"Main Vessel-Oriented" Treatment Strategy Versus "Open Side Branch" Treatment Strategy in Acute Coronary Syndrome

Kursat Tigen1, Zekeriya Dogan1, Murat Sunbul1

  • 1Department of Cardiology, Marmara University Faculty of Medicine, Istanbul, Turkey.

PubMed

Insights

For acute coronary syndrome (ACS) patients with bifurcation lesions, the open side branch (OSB) strategy improved procedural success, especially for larger side branches. Main vessel-oriented (MVO) strategies are suitable for minor side branches.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Acute Coronary Syndromes

Background:

  • Percutaneous coronary intervention (PCI) in acute coronary syndrome (ACS) patients with bifurcation lesions carries a higher risk of complications.
  • Treatment strategies for these complex lesions require careful consideration to optimize outcomes.

Purpose of the Study:

  • To compare in-hospital outcomes of "main vessel-oriented" (MVO) versus "open side branch" (OSB) treatment strategies in ACS patients with culprit bifurcation lesions.
  • To identify specific lesion characteristics that may favor one strategy over the other.

Main Methods:

  • Retrospective analysis of 575 consecutive ACS patients undergoing PCI for bifurcation lesions.
  • Patients were categorized into MVO (ignoring side branch) or OSB (maintaining side branch patency) groups.
  • Procedural success and major adverse cardiac/cerebrovascular events were assessed.

Main Results:

  • The OSB strategy demonstrated a significantly higher procedural success rate compared to MVO.
  • Major adverse cardiac/cerebrovascular events were similar between groups, with slightly higher contrast-induced nephropathy in the OSB group.
  • Subgroup analysis showed superior procedural success with OSB for side branches ≥2mm located within the bifurcation core.

Conclusions:

  • The OSB strategy may offer better procedural outcomes in ACS patients with bifurcation lesions, particularly when the side branch is significant (≥2mm) and originates from the bifurcation core.
  • The MVO strategy may be a reasonable alternative for minor side branches distant from the bifurcation core, given similar procedural success rates.

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