Observational studyEuropean journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery2026
Association Between Interventional Cardiologist Practice Characteristics, Coronary Artery Bypass Grafting Use, and Clinical Outcomes.
Observational study in European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectivesQuantify inter-operator variation in referred coronary artery bypass grafting (CABG) following angiography and evaluate associations with practice patterns and long-term outcomes.
methodsObservational study using administrative health data in British Columbia, Canada (2010-2024). Interventional cardiologist-level CABG Rate was defined as the proportion of referred CABGs to total angiograms performed. Variation across Interventionalists was correlated with other practice characteristics. Among patients undergoing angiography followed by revascularization, associations between operator CABG Rate and all-cause mortality, major adverse cardiovascular events (MACEs), and repeat revascularization were evaluated using hierarchical Cox regression.
resultsAmong 252 408 angiograms by 40 Interventionalists, CABG Rate varied 13-fold (2.03%-26.4%) and was not explained by hospital-level factors alone (intraclass correlation coefficient [ICC]: 0.358; 95% confidence interval [CI], 0.054-0.621). Higher CABG Rates were associated with lower percutaneous coronary intervention (PCI) utilization (R = -0.60; P < .001), lower PCI extensiveness (R = -0.52; P < .001), and lower procedural volume (R = -0.36; P = .022). In 73,603 first-time revascularized patients, CABG Rate was associated with reduced repeat revascularization (hazard ratio [HR] = 0.075; P < .001), without differences in mortality or MACE.
conclusionsReferred CABG varies markedly between Interventionalists and reflects operator practice style. Higher CABG utilization is associated with more durable revascularization without impact on survival or MACE. Broader implementation of multidisciplinary Heart Teams may improve consistency of care.
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