CONCLUSION
Results of our study suggest that inflammation can play an important role during TAVR and that NLR at TAVR day could be an easy-to-calculate factor that can provide new insights in the mechanisms of new CAs after TAVR. Even if NLR is not predictive, as the value becomes significant only after the procedure, in patients without pre-procedural CAs and NLR at TAVR day >7.25, attention has to be paied to the possibility of late development of a new CAs that needs PPI for at least 21 days. Further studies are warranted to confirm the findings of our research.