Differences in coronary microcirculation measurements during regadenoson vs. adenosine - induced hyperemia.

Background: Little is known about the similarity of microcirculation assessment outcomes performed with regadenoson and adenosine. The aim of the current study was to compare coronary flow reserve (CFR) and index of microcirculatory resistance (IMR) assessment using adenosine and regadenoson, and to evaluate predictors regarding the size of differences.

Methods: 44 patients were enrolled and diagnosed between 2021 and 2023.

Long-term outcomes of DCB and DES for the treatment of in-stent restenosis in relation to the vessel size.

Background: Percutaneous coronary intervention (PCI) with drug-coated balloons (DCB) or drug-eluting stents (DES) are well-established treatments for in-stent restenosis, however little is known about the impact of vessel size on the outcomes. The study aimed to evaluate the efficacy and safety profile of DCB versus DES in DES in-stent restenosis depending on the vessel size.

Methods: Consecutive patients with DES in-stent restenosis who underwent PCI between January 2010 and February 2018 entered the registry with a long-term follow-up.

Risk factors of cardiac arrest during a percutaneous coronary intervention performed with rotational atherectomy - analysis based on a Large National Registry.

Background: Rotational atherectomy (RA) is traditionally administered for patients with heavily calcified lesions and is thereby characterized by a high risk of the performed intervention. However, the prevalence characteristics of cardiac arrest are poorly studied in this group of patients. We aimed to evaluate the frequency and risk factors of cardiac arrest during percutaneous coronary interventions (PCI) performed with RA and preceding coronary angiography (CA).