Percutaneous coronary intervention (PCI) is an acceptable alternative revascularization strategy to coronary artery bypass grafting for selected patients with unprotected left main coronary artery disease (LMCAD). Concomitant coronary artery disease (CAD) in other epicardial vessels is a frequent finding in patients with LMCAD, and the operator may consider several PCI sessions to optimally complete myocardial revascularization.
Staging may also be required to minimize radiation or contrast use, because of procedural complications, operator/patient fatigue, or for reimbursement reasons (1). No randomized trial has investigated the impact of staging PCI in patients with stable multivessel CAD; hence, limited data are available regarding the safety and efficacy of staging PCI procedures. [...]

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Journal JACC: Cardiovascular Interventions
Collet, C, Modolo, R, Banning, A, Kandzari, D.E, Stables, R.H, Dressler, O, … Serruys, P.W.J.C. (2019). Impact of Staging Percutaneous Coronary Intervention in Left Main Artery Disease. JACC: Cardiovascular Interventions, 12(4), 411–412. doi:10.1016/j.jcin.2018.11.027