NPPB and myocardial infarction: Meanwhile, UMI in the target vessel territories and log (NT-proBNP) before the index PCI were independent predictors of the occurrence of PPL (OR 3.77, 95% CI 1.52–9.36, P = 0.004; OR 1.32, 95% CI 1.05–1.65, P = 0.016, respectively), whereas the presence of recognized myocardial infarction in the target area was not significant (OR 1.06, 95% CI 0.38–3.00, P = 0.91) (Table 3).