Percutaneous coronary intervention for major bifurcation lesions using the simple approach: risk of myocardial...

Area of Science:

• Interventional Cardiology
• Vascular Medicine
• Medical Device Technology

Background:

• Percutaneous coronary intervention (PCI) for bifurcation lesions remains complex.
• Simple stenting, focusing on the main vessel, is increasingly suggested as a preferred strategy.
• Outcomes of this approach in a real-world setting require further investigation.

Purpose of the Study:

• To assess the feasibility and clinical outcomes of provisional main vessel stenting in patients with major coronary artery bifurcation lesions.
• To identify predictors of side branch (SB) compromise following this stenting strategy.

Main Methods:

• A registry analysis of 1,600 consecutive patients undergoing PCI between August 2004 and 2005.
• Identification of patients with major bifurcation lesions (>=70% stenosis in main vessel or side branch >=2mm).
• Analysis of angiographic, clinical, and treatment factors associated with final SB compromise (>=70% stenosis or TIMI <3 flow).

Main Results:

• 158 patients underwent provisional main vessel stenting.
• Permanent SB compromise occurred in 16% of patients, linked to increased risk of periprocedural myocardial infarction (MI) and renal failure.
• Independent predictors of SB compromise included lack of pre-PCI beta-blockers, diabetes mellitus, eccentric main vessel lesion, and small SB diameter.

Conclusions:

• The "simple" provisional main vessel stenting approach for major bifurcation lesions is associated with a notable rate of significant periprocedural complications.
• Side branch compromise is a critical endpoint that warrants careful consideration and risk factor management.
• Further strategies may be needed to mitigate risks in unselected patient populations undergoing this technique.