Ultrasonic Cardiogram to Evaluate the Long-term Outcome and Prognosis of Coronary Artery Chronic Total Occlusions for Percutaneous Revascularization Versus Optimal Medical Treatment

UCEPPCIOCT maintains a prospective clinical registry of all individual who undergo cardiac angiography,PCI or optimistic medicine treatment.

1. research objective to observe the changes of cardiac function postoperative PCI in patients with CTO and the incidence of major adverse cardiovascular events, and provide the reality basis for PCI strategy in clinical patients with CTO . 2. research content: follow up the patients with CTO by using echocardiography in preoperative and postoperative PCI in 1m, 3ms, 6ms, 12ms to assess the changes of cardiac structure and cardiac function. 2, comparison the 'incidence of major adverse cardiovascular events undergo PCI treatment in success and failure group in patients with CTO (such as severe angina attack, severe acute coronary syndrome, severe heart failure should be rehospitalized , fatal arrhythmia and sudden cardiac death, etc.)