Publications by authors named "Stefano Rigattieri"

Background: a wider left main bifurcation angle (LMBA) has been linked to severe plaque development in the proximal left anterior descending artery (LAD). This study aimed to identify predictors of severe proximal LAD stenosis and major adverse cardiovascular events (MACE) using coronary computed tomography angiography (CCTA).

Methods: from an initial cohort of 650 consecutive patients, we analyzed 499 patients who met the inclusion criteria after exclusions.

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Article Synopsis
  • International guidelines recommend using direct oral anticoagulants (DOAC) over vitamin K antagonists (VKA) and dual antithrombotic therapy (DAT) over triple antithrombotic therapy (TAT) for patients on oral anticoagulant therapy undergoing percutaneous coronary intervention (PCI) with stents.
  • A study involving 1234 patients on oral anticoagulants assessed the outcomes of DOAC versus VKA and DAT versus TAT, focusing on net adverse clinical events (NACE) at a one-year follow-up.
  • Results showed DOAC resulted in a lower NACE rate compared to VKA (16% vs 23%), and while DAT and TAT had similar NACE rates, DAT led to
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Percutaneous left atrial appendage occlusion (LAAO), currently recognized as a procedure with relatively low risk, is increasingly being adopted in clinical practice. However, due to the preventive nature of the procedure and the necessity to compare it with newer and safer oral anticoagulants, further optimization is required to address remaining challenges. These latter include acquiring comprehensive data on safety and efficacy, establishing standardized pre-procedural planning, and simplifying procedural process.

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in patients undergoing percutaneous coronary interventions (PCI), radial access should be favoured over femoral access as it reduces the risk of vascular complications and bleeding. Furthermore, a preventive role of radial access in the occurrence of acute kidney injury (AKI), mainly mediated by the reduction of bleeding and cholesterol crystal embolization into renal circulation, has been investigated in several studies, yielding conflicting results. we designed a retrospective study to appraise the effect of the use of a vascular access site on the occurrence of AKI in a cohort of 633 patients with acute myocardial infarction treated by PCI at our centre from 2018 to 2020.

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Aims: The present analysis from the Functional Assessment in Elderly Myocardial Infarction Patients with Multivessel Disease (FIRE) trial aims to explore the significance of pre-admission physical activity and assess whether the benefits of physiology-guided complete revascularization apply consistently to sedentary and active older patients.

Methods And Results: Patients aged 75 years or more with myocardial infarction (MI) and multivessel disease were randomized to receive physiology-guided complete revascularization or culprit-only strategy. The primary outcome was a composite of death, MI, stroke, or any revascularization within a year.

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Aims: The role of coronary calcification on clinical outcomes among different revascularization strategies in patients presenting with acute coronary syndromes (ACSs) has been rarely investigated. The aim of this investigation is to evaluate the role of coronary calcification, detected by coronary angiography, in the whole spectrum of patients presenting with acute ACS.

Methods And Results: The present study was a post hoc analysis of the MATRIX programme.

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Background: To assess the reproducibility of coronary tissue characterization by an Artificial Intelligence Optical Coherence Tomography software (OctPlus, Shanghai Pulse Medical Imaging Technology Inc.).

Methods: 74 patients presenting with multivessel ST-segment elevation myocardial infarction (STEMI) underwent optical coherence tomography (OCT) of the infarct-related artery at the end of primary percutaneous coronary intervention (PPCI) and during staged PCI (SPCI) within 7 days thereafter in the MATRIX (Minimizing Adverse Hemorrhagic Events by Transradial Access Site and angioX) Treatment-Duration study (ClinicalTrials.

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Introduction: Technological advancements in transcatheter heart valve platforms are essential in order to achieve high standards of efficacy and safety in transcatheter aortic valve replacement (TAVR).

Aim: To evaluate the performance of the new version of the Portico valve delivery system (FlexNav) as compared to the first-generation device.

Material And Methods: In this single-center, observational study consecutive patients undergoing Portico valve implantation with the new FlexNav delivery system (DS) were compared with patients treated with the first-generation delivery system (1 gen DS).

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Background: The role of lipoprotein(a) (Lp[a]) in risk stratification following an acute myocardial infarction (AMI) is still debated. We aimed to investigate whether elevated Lp(a) levels in patients with AMI treated by percutaneous coronary intervention (PCI) are associated with worse outcomes.

Methods: We designed a retrospective registry including patients with AMI undergoing PCI.

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Aim: Percutaneous coronary intervention with stent implantation (PCI-S) in patients requiring chronic oral anticoagulant therapy (OAC) is associated with an increased risk of bleeding and ischemic complications. Different randomized studies showed a significant advantage of a double antithrombotic therapy and superiority of direct oral anticoagulant (DOAC) compared with warfarin, but real-world data are limited. Aim is to evaluate the antithrombotic management and clinical outcome of patients with an indication for OAC who undergo PCI-S in a 'real-world' setting.

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Background: Percutaneous coronary intervention (PCI) with drug-eluting stent (DES) implantation is a widely adopted strategy for the treatment of de novo coronary artery disease. DES implantation conveys an inherent risk for short- and long-term complications, including in-stent restenosis and stent thrombosis. Drug-coated balloons are emerging as an alternative approach to fulfill the "leaving nothing behind" principle and avoid long-term DES-related complications.

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Background: Data on left main (LM) percutaneous coronary interventions (PCI) have mostly been obtained in studies using drug-eluting stent (DES) platforms without dedicated large-vessel devices and with limited expansion capability.

Aims: Our study aimed to investigate the safety and efficacy of LM PCI with the latest-generation Resolute Onyx DES.

Methods: ROLEX (Revascularization Of LEft main with resolute onyX) is a prospective, multicentre study (ClinicalTrials.

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Transcatheter aortic valve intervention (TAVI) was introduced in early 2000 to offer treatment to inoperable patients with severe aortic valve stenosis. In a couple of decades, the procedure resulted effective and safe also in patients with intermediate to low risk for surgery; therefore, due to the progressive ageing of the population, the clinical need for TAVI is continuously increasing and is hardly met by the availability of the procedure, the so-called "TAVI capacity". As a result, many patients encounter difficulties in being referred to TAVI centers or face long waiting list times, thus risking severe adverse events (including death) before the procedure is performed.

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Article Synopsis
  • Transcatheter aortic valve implantation (TAVI) using the Navitor, a third-generation device, showed positive outcomes in patients with severe aortic stenosis between June and December 2021.
  • The study included 39 patients with an average age of 80, achieving device and procedural success in all, with a hospital stay averaging 6.6 days and only one needing a permanent pacemaker.
  • Follow-up results at one month indicated no cases of moderate or severe aortic regurgitation, suggesting the Navitor device has the potential to broaden TAVI applications and improve patient outcomes.
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Objectives: To investigate the safety and clinical efficacy of tirofiban during primary percutaneous coronary interventions (pPCI).

Background: Gp IIb/IIIa inhibitors (GPI) use during pPCI has declined over years, mainly for the increased hemorrhagic risk associated to their use and for the availability of potent, fast-acting oral antiplatelet drugs. However, several pharmacodynamic studies showed suboptimal platelet inhibition with P2Y12-blockers, such as prasugrel or ticagrelor.

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Background: Culprit lesions of ST-segment elevation myocardial infarction (STEMI) patients are friable, soft, and prone to disruption during primary percutaneous coronary intervention (pPCI). The presence of dissections in reference vessel segments (RVSs), adjacent to stented culprit lesions, and dynamic luminal changes in proximal or distal RVSs have not yet been investigated. We therefore sought to assess the healing patterns of edge dissections and the changes of lumen area at RVSs within 1 week post stent implantation in patients with STEMI.

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Objectives: Several randomized controlled trials (RCTs) consistently reported better clinical outcomes with radial as compared to femoral access for primary percutaneous coronary intervention (PCI). Nevertheless, heterogeneous use of potent antiplatelet drugs, such as Gp IIb/IIIa inhibitors (GPI), across different studies could have biased the results in favor of radial access. We performed an updated meta-analysis and meta-regression of RCTs in order to appraise whether the use of GPI had an impact on pooled estimates of clinical outcomes according to vascular access.

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Article Synopsis
  • The DUBIUS study investigates the timing of administering P2Y12 inhibitors in patients with non-ST elevation acute coronary syndrome, comparing pretreatment with ticagrelor versus a downstream approach with either prasugrel or ticagrelor post-coronary anatomy assessment.
  • The study will enroll 2,520 patients and test two main hypotheses: that the downstream strategy is better than pretreatment and that downstream ticagrelor is comparable to downstream prasugrel, focusing on safety and efficacy outcomes.
  • Results from the DUBIUS study will clarify the benefits and risks of different treatment strategies for managing acute coronary syndrome, potentially influencing clinical practice guidelines.
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  • The study aimed to examine how well stents expand after being inserted in patients with ST-segment elevation myocardial infarction (STEMI) and how this relates to their health outcomes.
  • A total of 151 patients were analyzed, dividing them into two groups: those with under-expanded stents (less than 90%) and those with well-expanded stents (90% or more).
  • Results showed low rates of major adverse cardiovascular events (MACE) at both 30 days and one year, indicating that even though well-expanded stents had a higher thrombus burden, they did not lead to worse clinical outcomes in STEMI patients compared to traditionally understood criteria in stable patients.
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  • The study aimed to compare two strategies for administering oral P2Y inhibitors in patients with non-ST-segment elevation acute coronary syndrome undergoing invasive treatment: pre-treatment (upstream) versus administering the drugs after angiography (downstream).
  • It involved 1,449 patients and was halted due to a pre-specified rule indicating futility, as there was no significant difference in major health events between the two groups.
  • Both strategies resulted in low rates of ischemic and bleeding complications, with only a minimal numerical difference in event rates, suggesting that the timing of P2Y inhibitor administration may not greatly impact patient outcomes.
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