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Published on: January 18, 2018
"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.
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.
Abstract:
Percutaneous coronary intervention of bifurcation lesions is associated with an increased risk of complications in patients with acute coronary syndrome (ACS). The study aimed to evaluate the in-hospital outcomes of patients with ACS with culprit bifurcation lesions who were treated with either a "main vessel-oriented" (MVO) treatment strategy or an "open side branch" (OSB) treatment strategy. This retrospective study included 575 consecutive patients with ACS. "MVO" and "OSB" treatment strategies were defined as primary/urgent percutaneous coronary intervention procedures performed by either totally ignoring the side branch (SB) or trying to maintain both main vessel and SB open with thrombolysis in myocardial infarction 3 flow. Procedural success and major cardiac/cerebrovascular events during hospitalization were noted. MVO and OSB treatment strategies were performed on 384 and 191 patients, respectively. The procedural success rate was significantly higher in the OSB treatment strategy whereas major cardiac/cerebrovascular events rates were similar except for the contrast-induced nephropathy rate being slightly higher in OSB treatment strategy. Subgroup analysis revealed a significantly higher procedural success rate in OSB treatment strategy if the SB was located within the bifurcation core, especially in those where the diameter of SB was ≥2 mm. In conclusion, our results suggest a better procedural result with SB protection attempts in patients with ACS with a culprit bifurcation lesion if the SB is originating within the bifurcation core and its diameter is ≥2 mm. MVO treatment strategy may be preferred in most cases with minor SBs located distant to the bifurcation core because of the similar procedural success.
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