Publications by authors named "Vasileios Panoulas"

Aims: Transcatheter aortic valve implantation (TAVI) is an alternative to surgical aortic valve replacement for patients with aortic valve stenosis. The choice between TAVI, surgery, or a conservative approach should be based upon multiple factors including clinical considerations, technical feasibility, and informed patient preference. In this context, engaging patients in a shared decision-making (SDM) process becomes essential, but this practice is generally underused.

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Article Synopsis
  • This study examines how age influences the effectiveness of microaxial flow pump (mAFP) treatment for patients suffering from ST-elevation myocardial infarction (STEMI) and cardiogenic shock (CS), using data from the DanGer Shock trial involving 355 participants.
  • Findings reveal that mortality rates significantly increase with age, from 31% in the youngest group to 73% in the oldest, showing younger patients (<77 years) benefit more from mAFP treatment (lower mortality), while older patients (≥77 years) do not have the same advantage.
  • The study also notes that complications were more common in the mAFP group, but overall, age significantly impacted survival outcomes, highlighting
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Importance: Mechanical circulatory support with a microaxial flow pump (MAFP) has been shown to improve survival in ST-elevation myocardial infarction-induced cardiogenic shock (STEMI-CS). Understanding the impact on hemodynamic stability over time is crucial for optimizing patient treatment.

Objective: To determine if an MAFP reduces the need for pharmacological circulatory support without compromising hemodynamics compared with standard care in STEMI-CS.

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Introduction: The BE-ALIVE score is an additive scoring system for estimating 30-day mortality in patients presenting with an acute coronary syndrome (ACS) [1]. However, it had only previously been tested on an internal validation cohort. The aim was to assess the scoring system on an external validation cohort.

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  • - The study compares the outcomes of different balloon-expandable (BE) transcatheter heart valve (THV) devices used to treat high-risk patients with severe pure native aortic valve regurgitation (NAVR), revealing suboptimal results with both device types.
  • - Out of 144 patients treated, those with the MyVal device had more frequent extra-large annuli, yet technical success rates were similar between MyVal (90%) and Sapien (81%).
  • - Overall, while BE devices might offer a treatment option for high-risk patients with NAVR, their effectiveness is limited and highlights the need for dedicated devices, as larger sizes might improve outcomes for traditionally unsuitable patients.
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Background: Severe pure aortic regurgitation (AR) carries a high mortality and morbidity risk, and it is often undertreated because of the inherent surgical risk. Transcatheter heart valves (THVs) have been used off-label in this setting with overall suboptimal results. The dedicated "purpose-built" Jena Valve Trilogy (JVT, JenaValve Technology) showed an encouraging performance, although it has never been compared to other THVs.

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Background: Cardiac troponin is commonly raised in patients presenting with malignancy. The prognostic significance of raised troponin in these patients is unclear.

Objectives: We sought to investigate the relation between troponin and mortality in a large, well characterised cohort of patients with a routinely measured troponin and a primary diagnosis of malignancy.

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Background: The use of mechanical circulatory support (MCS) has markedly increased over the last decade, so have the inter-hospital transfers, with the aim of being able to offer advanced heart failure (AHF) therapies and centralizing patients to tertiary centres.

Case Summary: In this article, we present the first in Europe long-distance air transfer of a patient supported by veno-arterial extracorporeal membrane oxygenator and Impella (ECPELLA), as a bridge to successful heart transplant. In our case report, a foreign young patient with AHF due to familiar cardiomyopathy required multiple MCS devices to achieve cardiovascular stability.

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Background: We evaluated the potential benefits of renin-angiotensin-aldosterone system inhibitors (RAASi) in patients with left ventricular assist device support.

Methods And Results: A total of 165 consecutive patients undergoing left ventricular assist device implant and alive at 6-month on support were studied. RAASi status after 6-month visit along with clinical reasons for nonprescription/uptitration were retrospectively assessed.

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Background: Primary percutaneous coronary intervention (pPCI) has improved clinical outcomes in patients with ST-segment-elevation myocardial infarction. However, as many as 50% of patients still have suboptimal myocardial reperfusion and experience extensive myocardial necrosis. The PiCSO-AMI-I trial (Pressure-Controlled Intermittent Coronary Sinus Occlusion-Acute Myocardial Infarction-I) evaluated whether PiCSO therapy can further reduce myocardial infarct size (IS) in patients undergoing pPCI.

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Patients with severe aortic stenosis (AoS) often present with acute heart failure and compensation, frequently leading to cardiogenic shock. Transcatheter Aortic Valve Replacement (TAVR) has been recently performed as a bailout treatment in such patients. The aim of our meta-analysis is to compare urgent TAVR with elective procedures.

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Article Synopsis
  • A study examined the impact of using a microaxial flow pump alongside standard care for patients with STEMI and cardiogenic shock, focusing on mortality and safety outcomes.
  • In a trial with 360 patients, those using the pump had a lower death rate (45.8%) compared to those receiving only standard care (58.5%).
  • However, the pump group experienced a higher rate of adverse events (24.0% vs. 6.2%) and significantly more patients required renal-replacement therapy (41.9% vs. 26.7%).
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Introduction: Percutaneous coronary intervention for complex coronary disease is associated with a high risk of cardiogenic shock. This can cause harm and limit the quality of revascularization achieved, especially when left ventricular function is impaired at the outset. Elective percutaneous left ventricular unloading is increasingly used to mitigate adverse events in patients undergoing high-risk percutaneous coronary intervention, but this strategy has fiscal and clinical costs and is not supported by robust evidence.

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Revascularization completeness after percutaneous coronary intervention (PCI) is associated with improved long-term outcomes. Mechanical circulatory support [intra-aortic balloon pump (IABP) or Impella] is used during high-risk PCI (HR-PCI) to enhance peri-procedural safety and achieve more complete revascularization. The relationship between revascularization completeness [post-PCI residual SYNTAX Score (rSS)] and left ventricular ejection fraction (LVEF) in HR-PCI has not been established.

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Background: Impella™ is increasingly used in cardiogenic shock. However, thromboembolic and bleeding events are frequent during percutaneous mechanical circulatory support (pMCS).

Objective: Therefore, we aimed to explore the optimal anticoagulation regime for pMCS to prevent thromboembolism and bleedings.

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Cardiogenic shock (CS) is a complex clinical syndrome with a high risk of mortality. The recent, rapid development of temporary mechanical circulatory support (tMCS) has altered CS treatment. While catecholamines remain the cornerstone of CS therapy, tMCS usage has increased.

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A growing body of evidence indicates that the benefits of temporary mechanical circulatory support (tMCS) in patients with cardiogenic shock (CS) is dependent on its aetiology and timing of implantation. As such, appropriate diagnosis, screening, selection, and treatment is crucial to achieving good outcomes with tMCS. Here, the latest guidance on CS phenotypes and diagnostics for correctly identifying tMCS candidates is discussed.

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Introduction: The optimal revascularization strategy in patients with heart failure with reduced ejection fraction (HFrEF) remains to be elucidated. The aim of this paper is to compare the mid-term mortality rate among patients with severely reduced ejection fraction (EF) and complex coronary artery disease who underwent coronary artery bypass grafting (CABG), percutaneous coronary intervention (PCI) with Impella support, or without.

Methods: Randomized control trials and propensity-adjusted observational studies including patients with ischemic cardiomyopathy (ICM) and severe EF reduction undergoing revascularization were selected.

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Introduction: Severe aortic stenosis is a major cause of morbidity and mortality. The existing treatment pathway for transcatheter aortic valve implantation (TAVI) traditionally relies on tertiary Heart Valve Centre workup. However, this has been associated with delays to treatment, in breach of British Cardiovascular Intervention Society targets.

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Article Synopsis
  • Transcatheter aortic valve replacement (TAVR) for severe native aortic valve regurgitation has shown suboptimal outcomes, particularly with older valve technologies; this study evaluates newer devices.
  • The PANTHEON study analyzed 201 patients who received TAVR with both self-expanding and balloon-expandable valves, focusing on success rates and health outcomes after one year.
  • Results revealed that while technical success was high, issues like transcatheter valve embolization occurred in a significant number of cases, indicating that TAVR still poses challenges despite advancements in valve technology.
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Aim: To create and validate a simple scoring system for predicting 30-day mortality in patients presenting with acute coronary syndromes (ACS) at their moment of admission.

Methods And Results: 2407 consecutive patients presenting to Harefield Hospital with measured arterial blood gases, from January 2011 to December 2020, were studied to build the training set. 30-day mortality in this group was 17.

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