Left Anterior Descending Nonculprit Lesions and Clinical Outcomes in Patients With ST-Segment Elevation Myocardial Infarction

Brian P. McGrath, Natalia Pinilla-Echeverri, David A. Wood, Kevin R. Bainey, Tej Sheth, Erick Schampaert, Jean Francois Tanguay, Vladimír Džavík, Robert F. Storey, Roxana Mehran, Matthias Bossard, Raul Moreno, Gianluca Campo, Sunil V. Rao, Warren J. Cantor, Shahar Lavi, Peter V. Johnston, Vincenzo Guiducci, Hahn Hoe Kim, Thenmozhi ManiHelen Nguyen, John A. Cairns, Shamir R. Mehta

Research output: Contribution to journalArticlepeer-review

Abstract

Background: In the COMPLETE (Complete vs Culprit-Only Revascularization to Treat Multi-Vessel Disease After Early PCI for STEMI) trial, complete revascularization in patients with ST-segment elevation myocardial infarction (STEMI) and multivessel disease (MVD) reduced important outcomes compared with culprit-only percutaneous coronary intervention. Whether clinical outcomes in STEMI patients with MVD are influenced by the presence of a left anterior descending (LAD) nonculprit lesion (NCL) remains unknown. Objectives: This study sought to compare: 1) cardiovascular outcomes among patients with an NCL in the proximal/mid-LAD to patients with an NCL in other locations; and 2) the benefit of NCL revascularization in patients with and without a proximal/mid-LAD NCL. Methods: The COMPLETE trial enrolled patients presenting with STEMI and MVD to angiography-guided complete revascularization vs a culprit lesion–only strategy. All coronary angiograms were evaluated in a central core laboratory. In this prespecified subanalysis, treatment effect according to proximal/mid-NCL location was determined for the coprimary outcomes of: 1) cardiovascular death or new myocardial infarction; and 2) cardiovascular death, new myocardial infarction, or ischemia-driven revascularization. Cox proportional hazards models were performed with an interaction term for treatment allocation and NCL location. Results: Of the 4,041 subjects in COMPLETE, 1,666 patients had a proximal/mid-LAD NCL (41.2%). The first coprimary outcome occurred in 8.5% (2.9%/y) of patients with a proximal/mid-LAD NCL vs 9.9% (3.4%/y) in those without (adjusted HR: 0.83; 95% CI: 0.67-1.03). Complete revascularization had a similar benefit in reducing the first coprimary outcome for patients with a proximal/mid-LAD NCL (7.7% vs 9.2%; HR: 0.85; 95% CI: 0.61-1.18) and those without (8.0% vs 11.9%; HR: 0.65; 95% CI: 0.50-0.86), with no differential treatment effect (interaction P = 0.235) Conclusions: Among patients presenting with STEMI and multivessel CAD, those with a proximal/mid-LAD NCL had similar event rates to those without. The benefit of complete revascularization between the groups was similar, with no evidence of heterogeneity.

Original languageEnglish (US)
Pages (from-to)297-307
Number of pages11
JournalJACC: Cardiovascular Interventions
Volume18
Issue number3
DOIs
StatePublished - Feb 10 2025

Keywords

  • ST-segment elevation myocardial infarction
  • left anterior descending
  • multivessel coronary artery disease
  • percutaneous coronary intervention
  • revascularization

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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