1155Prognostic impact of SYNTAX Score in patients with myocardial infarction with multivessel coronary artery disease and cardiogenic shock: insight from the CULPRIT-SHOCK Trial

Background

The majority of patients presenting with myocardial infarction (MI) and cardiogenic shock (CS) have multivessel coronary artery disease. The prognosis impact of the SYNTAX score (SS) in this setting remains unknown.

Purpose

To evaluate the prognosis value of the SS in this high-risk population undergoing percutaneous coronary intervention (PCI)

Methods

The CULPRIT-SHOCK trial was an international, open-label trial, where patients presenting with MI and multivessel disease complicated by CS were randomized to a culprit-lesion-only or an immediate multivessel PCI strategy. Pre-PCI SS was assessed by a central core laboratory and patients were categorized as low SS (SS ≤22), intermediate SS (22<SS≤32) and high SS (SS>32). Adjudicated endpoints of interest were the risks of all-cause death or renal replacement therapy at 30 days and all-cause death at 1 year. Associations between SYNTAX score and outcomes were assessed using multivariate logistic regression.

Results

SS was available in 632 patients, of whom 265 (41.9%), 211 (33.4%) and 156 (24.7%) presented with low, intermediate and high SS, respectively. Patients with higher SS were older, with more frequent peripheral artery disease, less current smoking, lower creatinine clearance, and higher use of catecholamine. A stepwise increase in the incidence of adverse events transitioning from low to intermediate and high SS was observed with the 30-day risk of death or renal replacement therapy as well as the 1-year risk of all-cause death (p for trend <0.001, for all). After multiple adjustment, intermediate and high SS remained strongly associated with 30-day risk of death and renal replacement therapy and 1-year risk of all-cause death (Figure). There was no significant interaction between SYNTAX score and the coronary revascularization strategy for all endpoints.

Conclusion

In patients presenting with acute MI, multivessel disease and CS, the SYNTAX score was strongly associated to 30-day and 1-year mortality</ss≤<ss≤32)>

Acknowledgement/Funding

The CULPRIT-SHOCK trial was Supported by a grant agreement (602202) from the European Union Seventh Framework Program and by the German Heart Research

P961Investigator versus Core Lab evaluation of coronary blood flow in PCI of patients in cardiogenic shock: a substudy of the CULPRIT-SHOCK trial

Background

Thrombolysis In Myocardial Infarction (TIMI) flow is a prognostic factor which assessment is complex in life-threatening situations. Because TIMI flow evaluation by site investigator (SI) is subject to bias, independent Core-Laboratory (CL) adjudication is the reference standard in clinical trials.

Purpose

To evaluate the concordance between CL and SI in the evaluation of the culprit artery TIMI flow, and the associated prognosis in the CULPRIT-SHOCK trial.

Methods

All patients of the CULPRIT-SHOCK trial with CL adjudications were included in this analysis. CL adjudicators were blinded to patient's characteristics and outcomes: pre and post-PCI TIMI flows were solely evaluated on the basis of coronary angiograms. SI determined the TIMI flow before and immediately after PCI of the culprit lesion. The concordance was determined by Cohen's κ coefficient. A multivariate analysis was used to evaluate 1) factors of discordance 2) the association between each method of evaluation and the mortality at 30 days and 1 year.

Results

Among CULPRIT-SHOCK patients, 663 patients were eligible for this analysis. Of the 214 patients adjudicated TIMI flow 3 by CL before PCI, SI over-estimated the obstruction to TIMI flow 0–1-2 in 121 (56.5%). Of the 139 patients scored TIMI flow 0–1-2 by CL after PCI, SI over-graded their results to TIMI flow 3 in 79 (56.8%). Overall, the K coefficient of agreement was 0.44, 95% CI [0.36; 0.51] before PCI and 0.44, 95% CI [0.35; 0.53] after PCI. Mechanical circulatory support and culprit left main were the main factors of discordance of TIMI flow after PCI. The association between TIMI flow 0–1-2 after PCI and 30-days mortality was significant, whether adjudicated by SI or CL (figure). Post-PCI TIMI-flow 0–1-2 was associated to 1-year mortality only when evaluated by SI (figure).

Association between TIMI and mortality

Conclusions

In comparison to the independant CL evaluation, SI overestimated the severity of coronary slow flow before PCI, and the success of PCI in improving coronary flow. The level of agreement between CL and SI was moderate. While both evaluations predicted 30-days mortality, only SI scoring was associated to 1-year mortality.

Acknowledgement/Funding

European Union Seventh Framework Program, the German Heart Research Foundation, German Cardiac Society.

P3124Predictive value of the residual SYNTAX score following primary PCI in multivessel patients with MI-related cardiogenic shock - a CULPRIT SHOCK sub-analysis

Background

Complete revascularization (CR) – assessed by the residual SYNTAX score (rSS) – following PCI is associated with a better prognosis – in stable coronary disease, acute coronary syndrome and myocardial infarction (MI). Whether, the completeness of revascularization impacts the prognosis of patients in cardiogenic shock (CS) remains unclear.

Aim

Assess the prognosis value of rSS following primary PCI in multivessel patients undergoing MI-related CS.

Methods

The CULPRIT SHOCK trial – the largest randomized trial (n=706) to date in CS – compared an immediate multivessel PCI (MVPCI) strategy to a culprit lesion only PCI (with possible staged revascularization) strategy in multivessel patients with MI-related CS. The rSS were retrospectively assessed following last PCI (either index or staged) by a central core laboratory and patients were allocated in 4 different groups according to rSS: CR (rSS=0), 0< rSS ≤5, 5< rSS ≤14, rSS >14. The prognostic impact of rSS on the 30-day composite endpoint (mortality and/or severe renal failure) and 30-day and 1-year mortality were assessed using multivariate logistic regression.

Results

Among the 604 patients with last rSS available, aged 68.2±11.4, the median rSS was 9.0 [4.0–17.0]. CR was achieved in 75 (25%) patients in the MVPCI strategy and in 31 (10.2%) in the culprit lesion only PCI strategy. One hundred and six (17.5%), 102 (16.9%), 198 (32.8%) and 198 (32.8%) patients had a rSS=0, 0< rss ≤5, 5< rSS ≤14 and rSS >14, respectively. Patients with a higher rSS were older, less active smoker, had more triple vessel disease, chronic total occlusion, post-PCI culprit coronary TIMI flow <3 and require more mechanical circulatory support and catecholamine. Univariate analysis shows a stepwise increase in adverse events according to rSS: patients with 5< rss ≤14 and rSS >14 had higher rates of 30-day primary endpoint (OR [95% CI]: 2.02 [1.24; 329] and 2.75 [1.69; 4.49]), 30-day mortality (OR [95% CI]: 2.13 [1.29; 3.51] and 3.14 [1.90; 5.18]) and 1-year mortality (OR [95% CI]: 2.39 [1.46; 3.90] and 3.47 [2.11; 5.71]) compared to patients with CR. After multiple adjustment, rSS – tested as continuous variable – was independently associated with 30-day primary endpoint, 30-day and one-year mortality (Figure)

Conclusion

Among multivessel patients with MI-related cardiogenic shock, 1) complete revascularization is achieved only in one fourth of the patients using a MVPCI strategy and, 2) the residual SYNTAX score is independently associated with early and late mortality.

Acknowledgement/Funding

Funded by the European Union 7th Framework Program and others

[Coronary thrombosis: Physiopathology and treatment in the era of tailored medicine]

Coronary thrombosis remains the leading cause for cardiovascular death in France. Great advances have been made in the knowledge of the basic mechanism involved in coronary thrombogenesis and in antithrombotic treatments. They have led to substantial survival benefit after myocardial infarction and enabled development of tailored therapeutic strategies, especially for high-risk patients. Direct oral anticoagulants have now entered the game for secondary prevention after coronary thrombosis.