497 results match your criteria: "Oxford Heart Centre[Affiliation]"

High cardiac sympathetic drive and release of the sympathetic cotransmitter neuropeptide Y (NPY) are significant features of congestive heart failure (CHF), in which resting venous NPY levels are known to be associated with mortality. However, whether circulating NPY levels increase during exercise in CHF when they are already elevated is controversial. We sought to establish the dynamics of circulating NPY levels in CHF patients treated with contemporary medical therapy and devices in relationship to indices of performance linked to long-term prognosis.

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Background: Permanent pacemaker (PPM) implantation is a commonly performed procedure. Patients increasingly use the Internet for information on medical interventions. We aimed to assess the quality of videos discussing PPM implantation on YouTube for patient consumption.

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Objective: The risk of aortic dissection is increased in Turner Syndrome (TS). Aortic dilation is thought to contribute to this risk and may be managed with elective aortic surgery. New TS guidance has lowered the aortic size thresholds for consideration of aortic surgery.

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In patients undergoing transcatheter aortic valve implantation (TAVI), multi-valve disease is common and associated with worse outcomes. Despite multiple emerging transcatheter valve treatment options, no guidelines exist for the transcatheter treatment of multi-valve disease. We present a case of a 76-year-old patient with concomitant severe aortic valve stenosis and severe mitral valve stenosis who underwent concurrent TAVI and transcatheter mitral valve replacement.

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Objectives: Thoracic aortic aneurysms and dissections provide a complex surgical cohort termed thoracic aortic surgery. Regular follow-up at specialist clinics with cross-sectional imaging is recommended. Identifying risk factors that lead to re-operations as well as the requirement for and appropriate length of follow-up remain points of debate.

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Background: Baseline right bundle branch block (RBBB) is an established predictor of permanent pacemaker (PPM) requirement after transcatheter aortic valve replacement (TAVR). There are limited data to support prophylactic PPM implantation in advance of TAVR. We aimed to evaluate the efficacy and safety of prophylactic PPM implantation in patients with RBBB prior to TAVR, and to identify the predictors of pacing dependence after TAVR.

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Article Synopsis
  • The study explores the assessment of coronary microvascular dysfunction (CMD) using a new hybrid index derived from pressure-wire measurements and angiography, promoting its potential use in clinical settings.
  • Researchers compared this hybrid index, known as IMR, with a traditional bolus thermodilution-based index in a cohort of patients with acute coronary syndrome and stable coronary artery disease.
  • Results indicate that both the new hybrid IMR and the traditional index showed strong correlations and diagnostic accuracy for CMD, suggesting IMR is a simpler and effective alternative for routine clinical use.
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Transcatheter Valve Repair for Tricuspid Regurgitation: 1-Year Results From a Large European Real-World Registry.

J Am Coll Cardiol

January 2025

Medizinische Klinik und Poliklinik I, LMU Klinikum, LMU München, Munich, Germany; German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, Munich, Germany. Electronic address:

Background: Tricuspid valve transcatheter edge-to-edge repair has emerged as a valuable treatment option for patients with severe tricuspid regurgitation (TR).

Objectives: This study aims to investigate the safety and effectiveness of the PASCAL transcatheter valve repair system in treating severe TR in a real-world patient population.

Methods: The PASTE (PASCAL for Tricuspid Regurgitation-a European registry) study is an investigator-initiated, multicenter, retrospective, and prospective observational cohort analysis conducted across 16 European heart valve centers including consecutive patients treated with the PASCAL transcatheter valve repair system from February 2019 to November 2023.

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Article Synopsis
  • * Using the COM-B model, researchers analyzed qualitative data from 117 participants and identified four key themes: the desire for behavior change, the use of exercise and psychological strategies, the importance of support networks, and regaining control after a cardiac event.
  • * Most participants wanted personalized weight loss support but encountered difficulties due to interconnected psychological, social, cultural, and financial factors, suggesting that tailored programs could enhance their weight management success.
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Background: Rheumatic fever is a non-suppurative, inflammatory sequela of group A Streptococcus pharyngitis that can occur at two to four weeks after infection. Following an episode of rheumatic fever, there is a risk of developing rheumatic heart disease (RHD) later in life that carries significant risk of morbidity and mortality. RHD remains the largest global cause of cardiovascular disease in the young (age < 25 years).

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Article Synopsis
  • Prolonged intramuscular injections of benzathine penicillin G (BPG) are essential for preventing group A streptococcal infections and reducing the risk of rheumatic fever and heart disease, but the pain from these injections may reduce patient compliance.
  • * This systematic review and meta-analysis aimed to evaluate the effectiveness of local anaesthetics in reducing pain associated with BPG injections by analyzing randomised controlled trials comparing BPG alone to BPG with anaesthetics.
  • * Out of 3958 records, eight trials with 489 patients were included, revealing that while patients reported high levels of immediate pain, some still experienced low-intensity pain 24 hours later.
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Article Synopsis
  • Complete revascularization is the standard treatment for older STEMI patients with multivessel disease, offering benefits shown in the FIRE trial, though long-term effects remain uncertain.
  • A meta-analysis of several randomized clinical trials analyzed data from 1733 patients aged 75 and older, comparing complete versus culprit-only revascularization strategies.
  • Results indicated that complete revascularization significantly reduced the risk of cardiovascular death or myocardial infarction in the long term, but did not show a difference in overall death rates compared to culprit-only revascularization.
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Article Synopsis
  • Catheter ablation (PVI) is an effective treatment for atrial fibrillation (AF), but it has a relapse rate of 15-50%, especially in hypertensive patients.
  • This meta-analysis included 637 patients from 8 trials, showing that adding renal denervation (RDN) to PVI significantly reduces AF recurrence and lowers blood pressure.
  • The combination of RDN and PVI does not negatively impact kidney function, suggesting RDN is a valuable adjunctive treatment for AF in patients with resistant hypertension.
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Article Synopsis
  • A new method called intracoronary continuous thermodilution is being studied to measure coronary blood flow (Q) and resistance (R) without needing special tools like pressure wires or microcatheters, using standard coronary angiograms.
  • The validation of this technique was conducted on a group of 62 patients across two medical centers, comparing flow and resistance measurements during rest and increased blood flow (hyperemia).
  • The study found strong correlations between the traditional and angiography-derived measurements for both flow and resistance, suggesting the new method is reliable for assessing coronary function.
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Optical Coherence Tomography Measures Predicting Fractional Flow Reserve: The OMEF Study.

J Soc Cardiovasc Angiogr Interv

April 2024

Department of Cardiovascular Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica Sacro Cuore, Rome, Italy.

Background: Optical coherence tomography (OCT) allows to carefully characterize coronary plaque morphology and lumen dimensions. We sought to evaluate the value of OCT in predicting fractional flow reserve (FFR).

Methods: We performed a multicenter, international, pooled analysis of individual patient-level data from published studies assessing FFR and OCT on the same vessel.

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Article Synopsis
  • - The main objective of this Cochrane Review protocol is to evaluate how alcohol consumption influences the progression to symptomatic heart failure in individuals who are at risk or have pre-heart failure stages.
  • - The review also aims to examine the impact of alcohol on the deterioration of left ventricular function in those with early stages of heart failure.
  • - Furthermore, the study will investigate the relationship between alcohol consumption and different types of heart failure (e.g., reduced and preserved ejection fraction) over various timeframes.
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Background: Fractional flow reserve (FFR) represents the gold standard in guiding the decision to proceed or not with coronary revascularization of angiographically intermediate coronary lesion (AICL). Optical coherence tomography (OCT) allows to carefully characterize coronary plaque morphology and lumen dimensions.

Objectives: We sought to develop machine learning (ML) models based on clinical, angiographic and OCT variables for predicting FFR.

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Transthoracic echocardiography (TTE) is the most commonly used imaging modality to diagnose left ventricular thrombus (LVT), however, cardiac magnetic resonance (CMR) remains the gold standard investigation. A comparison of the diagnostic performance between two modalities is needed to inform guidelines on a diagnostic approach towards LVT. We performed a systematic review and meta-analysis to investigate the diagnostic performance of three methods of TTE (non-contrast, contrast, and apical wall motion scoring) for the detection of LVT compared to CMR as a reference test.

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DCCAT: Dual-Coordinate Cross-Attention Transformer for thrombus segmentation on coronary OCT.

Med Image Anal

October 2024

Biomedical Instrument Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China; Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, UK. Electronic address:

Acute coronary syndromes (ACS) are one of the leading causes of mortality worldwide, with atherosclerotic plaque rupture and subsequent thrombus formation as the main underlying substrate. Thrombus burden evaluation is important for tailoring treatment therapy and predicting prognosis. Coronary optical coherence tomography (OCT) enables in-vivo visualization of thrombus that cannot otherwise be achieved by other image modalities.

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Patients with acutely decompensated heart failure (ADHF) are usually admitted to hospital for management. There is growing interest in delivering intravenous (IV) diuretic therapy at home, in the community or at hospital day-care units; the safety and effectiveness of outpatient-based management (OPM) for ADHF has not been established. We conducted a systematic literature review and meta-analysis to investigate the short-term safety and effectiveness of OPM compared with inpatient management (IPM) of ADHF.

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Revascularization Strategies in Patients With MI and MVD: Have We Got the Answers?

J Am Coll Cardiol

July 2024

Oxford Heart Centre, John Radcliffe Hospital, Oxford University Hospitals, Oxford, United Kingdom; NIHR Oxford Biomedical Research Centre, Oxford, United Kingdom. Electronic address:

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A Clinical Diagnostic Test for Calcium Release Deficiency Syndrome.

JAMA

July 2024

Section of Cardiac Electrophysiology, Division of Cardiology, Department of Medicine, Hamilton Health Sciences and McMaster University, Hamilton, Ontario, Canada.

Article Synopsis
  • - The text discusses Calcium Release Deficiency Syndrome (CRDS), a serious genetic heart condition that can cause sudden cardiac arrest without clear reasons and is not detectable through standard tests.
  • - The study aimed to analyze electrocardiogram (ECG) responses after brief periods of fast heart rates followed by pauses in order to develop a diagnostic test for CRDS.
  • - Findings showed that patients with CRDS had a significantly greater change in T-wave amplitude on their ECG after a pause compared to control groups, indicating a potential diagnostic marker for this syndrome.
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Primary percutaneous coronary intervention (pPCI) has revolutionized the prognosis of ST-segment elevation myocardial infarction (STEMI) and is the gold standard treatment. As a result of its success, the number of pPCI centres has expanded worldwide. Despite decades of advancements, clinical outcomes in STEMI patients have plateaued.

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