Evaluation Of Patients With Acute Myocardial Infarction Using Distal Occlusion Balloon Protection Device By Echocardiography

Study I Evaluation of Impact on Left Ventricle Remodeling and heart function in patients with acute myocardial infarction using distal occlusion balloon protection device by two-dimension echocardiographyObjective To evaluate the impact on left ventricle remodeling and left ventricle function in patients with acute myocardial infarction (AMI) using distal occlusion balloon protection devices by two-dimension echocardiography.Methods Twenty-two patients who had received percutaneous coronary intervention (PCI) with distal protection devices were examined by echocardiography before and after one three and six months operation, so were thirty patients who had received traditional PCI as control group. Ejection fraction (EF) , wall motion index (WMSI) , left ventricular end-diastolic volume (LVEDV), and left ventricular end-systolic volume (LVESV) were measured in each patients.Results There were no differences in each index between two groups preoperatively. Red, pale or mix thrombus were aspirated in all patients using distal protection devices. Compared with control group, EF was significantly higher in every echo exam post-operatively, WMSI and LVEDV were significantly lower after three and six months, and LVESV was lower after six month in distal protection devices group. The same result occurred in thrombolysis in myocardial infarction (TIMI) flow grade between two groups. Conclusion Myocardial perfusion and systolic function were improved using distal protection devices. Left ventricle remodeling was prevented effectively by using distal protection devices. The shape, structure and function of left ventricle could be monitoring and evaluation by echocardiography.Study II Evaluation of heart function in patients with acute myocardial infarction using distal occlusion balloon protection device by Doppler tissue imagingObjective To evaluate left ventricle function in patients with acute myocardial infarction (AMI) using distal occlusion balloon protection devices by Doppler tissue imaging.Methods The patients who had received percutaneous coronary intervention (PCI) with distal protection devices including nine anterior wall infarction ones and thirteen inferior wall infarction ones were examined by echocardiography before and after one, three and six months operation, so were patients including fourteen anterior wall infarction ones and twenty-oneinferior wall infarction ones who had received traditional PCI as control group. The moving velocities of left ventricular wall except apex in long axis direction were measured and analyzed by DTI technology in every patient. Ejection fraction (EF) and mitral orifice blood flow rate were measured, too. Results There were no differences in each index between two groups preoperatively. Compared with control group, the moving velocities of infarction wall in each segment except apex by DTI was significantly higher in every echo exam post-operatively, and raised gradually by self contrast. The diastolic functions measured by DTI were also improved.Conclusion Systolic and diastolic function were improved using distal protection devices by DTI technology. The moving velocities of each segment in long axis measured by DTI can evaluate integrity and regional left ventricular function quantitatively. It was more sensitive and specific than traditional echo.Study m Primary Evaluation of myocardial perfusion in patients with acute myocardial infarction using distal occlusion balloon protection device by real-time contrast echocardiographyObjective To primarily evaluate the myocardial perfusion in patients with acute myocardial infarction (AMI) using distal occlusion balloon protection devices by real-time contrast echocardiography.Methods Two patients who had received percutaneous coronary intervention (PCI) with distal protection devices before ten months were examined by real-time contrast echocardiography. Each patient received...