Impact of incomplete revascularization on long-term mortality after coronary stenting

Background The impact of incomplete revascularization （IR） on adverse outcomes after percutaneous coronary intervention remains inconclusive, and few studies have examined mortality during follow-ups longer than 5 years. The objective of this study is to test the hypothesis that IR is associated with higher risk of long-term （8-year） mortality after stenting for multivessel coronary disease.

Single-territory incomplete surgical revascularization improves regional wall motion of remote ventricular areas： results from a propensity-matched study

Objective Basic science studies demonstrated a general intramyocardial angiogenetic response potentially responsible for the creation of a microvascular neocapillaries network assisting myocardial function. We hypothesized that the benefit provided by the reperfusion of left anterior descending （LAD） territories and the biological angiogenetic drive triggered by the revascularization could translate in a global improvement in ventricular contractility, not restricted to the grafted area. Methods High-risk patients with multivessel coronary artery disease and preoperative wall motion abnormalities were retrospectively analyzed to compare outcomes and regional ventricular function of those who received optimal medical therapy （OMT） versus those who underwent off-pump coronary artery bypass grafting （OPCABG） and received an incomplete myocardial revascularization using left internal mammary artery （LIMA） on LAD （OPCABG group）. From January 2007 to December 2014, 206 patients （OMT, n = 136, OPCABG, n = 70） were propensity-score matched to have 70 matched pairs. Variables included in propensity score analyses were ejection fraction （EF）, left ventricular end diastolic volume （LVEDVi）, EuroSCORE II. Primary endpoint was the variation in the global wall motion score index （AWMSI） as evaluated by transthoracic echocardiography. Follow up was completed at 3 years from surgery or hospital discharge. Results Regional analysis of ventricular function revealed a regional WMSI improvement in the OPCABG group not only for LAD territories but also for non-LAD regions, associated with a reduction in the negative left ventricular ischemic remodeling, compared to patients discharged in optimal medical therapy. Global AWMSI was negative in OPCABG group （-3.4 ± 2.8%） and positive in the OMT group （5.9 ± 3.1%）, indicating a better wall motion score for OPCAB patients. Surprisingly, regional WMSI improved also in non-grafted territories in the off-pump CABG group with a delta value of -3.7 ± 5.3% for left circumflex artery （LCX） area and -3.5 ± 5.4% for right coronary artery （RCA） area. Conclusions In patients with multivessel coronary artery disease, LIMA-to-LAD grafting is associated with an improvement in the WMSI involving also the surrounding non-LAD ungrafted segments and with the attenuation of negative global and regional ischemic ventricular remodeling.

Complete revascularization reduces adverse outcomes in patients with multivessel coronary artery disease

AIM To investigate the infuence of complete and incomplete revascularization （ICR） in patients with multivessel coro-nary artery disease undergoing coronary artery bypass or percutaneous coronary intervention.METHODS We searched PubMed using the keywords “complete revascularization”, “incomplete revascularization”, “cor-onary artery bypass”, and “percutaneous coronary intervention”. We selected randomized controlled studies （RCT） and observational studies only for review. The main outcomes of interest were mortality, myocardial infarction （MI） and repeat revascularization. We identified further studies by hand searching relevant publications and included those that met with the inclusion criteria in our fnal analysis and performed a systematic review.RESULTSTen studies were identified, including 13327 patients of whom, 8053 received complete revascularization and 5274 received ICR. Relative to ICR, CR was associated with lower mortality （RR： 0.755, 95%CI： 0.66 to 0.864, P = 0.765, I2 = 0.0%）, lower rates of MI （RR： 0.759, 95%CI： 0.615 to 0.937, P = 0.091, I2 = 45.1%）, lower rates of MACCE （RR： 0.731, 95%CI： 0.668 to 0.8, P = 0.453, I2 = 0.0%） and reduced rates of repeat coronary revascularization （RR： 0.691, 95%CI： 0.541 to 0.883, P = 0.0, I2 = 88.3%）.CONCLUSIONCR is associated with lower rates of adverse outcomes. CR can be used as a standard in the choice of any particular revascularization strategy.