Revascularization following non-ST elevation myocardial infarction in multivessel coronary disease

An observational study of therapeutic procedures and in-hospital outcomes among patients admitted for acute myocardial infarction in Spain, 2016-2022: the role of diabetes mellitus

BACKGROUND

We used the Spanish national hospital discharge data from 2016 to 2022 to analyze procedures and hospital outcomes among patients aged ≥ 18 years admitted for ST-elevation myocardial infarction (STEMI) and non-ST-elevation myocardial infarction (NSTEMI) according to diabetes mellitus (DM) status (non-diabetic, type 1-DM or type 2-DM).

METHODS

We built logistic regression models for STEMI/NSTEMI stratified by DM status to identify variables associated with in-hospital mortality (IHM). We analyzed the effect of DM on IHM.

RESULTS

Spanish hospitals reported 201,950 STEMIs (72.7% non-diabetic, 0.5% type 1-DM, and 26.8% type 2-DM; 26.3% female) and 167,285 NSTEMIs (61.6% non-diabetic, 0.6% type 1-DM, and 37.8% type 2-DM; 30.9% female). In STEMI, the frequency of percutaneous coronary intervention (PCI) increased among non-diabetic people (60.4% vs. 68.6%; p < 0.001) and people with type 2-DM (53.6% vs. 66.1%; p < 0.001). In NSTEMI, the frequency of PCI increased among non-diabetic people (43.7% vs. 45.7%; p < 0.001) and people with type 2-DM (39.1% vs. 42.8%; p < 0.001). In NSTEMI, the frequency of coronary artery by-pass grafting (CABG) increased among non-diabetic people (2.8% vs. 3.5%; p < 0.001) and people with type 2-DM (3.7% vs. 5.0%; p < 0.001). In the entire population, lower IHM was associated with undergoing PCI (odds ratio [OR] [95% confidence interval] = 0.34 [0.32-0.35] in STEMI; 0.24 [0.23-0.26] in NSTEMI) or CABG (0.33 [0.27-0.40] in STEMI; 0.45 [0.38-0.53] in NSTEMI). IHM decreased over time in STEMI (OR = 0.86 [0.80-0.93]). Type 2-DM was associated with higher IHM in STEMI (OR = 1.06 [1.01-1.11]).

CONCLUSIONS

PCI and CABG were associated with lower IHM in people admitted for STEMI/NSTEMI. Type 2-DM was associated with IHM in STEMI.

Outcomes of Patients Presenting With Non-ST Elevation Myocardial Infarction Who Underwent Surgical Revascularization

Non-ST-segment elevation myocardial infarction (NSTEMI) is a leading cause of emergency hospitalization across Europe. This study evaluates the in-hospital and mid-term outcomes of patients who underwent coronary artery bypass graft (CABG) after NSTEMI. A retrospective analysis of all cases who underwent isolated CABG after NSTEMI from September 2017 to September 2022 at our center. Patients were stratified according to in-hospital survival. Patient characteristics, operative details, and procedural complications were compared between those who survived and those who did not. Predictors of in-hospital and mid-term mortality were evaluated using logistic and Cox regression modeling. Kaplan-Meier analysis was used to generate a survival curve for all alive patients at the time of discharge. Among 1,011 patients (median age 64 [56 to 72] years, 852 [84.3%] male), 735 (72.7%) underwent urgent, 239 (23.6%) elective, and 37 (3.7%) emergency CABG. The in-hospital mortality was 1.5% (15/1,011 patients). Those who died were more likely to be New York Heart Association class III/IV, have left ventricular ejection fraction <21%, severe renal impairment, peripheral vascular disease (PVD), or poor mobility. Emergency procedures, preoperative ventilation, inotropic support, and intra-aortic balloon pump (IABP) use were also more prevalent among those who died. Logistic regression modeling revealed new postoperative stroke (odds ratio 22.0, 95% confidence interval 3.6 to 135.5, p = 0.001), preoperative IABP use (11.4; 2.4 to 53.7, p = 0.002), new hemodialysis (9.6; 2.7 to 34.7, p <0.001), PVD (5.6; 1.6 to 20.0, p = 0.008), and poor mobility (odds ratio 4.8, 95% confidence interval 1.3 to 18.2, p = 0.022) as independent predictors of in-hospital mortality. In conclusion, new postoperative stroke, preoperative IABP use, new hemodialysis, PVD, and poor mobility are independent predictors of mortality in patients with NSTEMI who underwent isolated CABG.

Staged versus concomitant transcatheter aortic valve replacement and percutaneous coronary intervention: A national analysis

Objective

Methods

Results

Conclusions

A systematic review and meta-analysis of percutaneous coronary intervention compared to coronary artery bypass grafting in non-ST-elevation acute coronary syndrome

Non-ST-elevation acute coronary syndrome (NSTE-ACS) affects millions of patients. Although an invasive strategy can improve survival, the optimal treatment [i.e., percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG)] is not clear. We performed a meta-analysis of studies reporting outcomes between PCI and CABG in patients with NSTE-ACS. MEDLINE, EMBASE and Cochrane Library were assessed. The primary outcome was long-term mortality. Inverse variance method and random model were performed. We identified 13 observational studies (48,891 patients). No significant difference was found in the primary endpoint [CABG vs. PCI, incidence rate ratio (IRR) 0.93, 95% confidence interval (CI) 0.70; 1.23]. CABG was associated with lower long-term major adverse cardiovascular events (MACE) (IRR 0.64, 95% CI 0.54; 0.76) and lower long-term re-revascularization (IRR 0.37, 95% CI 0.30; 0.47). There was no significant difference in long-term myocardial infarction (CABG vs. PCI, IRR 0.96, 95% CI 0.50; 1.84) and peri-operative mortality (CABG vs. PCI, odds ratio 1.36, 95% CI 0.94; 1.95). For the treatment of NSTE-ACS, CABG and PCI are associated with similar rates of long-term mortality and myocardial infarction. CABG is associated with lower rates of long-term MACE and re-revascularization. Randomized comparisons in this setting are necessary.

Re-evaluating the Role of CABG in Acute Coronary Syndromes

PURPOSE OF REVIEW

The use of coronary artery bypass grafting (CABG) in patients with acute coronary syndrome (ACS) has markedly declined during the past decade, with an increase in the use of percutaneous coronary intervention (PCI). However, long-term data continues to show survival advantages for patients undergoing CABG over PCI. We describe the current indications for and outcomes of CABG in patients who present with ACS.

RECENT FINDINGS

Real-world studies demonstrate better long-term outcomes with CABG than with PCI after NSTE-ACS. Staged CABG after culprit-vessel PCI for STEMI is also a feasible option in certain patients. In patients presenting with ACS and cardiogenic shock who are treated with CABG, the use of mechanical circulatory support has produced a limited but significant reduction in mortality. The optimal revascularization strategy after ACS depends on many variables. The pre-eminent factor in selecting the best mode of revascularization and improving outcomes is careful patient selection based on deliberation by an interdisciplinary heart team.