Aims The present study aimed to determine the frequency and the impact on clinical outcome of atrial fibrillation(AF) in patients with acute myocardial infarction(AMI) and left ventricular dysfunction. Methods and res...Aims The present study aimed to determine the frequency and the impact on clinical outcome of atrial fibrillation(AF) in patients with acute myocardial infarction(AMI) and left ventricular dysfunction. Methods and results In the OPTIMAAL trial, 5477 patients with AMI and signs of left ventricular dysfunction were included. At baseline, 655 patients(12% ) had AF, and 345(7.2% ) developed new- onset AF during follow- up(2.7± 0.9 years). Older patients, patients with history of angina and worse Killip class had and developed AF more frequently(P< 0.001). Patients with AF at baseline were at increased risk relative to those without AF for mortality[adjusted hazard ratio(HR) of 1.32, P=0.001] and for stroke(HR 1.77, P< 0.001). New- onset AF was associated with increased subsequent mortality for the first 30 days following randomization(HR 3.83, P< 0.001) and the entire trial period(HR 1.82, P< 0.001). Risk of stroke was increased for the first 30 days(HR 14.6, P< 0.001) and for the whole trial period(HR 2.29, P< 0.001). Conclusion AF is frequently observed in patients with AMI complicated by heart failure. Current AF, and the development of new AF soon after AMI, is associated with increased risk of death and stroke.展开更多
分析GE Optima CT660的3例故障,分别为机架旋转时出现噪声、球管曝光时提示报错信息“(40-0114)Rotor not at speed”和图像有严重的伪影。理论结合实践,采用逐步排除法、仔细观察法、故障分析法和维修手册查阅法,通过调整皮带驱动轮的...分析GE Optima CT660的3例故障,分别为机架旋转时出现噪声、球管曝光时提示报错信息“(40-0114)Rotor not at speed”和图像有严重的伪影。理论结合实践,采用逐步排除法、仔细观察法、故障分析法和维修手册查阅法,通过调整皮带驱动轮的轴向位置并拧紧顶丝、更换同型号球管后进行参数调试和动平衡校准、更换32号探测器模块等措施解决故障。该案例不仅为同行提供参考,对于提高维修效率,保障设备安全运行,提高临床工程师技术水平,降低医院维保费用等工作也有重要作用。展开更多
文摘Aims The present study aimed to determine the frequency and the impact on clinical outcome of atrial fibrillation(AF) in patients with acute myocardial infarction(AMI) and left ventricular dysfunction. Methods and results In the OPTIMAAL trial, 5477 patients with AMI and signs of left ventricular dysfunction were included. At baseline, 655 patients(12% ) had AF, and 345(7.2% ) developed new- onset AF during follow- up(2.7± 0.9 years). Older patients, patients with history of angina and worse Killip class had and developed AF more frequently(P< 0.001). Patients with AF at baseline were at increased risk relative to those without AF for mortality[adjusted hazard ratio(HR) of 1.32, P=0.001] and for stroke(HR 1.77, P< 0.001). New- onset AF was associated with increased subsequent mortality for the first 30 days following randomization(HR 3.83, P< 0.001) and the entire trial period(HR 1.82, P< 0.001). Risk of stroke was increased for the first 30 days(HR 14.6, P< 0.001) and for the whole trial period(HR 2.29, P< 0.001). Conclusion AF is frequently observed in patients with AMI complicated by heart failure. Current AF, and the development of new AF soon after AMI, is associated with increased risk of death and stroke.
文摘分析GE Optima CT660的3例故障,分别为机架旋转时出现噪声、球管曝光时提示报错信息“(40-0114)Rotor not at speed”和图像有严重的伪影。理论结合实践,采用逐步排除法、仔细观察法、故障分析法和维修手册查阅法,通过调整皮带驱动轮的轴向位置并拧紧顶丝、更换同型号球管后进行参数调试和动平衡校准、更换32号探测器模块等措施解决故障。该案例不仅为同行提供参考,对于提高维修效率,保障设备安全运行,提高临床工程师技术水平,降低医院维保费用等工作也有重要作用。
