Myocardial Revascularization in Patients With 3 Vessel Coronary Artery Disease and Chronic Kidney Disease: Coronary Artery Bypass Grafting Versus Percutaneous Coronary Intervention

Coronary artery disease (CAD) and chronic kidney disease (CKD) commonly co-exist. Superior outcomes with coronary artery bypass grafting(CABG) compared to percutaneous coronary intervention (PCI) have been identified in patients with 3 vessel CAD (TVD) and CKD but have been limited to mid-term follow-up. Herein, we analyzed the long-term outcomes of patients with TVD and CKD undergoing surgical versus percutaneous revascularization. 1,599 patients with CKD and TVD without STEMI or previous revascularization underwent coronary angiography between 2009 and 2018. The primary outcome was all-cause mortality. Secondary outcomes included rates of readmission for myocardial infarction (MI), stroke, repeat revascularization, and overall rehospitalization. 453 patients were included in the final analysis (PCI 373; CABG 80; median follow-up 9.3 years). All results are presented as CABG versus PCI. The rate of all-cause mortality at the longest follow-up (14.1 years) was significantly lower in patients who underwent CABG (68.9% vs 83.1%, p = 0.039, adjusted Hazard Ratio (aHR) 0.68, 95% confidence interval (CI) 0.47-0.98). Readmission rates for MI (10.2% vs. 28.4%, p = 0.009, aHR 0.37, 95% CI 0.17-0.77) and repeat revascularization (3.1% vs. 24.4%, p < 0.001, aHR 0.09, 95% CI 0.02-0.34) were also lower after CABG than after PCI. No significant difference was observed in the rates of readmission for stroke or all causes. In conclusion, in this retrospective single-center study, we confirmed that the previously described advantages of CABG over PCI in patients with CKD and TVD persist with extended long-term follow-up. CABG should be considered the gold standard approach to revascularization in this patient population.

Myocardial revascularization in patients with chronic kidney disease: a systematic review and meta-analysis of surgical versus percutaneous coronary revascularization

OBJECTIVES

To compare outcomes of two different revascularization strategies in chronic kidney disease (CKD) patients: coronary artery bypass grafting (CABG) versus percutaneous coronary intervention (PCI).

METHODS

We conducted this meta-analysis according to Preferred Reporting Items for Systematic Review and Meta-Analyses guidelines and registered with PROSPERO (CRD42021238659), evaluated studies comparing CABG and PCI in patients with CAD and CKD (defined by KDIGO guidelines). Data were extracted from PubMed, EMBASE and Cochrane from 2000 to 2023. The primary end-point was long-term major adverse cardiovascular and cerebrovascular event rates, with secondary end-points including 30-day mortality, stroke, myocardial infarction (MI) and repeat revascularization. Statistical analyses included Kaplan-Meier estimations, Cox regression, and meta-regression to address heterogeneity. Publication bias was assessed via funnel plots. No funding was received, and the authors report no conflicts of interest.

RESULTS

We included 33 studies with 402 300 patients (eGFR <60 ml/min/1.73 m2). The cohort comprised 132 314 coronary artery bypass graft and 269 986 PCI patients. Over 3 years, coronary artery bypass group provided protection against major adverse cardiac and cerebrovascular events, MI, and repeat revascularization compared to PCI. However, PCI showed better short-term outcomes, including lower 30-day mortality. Coronary artery bypass group was linked to a higher stroke risk over the 3-year follow-up.

CONCLUSIONS

Revascularization strategies for CKD and coronary artery disease patients should balance PCI's short-term benefits with CABG's long-term advantages.

Differential Impact of Chronic Kidney Disease Stages on the Survival Benefit of Percutaneous Coronary Intervention: A Large Real-world Cohort Study

Chronic kidney disease (CKD) is prevalent among patients with coronary artery disease (CAD) and exacerbates myocardial ischemia. However, the survival benefit of percutaneous coronary intervention (PCI) across different stages of CKD remains controversial. CAD patients (n = 17,418) with CKD (mean age, 69.5 ± 9.9 years; 70.9% male) were included in the Cardiorenal Improvement II cohort from 2007 to 2020. Patients were grouped by PCI or medical treatment and further categorized by stages 3a-5 CKD. Multivariable Cox regression was performed to investigate the associations of cardiovascular- and all-cause mortality with PCI and CKD stage, and to compare predictors of outcomes in patients stratified by advanced CKD. During a median follow-up of 4.2 years, 4605 (26.4%) participants died. Compared with medical treatment, PCI was not associated with improved survival benefit among patients with stage 3b-5 CKD (all P > .05). Among patients with advanced CKD, hypertension, hyperfibrinogenemia and moderate-severe malnutrition were more significantly associated with increased cardiovascular mortality with relatively high attributable risk. PCI was not associated with a survival advantage among patients with advanced CKD. Hypertension, hyperfibrinogenemia and malnutrition may contribute to poor prognosis in patients with advanced kidney disease.

Does Chronic Kidney Disease Influence Revascularization Strategy After Acute Coronary Syndrome? A Systematic Review and Meta-Analysis

Background

Coronary artery bypass grafting (CABG) provides superior long-term outcomes to percutaneous coronary intervention (PCI) for complex multivessel coronary artery disease (CAD). People with chronic kidney disease (CKD) have increased prevalence of multivessel CAD, but also increased surgical risk. We investigated whether CKD predicted real-world use of CABG, versus PCI, in patients revascularized for acute coronary syndrome (ACS).

Methods

Embase, MEDLINE, Scopus and CENTRAL were searched to identify articles referring to ACS and invasive coronary intervention in high-income countries (2012 - 2023). Articles were included if CABG rates were reported in ACS patients with and without CKD receiving revascularization. CKD was defined as an estimated glomerular filtration rate < 60 mL/min/1.73 m2; proxy definitions were accepted. Random effect meta-analyses were used to determine the average effect of CKD on odds of CABG, stratified by ACS type and dialysis use.

Results

Searches generated 15,138 articles, of which 13 observational studies were included (n = 1,682,207). Amongst revascularized ACS patients, those with CKD were more likely to receive CABG than those without (pooled odds ratio (OR) = 1.50 (95% confidence interval (CI) = 1.30 - 1.72). This association was stronger following ST-elevation myocardial infarction (STEMI) than non-ST-elevation ACS (NSTE-ACS) (OR: 1.54 (95% CI: 1.23 - 1.93)) versus 1.16 (1.10 - 1.23), respectively).

Conclusions

In high-income countries, revascularized ACS patients with CKD receive CABG (versus PCI) more frequently than those without kidney disease. However, accounting for lower use of coronary angiography in the CKD population removed this association following NSTE-ACS. Greater use of invasive angiography in those with NSTE-ACS and CKD might therefore increase access to revascularization, and thereby improve outcomes.

Radial artery vs right internal mammary artery as a second conduit during coronary artery bypass grafting

OBJECTIVE

To compare the clinical outcomes of radial artery (RA) grafts during CABG to those of right internal mammary artery (RIMA) grafts.

METHODS

This was a retrospective, single-institution cohort study of isolated CABG with multiple grafts between 2010-2022. To balance graft cohorts, propensity score matching (PSM) was performed using a 1:1 match ratio. Long-term postoperative survival was compared among RA and RIMA groups. Similarly, major adverse cardiac and cerebrovascular events (MACCE) were compared among both cohorts, with MACCE comprising death, myocardial infarction (MI), coronary revascularization, and stroke. Kaplan-Meier estimation was performed for mortality, while cumulative incidence estimation was utilized for MACCE.

RESULTS

A total of 8,774 patients underwent CABG. Of those, 1,674 (19.1%) patients who underwent multiarterial CABG were included in this analysis. 326 (19.5%) patients received RA grafts and 1,348 (80.5%) received RIMA grafts. PSM yielded a cohort of 323 RA patients and 323 RIMA patients. After matching, groups were well-balanced across all baseline variables. No significant differences were observed in immediate postoperative complications or long-term survival, with 5-year survival estimates of 89.5% for the RA group vs 90.1% for the RIMA group. There was a nonsignificant trend toward a higher incidence of MACCE at 5 years in the RA group compared to the RIMA group (31.3% in the RA group vs 24.1% in the RIMA group), especially after 1-year follow-up (21.6% in the RA group vs 15.1% in the RIMA group). Specifically, for RA patients, there were higher rates of repeat revascularization in the 5-year postoperative period (14.7% in the RA group vs 5.3% in the RIMA group), particularly in the territory revascularized by the RA during the index operation (45.7% in the RA group vs 10.3% in the RIMA group).

CONCLUSION

Overall, RA and RIMA secondary conduits for CABG were associated with comparable immediate postoperative complications, 5-year MACCE, and 5-year survival after PSM. RA grafting was associated with significantly higher rates of repeat coronary revascularization at 5 years, specifically in the territory revascularized by the RA during the index operation.

Outcomes of Radial Artery Versus Saphenous Vein as A Second Conduit After Coronary Artery Bypass Grafting

Despite the advantages of multiarterial grafting, saphenous vein (SV) configurations predominate in coronary artery bypass grafting (CABG). In addition, the benefits of radial artery (RA) utilization in multivessel CABG remain unclear. This study aims to compare the clinical outcomes of patients who received RA grafts during CABG with those of patients who received SV grafts. A retrospective, single-institution cohort study was performed in 8,774 adults who underwent isolated CABG surgery with multiple grafts between 2010 and 2022. To balance graft cohorts, propensity score matching (PSM) was performed using a 1:2 (RA/SV) match ratio. Long-term postoperative survival was compared in RA and SV graft groups. Similarly, major adverse cardiac and cerebrovascular event (MACCE) rates were compared in the cohorts, with MACCE comprising death, myocardial infarction (MI), coronary revascularization, and stroke. Kaplan-Meier estimation was performed for both mortality and MACCE. A total of 7,218 patients (82.3%) who underwent multivessel CABG were included in this analysis. Of these patients, 341 (4.7%) received RA grafts, and 6,877 (95.3%) received SV grafts secondary to left internal mammary artery use. PSM yielded a cohort of 335 patients with RA and 670 patients with SV. After matching, groups were well balanced across all baseline variables. No significant differences were observed in either immediate postoperative morbidities or long-term survival. However, Kaplan-Meier estimates of long-term postoperative freedom from MACCE were significantly greater in matched patients with SV (73.3%) than in those with RA (67.4%) (p = 0.044, cluster log-rank), with patients with SV also possessing significantly greater freedom from coronary revascularization and MI. In conclusion, RA and SV secondary conduits for CABG were associated with comparable immediate postoperative complications and long-term survival after PSM. SV grafting was associated with significantly decreased rates of postoperative MACCE, likely owing to lower rates of coronary revascularization and MI than in RA grafting.

The Better Option of Revascularization in Complex Coronary Artery Disease Patients Complicate With Chronic Kidney Disease: A Review and Meta-Analysis

The treatment of complex coronary artery disease (CAD) combined with chronic kidney disease (CKD) faces great challenges. We thus did a systematic review and meta-analysis to assess the effect of percutaneous coronary intervention (PCI) and coronary artery bypass graft (CABG). We systematically searched PubMed, Embase, Cochrane Library and other relevant articles refer to reference. Our main endpoints were main adverse cardiovascular and cerebrovascular events (MACCE), all cause death, myocardial infarction (MI), repeat revascularization and stoke. 24 studies were included in our analysis. Compared with PCI, CABG improved outcomes such as MACCE (Odds Ratio [OR] 1.75; 95%CI 1.26-2.42), all cause death (OR 1.13; 95%CI 1.00-1.28), repeat revascularization (OR 4.24; 95%CI 3.29-5.47) and MI (OR 2.16; 95%CI 1.59-2.91), but stoke (OR 0.84, 95%CI 0.61-1.17). CABG shows absolute advantage in complex CAD complicated with CKD and ESRD patients than stent implantation in the long-term following-up.

Survival outcomes and adverse events in patients with chronic kidney disease after coronary artery bypass grafting and percutaneous coronary intervention: a meta-analysis of propensity score-matching studies

BACKGROUND

The present meta-analysis of propensity score-matching studies aimed to compare the long-term survival outcomes and adverse events associated with coronary artery bypass grafting (CABG) and percutaneous coronary intervention (PCI) in patients with chronic kidney disease (CKD).

METHODS

Electronic databases were searched for studies comparing CABG and PCI in patients with CKD. The search period extended to 13 February 2021. The primary outcome was all-cause mortality, and the secondary endpoints included myocardial infarction, revascularization, and stroke. Odds ratios (ORs) and hazard ratios (HRs) with 95% confidence intervals (CIs) were used to express the pooled effect. Study quality was assessed using the Newcastle-Ottawa scale. The analyses were performed using RevMan 5.3.

RESULTS

Thirteen studies involving 18,005 patients were included in the meta-analysis. Long-term mortality risk was significantly lower in the CABG group than in the PCI group (HR: 0.76, 95% CI: 0.70-0.83, p < .001), and similar results were observed in the subgroup analysis of patients undergoing dialysis and for different estimated glomerular filtration rate ranges. The incidence rates of myocardial infarction (OR: 0.25, 95% CI: 0.12-0.54, p < .001) and revascularization (OR: 0.17, 95% CI: 0.08-0.35, p < .001) were lower in the CABG group than in the PCI group, although there were no significant differences in the incidence of stroke between the two groups (OR: 1.24; 95% CI: 0.89-1.73, p > .05). Subgroup analysis among patients on dialysis yielded similar results.

CONCLUSIONS

Our propensity score matching analysis revealed that, based on long-term follow-up outcomes, CABG remains superior to PCI in patients with CKD.

Three-year clinical outcome of unprotected left main coronary artery disease patients complicated with chronic kidney disease treated by coronary artery bypass graft versus percutaneous coronary intervention

BACKGROUND

This study aimed to compare the incidence of major adverse cardiac and cerebrovascular events (MACCE) after coronary artery bypass graft (CABG) or after percutaneous coronary intervention (PCI) with drug-eluting stent (DES) in unprotected left main coronary artery disease (ULMCAD) patients complicated with chronic kidney disease (CKD).

METHODS

Three hundred sixty-eight ULMCAD patients complicated with CKD who underwent first ever CABG (n = 207) or PCI with DES (n = 161) were recruited in this prospective cohort study. Patients were followed up to MACCE occurrence or 36 months after operations, and accumulating MACCE occurrence was calculated.

RESULTS

Accumulating MACCE occurrence was decreased in CABG group compared with PCI group (P = 0.007). Subgroup analysis showed that CKD stage positively correlated with accumulating MACCE occurrence in total patients (P = 0.006) and in PCI-treated patients (P = 0.018), but not in CABG-treated patients (P = 0.217). Further univariate Cox's regression model displayed that CABG (versus (vs.) PCI) (P = 0.008) was associated with lower accumulating MACCE occurrence, while age (≥ 65 years) (P = 0.048), hyperlipidemia (P = 0.013), diabetes (P = 0.012), previous heart failure (P = 0.011), previous stroke (P = 0.030), LVEF < 50% (P = 0.048), higher CKD stage (P = 0.002), and more diseased vessels (P = 0.022) were associated with increased accumulating MACCE occurrence. Forward stepwise multivariate Cox's regression model disclosed that CABG (vs. PCI) (P = 0.002) independently predicted decreased accumulating MACCE occurrence, whereas hyperlipidemia (P = 0.033), diabetes (P = 0.002), higher CKD stage (P = 0.001), and more diseased vessels (P = 0.009) independently predicted elevated accumulating MACCE occurrence.

CONCLUSION

CABG could be considered as the preferred treatment strategy compared with PCI with DES in ULMCAD patients complicated with CKD.