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Assessment of the relationship between bleeding and post-percutaneous coronary intervention (PCI) mortality is hampered by overlapping patient variables that may predict both events. In an analysis of data from the national CathPCI Registry, investigators examined more than 3.3 million procedures performed between 2004 and 2011 and identified 57,246 major bleeding events (1.69%) and 22,165 in-hospital deaths (0.65%). Major bleeding was defined as the need for transfusion, prolonged hospital stay, or a decrease in hemoglobin of more than 3.0 g/dL.
Unadjusted in-hospital mortality was higher in patients with than in those without major bleeding complications (5.6% vs. 0.6%; P<0.001). In a propensity-matched analysis, bleeding remained associat…