Primary angioplasty vs. early routine post-fibrinolysis angioplasty for acute myocardial infarction with ST-segment...

Area of Science:

• Cardiology
• Interventional Cardiology
• Acute Myocardial Infarction Management

Background:

• Primary angioplasty for ST-segment elevation myocardial infarction (STEMI) is often delayed or unavailable.
• Alternative reperfusion strategies are needed for STEMI patients facing geographic or logistical barriers.

Purpose of the Study:

• To evaluate lytic-based early routine angioplasty as a reperfusion option for STEMI patients.
• To compare the efficacy and safety of early routine post-fibrinolysis angioplasty versus primary angioplasty.

Main Methods:

• A non-inferiority, randomized controlled study involving 212 STEMI patients.
• Patients were randomized to either early routine post-fibrinolysis angioplasty (tenecteplase followed by stenting within 3-12h) or primary angioplasty (stenting with abciximab within 3h).
• Primary endpoints included epicardial/myocardial reperfusion and infarct size; secondary endpoints included bleeding and clinical outcomes at 6 months.

Main Results:

• Early routine post-fibrinolysis angioplasty demonstrated a significantly higher frequency of complete reperfusion (21% vs. 6%, P=0.003).
• Both groups showed similar infarct size, 6-week left ventricular function, major bleeding rates, and 6-month composite clinical endpoints.
• No significant difference was observed in infarct size (4613 vs. 4649 microg/L/h, P=0.94) or ejection fraction (59.0% vs. 56.2%, P=0.11).

Conclusions:

• Early routine post-fibrinolysis angioplasty safely achieves better myocardial perfusion compared to primary angioplasty.
• This strategy is equivalent to primary angioplasty in limiting infarct size and preserving left ventricular function, offering a viable alternative when primary angioplasty is not feasible.