Evaluation on myocardial perfusion of coronary heart disease percutaneous coronary intervention pre and post by the transvenous myocardial contrast echocardiography

Objective To evaluate myocardial perfusion of coronary heart disease percutaneous coronary intervention ( PCI ) pre and post. Methods 42 cases were selected by doctors in department of cardiology who are confirmed coronary artery normal subjects and have coronary artery stenosis subjects by the coronary angiography, transvenous myocardial contrast echocardiography were conducted pre and post PCI in patients with coronary artery stenosis and coronary artery normal, quantitative diagnosis of coronary microcir-culation perfusion through the extent of myocardial development and record images, will be comparative analysis pre and post treatment and coronary artery normal subjects, evaluate surgical efficacy, estimate prognosis of patients. Results After PCI treatment to 23 cases, the correlation-myocardial segments to the partial cross sectional area of all the capillaries( A ), blood flow velocity( β ), myocardial blood flow volume correlation-myocardial segments group compared to the coronary artery normal subjects of the correlationmyocardial segments group, the partial cross sectional area of all the capillaries( A ), blood flow velocity ( β ), myocatrlial blood flow volume( A·β )still all decreased, correlation analysis showed, follow-up period EF values and wall motion score index incwased significantly compared with those of preoperative and after treatment with PCI in A, β, A · β good correlation. Conclusion Transvenous myocardial contrast echocardiography examination for the diagnosis and treatment of coronary heart disease areas provide an accurate, noninvasive evaluation of myocardial microcirculation and clinical test; further evaluate the treatment of percutaneous coronary intervention in patients with myocardial infarction to improve myocardial perfusion effectively. Those patients without reperfusion therapy and angina pectofis or myocardial infarction should be treated with delayed PCI as early as possible, to save the ischemic myocardial infarction, and make the ventricular function improved. Key words: Transvenous myocardial contrast echocardiography;  Coronary heart disease;  Percutaneous coronary intervention