Interplay between inflammation and microvascular obstruction in ST-elevation myocardial infarction: The importance of velocity

2021 ◽  
Author(s):  
Rocco A. Montone ◽  
Giulia La Vecchia
Keyword(s):  
Myocardial Infarction ◽  
Microvascular Obstruction ◽  
St Elevation Myocardial Infarction ◽  
St Elevation

Risk factors of coronary microvascular obstruction (Preprint)

2020 ◽  
Author(s):  
Yong Li ◽  
Shuzheng Lyu
Keyword(s):  
Risk Factors ◽  
Myocardial Infarction ◽  
Percutaneous Coronary Intervention ◽  
Logistic Regression ◽  
Microvascular Obstruction ◽  
Coronary Intervention ◽  
St Elevation Myocardial Infarction ◽  
Neutrophil Percentage ◽  
Percutaneous Coronary ◽  
St Elevation

BACKGROUND Coronary microvascular obstruction /no-reflow(CMVO/NR) is a predictor of long-term mortality in survivors of ST elevation myocardial infarction (STEMI) underwent primary percutaneous coronary intervention (PPCI). OBJECTIVE To identify risk factors of CMVO/NR. METHODS Totally 2384 STEMI patients treated with PPCI were divided into two groups according to thrombolysis in myocardial infarction(TIMI) flow grade:CMVO/NR group(246cases,TIMI 0-2 grade) and control group(2138 cases,TIMI 3 grade). We used univariable and multivariable logistic regression to identify risk factors of CMVO/NR. RESULTS A frequency of CMVO/NR was 10.3%(246/2384). Logistic regression analysis showed that the differences between the two groups in age(unadjusted odds ratios [OR] 1.032; 95% CI, 1.02 to 1.045; adjusted OR 1.032; 95% CI, 1.02 to 1.046 ; P <0.001), periprocedural bradycardia (unadjusted OR 2.357 ; 95% CI, 1.752 to 3.171; adjusted OR1.818; 95% CI, 1.338 to 2.471 ; P <0.001),using thrombus aspirationdevices during operation (unadjusted OR 2.489 ; 95% CI, 1.815 to 3.414; adjusted OR1.835; 95% CI, 1.291 to 2.606 ; P =0.001),neutrophil percentage (unadjusted OR 1.028 ; 95% CI, 1.014 to 1.042; adjusted OR1.022; 95% CI, 1.008 to 1.036 ; P =0.002) , and completely block of culprit vessel (unadjusted OR 2.626; 95% CI, 1.85 to 3.728; adjusted-OR 1.656;95% CI, 1.119 to 2.45; P =0.012) were statistically significant ( P <0. 05). The area under the receiver operating characteristic curve was 0.6896 . CONCLUSIONS Age , periprocedural bradycardia, using thrombus aspirationdevices during operation, neutrophil percentage ,and completely block of culprit vessel may be independent risk factors for predicting CMVO/NR. We registered this study with WHO International Clinical Trials Registry Platform (ICTRP) (registration number: ChiCTR1900023213; registered date: 16 May 2019).http://www.chictr.org.cn/edit.aspx?pid=39057&htm=4. Key Words: Coronary disease ST elevation myocardial infarction No-reflow phenomenon Percutaneous coronary intervention

Abstract 3008: Intracoronary Compared with Intravenous Bolus Abciximab Application in Patients with ST-Elevation Myocardial Infarction Undergoing Primary Coronary Intervention The randomized Leipzig Immediate PercutaneouS Coronary Intervention Abciximab i.v. versus i.c. in ST-Elevation Myocardial Infarction Trial (LIPSIAbciximab-STEMI)

Circulation ◽  
2007 ◽  
Vol 116 (suppl_16) ◽  
Author(s):  
Holger Thiele ◽  
Kathrin Schindler ◽  
Josef Friedenberger ◽  
Ingo Eitel ◽  
Georg Fürnau ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Infarct Size ◽  
Microvascular Obstruction ◽  
Coronary Intervention ◽  
St Elevation Myocardial Infarction ◽  
Bolus Administration ◽  
Cardiac Events ◽  
Adverse Cardiac Events ◽  
Percutaneous Coronary ◽  
St Elevation

Background Abciximab reduces major adverse cardiac events in patients with ST-elevation myocardial infarction undergoing primary percutaneous coronary intervention (PCI). Intracoronary bolus application of abciximab results in high local drug concentrations and may be more effective than standard intravenous bolus application for reduction of infarct size, no-reflow and improvement in perfusion. Methods Patients undergoing primary PCI were randomized to either intracoronary (n=77) or intravenous (n=77) bolus administration of abciximab with subsequent 12 hour intravenous infusion. Primary endpoint was infarct size and extent of microvascular obstruction assessed by delayed enhancement magnetic resonance. Secondary endpoints were ST-resolution at 90 minutes, Thrombolysis in Myocardial Infarction (TIMI)-flow and perfusion grade post PCI, and the occurrence of major adverse cardiac events within 30 days. Results The primary endpoint infarct size could be reduced by absolute 7% (17.7% i.c. versus 24.7% i.v., p=0.005). Similarly, the extent of microvascular obstruction was significantly smaller in i.c. patients in comparison to i.v. patients (p=0.02). Myocardial perfusion measured as early ST-segment resolution was significantly improved in i.c. patients with an absolute ST-resolution of 76±23% versus 64±31% (p=0.009). The TIMI flow after PCI was not different between treatment groups (p=0.51), but there was a trend towards an improved perfusion grade (p=0.12). There was a trend towards a higher major adverse cardiac event rate after intravenous versus intracoronary abciximab application (15.6% versus 5.2%, p=0.06; relative risk 3.00; 95% confidence intervals 0.94 –10.80). Conclusions: Intracoronary bolus administration of abciximab is superior to standard intravenous treatment with respect to infarct size, extent of microvascular obstruction, and perfusion in primary PCI. An adequately powered trial for major adverse cardiac event reduction is warranted.

Sign in / Sign up

Export Citation Format

Share Document