard initial treatment.
- Assessing the impact of early treatment on left ventricular function is crucial.
Purpose:
- To evaluate the efficacy of early intravenous thrombolysis and subsequent revascularization in patients with primary myocardial infarction.
- To determine if early treatment improves left ventricular ejection fraction (EF) in anterior versus inferior infarctions.
- To assess the long-term functional outcomes at 21 days and 6 months post-treatment.
Summary:
- 27 patients with myocardial infarction received early intravenous thrombolysis.
- Immediate coronary angiography revealed patent arteries in 76% of cases.
- Intracoronary thrombolysis and angioplasty achieved an 88% patency rate.
- Early treatment (within 3 hours) for anterior infarctions significantly improved EF at 21 days and 6 months compared to later treatment.
- Inferior infarctions showed comparable EF regardless of treatment timing.
- One patient experienced a fatal cerebral vascular accident during thrombolysis.
Impact:
- Early revascularization strategies significantly improve myocardial salvage in anterior myocardial infarctions.
- Prompt intervention and complete revascularization are associated with better long-term cardiac function.
- The findings support aggressive early treatment protocols for specific myocardial infarction subtypes.
Abstract:
27 patients with primary myocardial infarction are treated, in the first 6 hours, with intravenous thrombolysis with immediate coronary angiographic control showing a patent artery in 76 p. cent of the cases. The treatment is completed with intracoronary thrombolysis (5 times) and transluminal angioplasty (6 times), enabling to obtain a patency rate of 88 p. cent. The overall left ventricular function is evaluated at D21 and in the 6th month (M6). Among anterior infarctions, those treated during the first three hours have a better ejection fraction (EF) at D21 than those treated later (40.3 p. cent +/- 6 versus 33.2 p. cent +/- -NS); this functional benefit is confirmed at M6 (42.8 p. cent +/- 12 versus 30.6 p. cent +/- 8; p less than 0.06). On the contrary, among inferior infarctions, the EF is comparable at D21 and M6 regardless of the early nature of the treatment. One patient died prematurely from a cerebral vascular accident which occurred during the thrombolysis. These results are in favor of a significant myocardial salvation in anterior infarctions revascularised at an early stage and of an active approach in order to obtain the most complete possible revascularisation.