Residual SYNTAX score following coronary artery bypass grafting

Reasonable Incomplete Myocardial Revascularization in Patients with Chronic Heart Failure and Reduced Left Ventricular Ejection Fraction

The aim. To evaluate the results of incomplete myocardial revascularization with percutaneous coronary intervention (PCI) in patients with ischemic cardiomyopathy and heart failure with reduced left ventricular ejection fraction based on the residual SYNTAX Score (rSS) scale. Materials and methods. This prospective observational one-center study was conducted at the Ukrainian Children’s Cardiac Center, Clinic for Adults and included 192 patients whounderwent coronary angiography and myocardial re-vascularization using PCI. Baseline demographic and clinical parameters, including gender, age, presence of comorbid pathology were obtained from the medical history of each patient retrospectively. The results of revascularization were evaluated over a period of 2 years (from March 2020 to March 2022). To assess the completeness of revascularization, the rSS scale was used, and coronary angiography was repeated. Results and discussion. The most significant adverse events during 24 months of follow-up, associated with the severity of coronary artery damage according to the SYNTAX scale ≥23 points, were: death from any cause with odds ratio (OR) 6.9 (95% CI, p = 0.05); myocardial infarction (MI) with OR 5.5 (95% CI, p = 0.001); the combined endpoint was OR 2.4 (95% CI, p = 0.005). Over a 2-year follow-up period,results of myocardial revascularization according to the rSS scale were evaluated the effect of coronary artery stenting with minimal residual atherosclerotic narrowing (rSS ≤8) and significant arterial lesions (rSS ≥9) on indicators such as all-cause mortality, myocardial revascularization, re-hospitalization, recurrent acute MI and stroke were analyzed. Data analysis showed statistically significant difference in all indicators in favor of the group with a score of rSS ≤8 (р <0.05). Conclusions. The rSS scale in patients with coronary artery disease and heart failure with reduced left ventricular ejection fraction after PCI is a statistically significant criterion for the impact on the combined endpoint. In addition, an rSS score ≥9 was associated with a significantly higher riskof all-cause mortality, recurrent acute MI, and recurrent revascularization. A stratified rSS score ≥9 in ischemic cardiomyopathy with left ventricular ejection fraction ≤40% was more often observed in patients with existing comorbid pathology, such as hypertension, diabetes mellitus, stroke, peripheral artery disease.

Coronary atherosclerotic burden assessed by SYNTAX scores and outcomes in surgical, percutaneous or medical strategies: a retrospective cohort study

INTRODUCTION

Coronary atherosclerotic burden and SYNTAX Score (SS) are predictors of cardiovascular events.

OBJECTIVES

To investigate the value of SYNTAX scores (SS, SYNTAX Score II (SSII) and residual SYNTAX Score (rSS)) for predicting cardiovascular events in patients with coronary artery disease (CAD).

DESIGN

Retrospective cohort study.

SETTING

Single tertiary centre.

PARTICIPANTS

Medicine, Angioplasty or Surgery Study database patients with stable multivessel CAD and preserved ejection fraction.

INTERVENTIONS

Patients with CAD undergoing coronary artery bypass graft (CABG), percutaneous coronary intervention (PCI) or medical treatment (MT) alone from January 2002 to December 2015.

PRIMARY AND SECONDARY OUTCOMES

Primary: 5-year all-cause mortality. Secondary: composite of all-cause death, myocardial infarction, stroke and subsequent coronary revascularisation at 5 years.

RESULTS

A total of 1719 patients underwent PCI (n=573), CABG (n=572) or MT (n=574) alone. The SS was not considered an independent predictor of 5-year mortality in the PCI (low, intermediate and high SS at 6.5%, 6.8% and 4.3%, respectively, p=0.745), CABG (low, intermediate and high SS at 5.7%, 8.0% and 12.1%, respectively, p=0.194) and MT (low, intermediate and high SS at 6.8%, 6.9% and 6.5%, respectively, p=0.993) cohorts. The SSII (low, intermediate and high SSII at 3.6% vs 7.9% vs 10.5%, respectively, p<0.001) was associated with a higher mortality risk in the overall population. Within each treatment strategy, SSII was associated with a significant 5-year mortality rate, especially in CABG patients with higher SSII (low, intermediate and high SSII at 1.8%, 9.7% and 10.0%, respectively, p=0.004) and in MT patients with high SSII (low, intermediate and high SSII at 5.0%, 4.7% and 10.8%, respectively, p=0.031). SSII demonstrated a better predictive accuracy for mortality compared with SS and rSS (c-index=0.62).

CONCLUSIONS

Coronary atherosclerotic burden alone was not associated with significantly increased risk of all-cause mortality. The SSII better discriminates the risk of death.

TRIAL REGISTRATION NUMBER

ISRCTN66068876.

Prognostic value of characteristics of plaque combined with residual syntax score among patients with STEMI undergoing primary PCI: an intravascular optical coherence tomography study

Aim

The present study aimed to explore these characteristics, particularly thin-cap fibroatheroma (TCFA), in relation to residual syntax score (rSS) in patients who presented with acute MI.

Methods and outcomes

A total of 434 consecutive patients with MI aged ≥18 years who had STEMI underwent primary PCI. Notably, compared with other subgroups, the presence of TCFA in culprit lesions and a higher level of rSS, were significantly associated with MACE. When rSS was divided into three groups, high rSS levels were associated with a higher incidence of MACE, in the subgroups of without TCFA (P = 0.005), plaque erosion (P = 0.045), macrophage infiltration (P = 0.026), and calcification (P = 0.002). AUC of ROC curve was 0.794 and 0.816, whereas the AUC of the survival ROC was 0.798 and 0.846.

Conclusion

The results of this study could be used in clinical practice to support risk stratification.

Trial registration

This study was registered at ClinicalTrials.gov as NCT03593928.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12959-021-00329-z.

Safety and feasibility evaluation of planning and execution of surgical revascularisation solely based on coronary CTA and FFRCT in patients with complex coronary artery disease: study protocol of the FASTTRACK CABG study

INTRODUCTION

The previously published SYNTAX III REVOLUTION trial demonstrated that clinical decision-making between coronary artery bypass graft (CABG) and percutaneous coronary intervention based on coronary CT angiography (CCTA) had a very high agreement with the treatment decision derived from invasive coronary angiography (ICA). The study objective of the FASTTRACK CABG is to assess the feasibility of CCTA and fractional flow reserve derived from CTA (FFRCT) to replace ICA as a surgical guidance method for planning and execution of CABG in patients with three-vessel disease with or without left main disease.

METHODS AND ANALYSIS

The FASTTRACK CABG is an investigator-initiated single-arm, multicentre, prospective, proof-of-concept and first-in-man study with feasibility and safety analysis. Surgical revascularisation strategy and treatment planning will be solely based on CCTA and FFRCT without knowledge of the anatomy defined by ICA. Clinical follow-up visit including CCTA will be performed 30 days after CABG in order to assess graft patency and adequacy of the revascularisation with respect to the surgical planning based on non-invasive imaging (CCTA) with functional assessment (FFRCT) and compared with ICA. Primary feasibility endpoint is CABG planning and execution solely based on CCTA and FFRCT in 114 patients. Primary safety endpoint based on 30 day CCTA is graft assessment and topographical adequacy of the revascularisation procedure. Automatic non-invasive assessment of functional coronary anatomy complexity is also evaluated with FFRCT for functional Synergy Between percutaneous coronary intervention With Taxus and Cardiac Surgery Score assessment on CCTA. CCTA with FFRCT might provide better anatomical and functional analysis of the coronary circulation leading to appropriate anatomical and functional revascularisation, and thereby contributing to a better outcome.

ETHICS AND DISSEMINATION

Each patient has to provide written informed consent as approved by the ethical committee of the respective clinical site. Results will be submitted for publication in peer-reviewed journals and will be disseminated at scientific conferences.

TRIAL REGISTRATION NUMBER

NCT04142021.

Prognostic impact of residual SYNTAX score in patients with obstructive sleep apnea and acute coronary syndrome: a prospective cohort study

Background

There is a paucity of data from large prospective study evaluating the prognostic significance of the residual Synergy between percutaneous intervention with Taxus drug-eluting stents and cardiac surgery (SYNTAX) Score (rSS) in patients with obstructive sleep apnea (OSA) and Acute Coronary Syndrome (ACS).

Methods

ACS patients who undergoing percutaneous coronary angiography and completing a sleep study during hospitalization were prospectively enrolled. The baseline SYNTAX Score (bSS) and the rSS after revascularization were assessed. Complete revascularization (CR, rSS = 0) and incomplete revascularization (ICR, rSS > 0) were categorized. OSA (apnea hypopnea index, AHI ≥ 15) and non-OSA (AHI < 15) were grouped according to AHI. The primary endpoint of the study was major adverse cardiovascular and cerebrovascular events (MACCEs), defined as a composite of cardiovascular death, myocardial infarction, stroke, ischemia-driven revascularization, or hospitalization for UAP or heart failure.

Results

Overall, 752 patients were prospectively enrolled. At a median follow-up of 1 year, the incidence of MACCEs was significantly higher in the OSA than in the non-OSA group (hazard ratio [HR]:1.68; 95% confidence interval [CI]:1.04–2.72; P = .034). ICR was associated with a higher risk of MACCEs in the non-OSA group (HR:3.34;95% CI:1.0–11.12; P = .05). The OSA patients with ICR had a 5.1 higher risk of MACCEs compared with the non-OSA with CR group, P = .007. The OSA patients with CR had a similar 1-year MACCEs as all the non-OSA patients (HR:1.10; 95% CI:0.515–2.349; P = 0.806).

Conclusions

ACS patients with OSA and ICR have a high rate of MACCEs at 1 year. In contrast, the prognosis of ACS patients with OSA but CR is favorable and similar to patients without OSA. Adequate level of revascularization is recommended to optimize clinical outcomes in ACS patients with OSA.

Trial registration

Clinicaltrials.gov identifier NCT03362385.