Author + information
Recent studies have refuted the benefit of thrombectomy in ST-elevation myocardial infarction (STEMI). We aimed to evaluate the outcomes of STEMI patients undergoing thrombus aspiration in a real world setting.
We retrospectively analyzed STEMI patients who underwent percutaneous coronary intervention (PCI) with initial thrombolysis in myocardial infarction (TIMI) grade 0/1 flow. We compared patients who underwent thrombectomy (ASP) to those who underwent standard PCI (STD). Clinical end points included enzymatic infarct size, incidence of no-reflow, and early left ventricular recovery (LVR).
359 consecutive patients were included. 270 underwent ASP and 89 STD. Baseline characteristics are shown in the table. Patients who underwent ASP had a lower baseline left ventricular systolic function and were more likely to receive intra aortic balloon pump (IABP) support. In multivariate linear model, after adjusting for demographics, initial creatine kinase (CK), glomerular filtration rate (GFR) and infarct related artery (IRA) thrombectomy was associated with lower peak CK (2085 IU/L vs. 2843 IU/L, p<0.01). After adjusting for demographics, initial CK, GFR and IRA thrombectomy was neither associated with improved LVR nor with reduced no-reflow.
Thrombectomy in STEMI resulted in lower enzymatic infarct size. But, thrombectomy did not reduce no-reflow phenomenon or improve early left ventricular function recovery.
|Thrombectomy (N=270)||No thrombectomy (N=89)||P-value|
|Gender (Male)||80% (215)||83% (74)||NS|
|Body mass index||27.2||26.5|
|Hypertension||60% (163)||67% (60)|
|Smoker||51% (137)||49% (44)|
|Diabetes||28% (76)||30% (27)||NS|
|GFR<60mg/min/1.73m2||22% (59)||22% (20)|
|Prior CAD||20% (55)||21% (19)|
|Ischemic time (Minute)||471.5||509.4|
|Infarct related artery (LAD)||48% (130)||53% (47)||NS|
|No-reflow||17% (47)||18% (16)||NS|
|IABP||25% (68)||11% (10)||0.004|
Poster Sessions, Expo North
Saturday, March 09, 2013, 3:45 p.m.-4:30 p.m.
Session Title: ACS Therapy: Key Observational Data
Abstract Category: 3. Acute Coronary Syndromes: Therapy
Presentation Number: 1168-184
- 2013 American College of Cardiology Foundation