Rapid restoration of thrombolysis in myocardial infarction III case no-reflow during percutaneous coronary intervention is imperative. Application punctured balloon intracoronary injection sodium nitroprusside a prompt, safe and effective method. To investigate the effectiveness via treatment artery main objective study. We retrospectively analyzed 76 patients treated with for no-reflow. All su...

Because total coronary artery occlusion was found in the early hours of transmural myocardial infarction, most of our research interest and treatment strategies focus on epicardial coronary arteries.1 Little attention, however, is paid to the coronary microvasculature. When a coronary artery is occluded, detrimental changes occur in the cardiac capillaries and arterioles. After relief of the oc...

Sn-Bi-X solders are widely used in electronic packaging industry. However, thermomigration (TM) behaviors of solder joints and the orientations change Bi grains under temperature gradient rarely reported. In this study, Sn-Bi57-Ag0.7/Cu were to conduct a TM test 625 °C/cm for 400 h, an isothermal aging at 85 °C was also conducted comparison. The microstructural evolution after reflow, analyzed ...

The recent push for lead free products is resulting in significant changes in packaging materials. Manufacturers of electronic equipment are requiring materials that consistently withstand peak reflow temperatures of 240?C to 260°C. Reflow soldering at these ext reme temperatures, especially after extended moisture exposure, introduces several challenges that must be solved to produce reliable ...

Primary percutaneous coronary intervention (PCI) is the standard treatment strategy for patients with ST-elevation myocardial infarction (STEMI). However, despite the early restoration of epicardial artery flow, microvascular obstruction and reduced myocardial perfusion may occur. The " no-reflow " phenomenon is associated with a large infarct size and poor outcomes. The pathogenesis of no-refl...

BACKGROUND Primary percutaneous coronary intervention (PPCI) is the preferred treatment method for ST elevation myocardial infarction (STEMI). However, the required equipments are not available in all hospitals. Thus, due to shortage of time, some patients receive thrombolysis therapy first. Patients with chest pain and/or persistent ST segment elevation will then undergo rescue percutaneous co...

BACKGROUND No-reflow is associated with an adverse outcome and higher mortality in patients with ST-segment elevation acute myocardial infarction (STEMI) who undergo percutaneous coronary intervention (PCI) and is considered a dynamic process characterized by multiple pathogenetic components. The aim of this study was to investigate the effectiveness of a combination therapy for the prevention ...

The push for lead-free or RoHS-compliant products is resulting in significant changes in packaging materials. Manufacturers of electronic equipment require materials that consistently withstand peak reflow temperatures of 240°C to 260°C. Reflow soldering at these extreme temperatures, especially after extended moisture exposure, introduces several challenges that must be solved to produce relia...

The fluxless solderability of pure indium on gold-coated surfaces is investigated in this study using measurements of wetting angle and joint strength. This study focuses on the effects of indium s native oxides and those which form during heat treatment. The initial oxide thicknesses are obtained by heating indium samples at various temperatures, and then, during the reflow above the melting t...