Pinheiro Machado G, et al. - Researchers assessed whether neutrophil-to-lymphocyte ratio (NLR) has utility as a predictor of procedural adverse events in 664 consecutive patients with ST-segment elevation myocardial infarction (STEMI) [with a mean age of 60.5 (±12.1) years and 66.3% were male] who had primary percutaneous coronary intervention (PCI) and were divided into low and high NLR, whereas high was defined as an NLR value above 75° percentile (≥9.45). They found that distal embolization, no-reflow, and procedural complications were independently predicted by high NLR. For these procedural outcomes, an excellent negative predictive value was demonstrated by a low NLR value. Overall, NLR could afford a bedside tool which may be a useful and inexpensive.