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- W2408852102 abstract "The no-reperfusion phenomenon occurs in a considerable number of patients despite restoration of the infarct-related artery (IRA) patency. Factors responsible for this phenomenon include myocardial structural changes, whereas haemorheological parameters that significantly contribute to microvascular resistance, have not been studied so far.To determine the possible relationship between blood and plasma viscosity, red blood cell aggregation and their deformability, and myocardial reperfusion following effective mechanical intervention of IRA.The analysis included 23 patients with myocardial infarction treated with primary coronary angioplasty with resultant TIMI (Thrombolysis in Myocardial Infarction) grade 3 flow. Myocardial reperfusion was found effective if myocardial perfusion grade (MPG) was 3. Blood and plasma viscosity were assessed using a Brookfield rotation viscometer. Red blood cell aggregation and deformability were measured with a Laser Optical Rotational Cell Analyzer (LORCA). Patients were divided into two groups with respect to obtained MPG: reperfusion group (14 subjects) and no-reperfusion group (9 patients).Corrected whole blood viscosity and plasma viscosity were significantly higher in the no-reperfusion group and exceeded the values obtained in the reperfused patients by 14% (p <0.05) and 10.5% (p <0.01), respectively. Red blood cell deformability index at shear stress ranging from 1.75 Pa to 60.03 Pa was significantly lower in the no-reperfusion group. Red blood cell aggregation index was significantly higher (by 14.3%, p <0.05), whereas aggregation halftime was significantly shorter (by 58%, p <0.05) in the no-reperfusion group.Our results indicate that haemorheological disturbances may be an important factor contributing to no-reperfusion after effective mechanical opening of IRA." @default.
- W2408852102 created "2016-06-24" @default.
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- W2408852102 date "2007-07-01" @default.
- W2408852102 modified "2023-09-23" @default.
- W2408852102 title "Haemorheological factors and myocardial reperfusion in patients with ST-elevation myocardial infarction undergoing primary coronary intervention." @default.
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