Prognostic impact of prepercutaneous coronary intervention TIMI flow in patients with ST-segment and non-ST-segment elevation myocardial infarction: Results from the FAST-MI 2010 registry

Summary Background Thrombolysis in myocardial infarction (TIMI) flow grade 2 or 3 before percutaneous coronary intervention (PCI) in acute myocardial infarction (AMI) is associated with improved outcomes. However, no recent data are available on its impact beyond 1 year and/or by type of AMI. Aims To assess the prognostic impact of prePCI TIMI flow at 30 days and 3 years in patients with ST-segment elevation (STEMI) or non-ST-segment elevation (NSTEMI) AMI. Methods We compared long-term outcomes associated with TIMI flow grade 2/3 versus 0/1 in patients referred for PCI in the nationwide French registry of acute ST-segment elevation or non-ST-segment elevation myocardial infarction (FAST-MI) 2010. Results TIMI flow grade 2/3 was found in 41% of patients with STEMI and 69% of patients with NSTEMI; it was associated with a lower risk of 30-day death in patients with STEMI (odds ratio 0.30, 95% confidence interval [CI] 0.12–0.77; P  = 0.01), but not in patients with NSTEMI (odds ratio 0.57, 95% CI 0.22–1.42; P  = 0.23). TIMI grade flow 2/3 was also associated with a lower risk of 3-year death in patients with STEMI (hazard ratio 0.69, 95% CI 0.49–0.98; P  = 0.04), but not in patients with NSTEMI (hazard ratio 0.79, 95% CI 0.56–1.11; P  = 0.17). Conclusion TIMI flow grade 2/3 is observed more often in patients with NSTEMI; it is an independent predictor of early and late survival in patients with STEMI, but is not significantly related to early or long-term survival in patients with NSTEMI.