The clinical effect of completeness of revascularization remains an issue of importance in interventional cardiology. Complete revascularization has been held up as a standard, and outcomes of both percutaneous coronary intervention (PCI) and coronary surgery are better in patients who are completely revascularized in most but not all studies.1-4 How often is complete revascularization performed in practice, and how important is it for outcomes? Does outcome depend not just on whether there is incomplete revascularization but also on how incomplete it is?