STUDY DESIGN This is a single center prospective study mainly designed to compare different types of coronary revascularization therapies in patients with severe coronary artery disease combining heart failure. We will collect the data at baseline before the therapy, as well as 30 days, 6 months and 12 months after surgery. Using follow-up visits along with effective exams such as echocardiography, cardiopulmonary function mensuration and tests of serum markers, we will principally make a comparison of both primary and secondary outcomes, also quality of life among patients in these three groups.
STUDY POPULATION About 525 patients who are diagnosed with severe CAD and HF will be enrolled. Severe CAD is defined as at least 2 vessel disease with each ≥50% narrowing of the luminal diameter shown by coronary angiography, including LAD. Those enrolled also has reduced cardiac systolic function (LVEF≤50%).
STUDY DURATION It will take about 2 years to finish all follow-up visits with each patient at least 12 months after surgery.
STUDY PROCESS The statistical analysis will include all the materials of each patient in every follow-up visit. We will describe basic characteristics and test parameters of every visit, comparing those in PCI, CABG and HCR group, to further investigate the prognostic influence of each therapeutic method.
Data analysis will be processed by SPSS. All the analysis will be used by the 2-side test with 95% confidence interval, showing statistical significance if 2-side p value is less than 0.05. The study will finally report primary and secondary outcomes, as well as changes of several important parameters.
